--- _id: '767' abstract: - lang: eng text: Synchronous distributed algorithms are easier to design and prove correct than algorithms that tolerate asynchrony. Yet, in the real world, networks experience asynchrony and other timing anomalies. In this paper, we address the question of how to efficiently transform an algorithm that relies on synchronous timing into an algorithm that tolerates asynchronous executions. We introduce a transformation technique from synchronous algorithms to indulgent algorithms (Guerraoui, in PODC, pp. 289-297, 2000), which induces only a constant overhead in terms of time complexity in well-behaved executions. Our technique is based on a new abstraction we call an asynchrony detector, which the participating processes implement collectively. The resulting transformation works for the class of colorless distributed tasks, including consensus and set agreement. Interestingly, we also show that our technique is relevant for colored tasks, by applying it to the renaming problem, to obtain the first indulgent renaming algorithm. acknowledgement: "Dan Alistarh was supported by the NCCR MICS Project. Corentin Travers had additional support from INRIA team REGAL and ANR project SPREADS.\r\nThe authors would like to thank Hagit Attiya and Nikola Kneževi\r\n ́\r\nc for their feed-\r\nback on previous drafts of this paper, and the anonymous reviewers for their useful comments." article_processing_charge: No author: - first_name: Dan-Adrian full_name: Alistarh, Dan-Adrian id: 4A899BFC-F248-11E8-B48F-1D18A9856A87 last_name: Alistarh orcid: 0000-0003-3650-940X - first_name: Seth full_name: Gilbert, Seth last_name: Gilbert - first_name: Rachid full_name: Guerraoui, Rachid last_name: Guerraoui - first_name: Corentin full_name: Travers, Corentin last_name: Travers citation: ama: Alistarh D-A, Gilbert S, Guerraoui R, Travers C. Generating Fast Indulgent Algorithms. Theory of Computing Systems. 2012;51(4):404-424. doi:10.1007/s00224-012-9407-2 apa: Alistarh, D.-A., Gilbert, S., Guerraoui, R., & Travers, C. (2012). Generating Fast Indulgent Algorithms. Theory of Computing Systems. Elsevier. https://doi.org/10.1007/s00224-012-9407-2 chicago: Alistarh, Dan-Adrian, Seth Gilbert, Rachid Guerraoui, and Corentin Travers. “Generating Fast Indulgent Algorithms.” Theory of Computing Systems. Elsevier, 2012. https://doi.org/10.1007/s00224-012-9407-2. ieee: D.-A. Alistarh, S. Gilbert, R. Guerraoui, and C. Travers, “Generating Fast Indulgent Algorithms,” Theory of Computing Systems, vol. 51, no. 4. Elsevier, pp. 404–424, 2012. ista: Alistarh D-A, Gilbert S, Guerraoui R, Travers C. 2012. Generating Fast Indulgent Algorithms. Theory of Computing Systems. 51(4), 404–424. mla: Alistarh, Dan-Adrian, et al. “Generating Fast Indulgent Algorithms.” Theory of Computing Systems, vol. 51, no. 4, Elsevier, 2012, pp. 404–24, doi:10.1007/s00224-012-9407-2. short: D.-A. Alistarh, S. Gilbert, R. Guerraoui, C. Travers, Theory of Computing Systems 51 (2012) 404–424. date_created: 2018-12-11T11:48:23Z date_published: 2012-01-01T00:00:00Z date_updated: 2023-02-23T13:13:40Z day: '01' doi: 10.1007/s00224-012-9407-2 extern: '1' intvolume: ' 51' issue: '4' language: - iso: eng month: '01' oa_version: None page: 404 - 424 publication: Theory of Computing Systems publication_status: published publisher: Elsevier publist_id: '6891' status: public title: Generating Fast Indulgent Algorithms type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 51 year: '2012' ... --- _id: '7749' abstract: - lang: eng text: Although studies on laboratory species and natural populations of vertebrates have shown reproduction to impair later performance, little is known of the age‐specific associations between reproduction and survival, and how such findings apply to the ageing of large, long‐lived species. Herein we develop a framework to examine population‐level patterns of reproduction and survival across lifespan in long‐lived organisms, and decompose those changes into individual‐level effects, and the effects of age‐specific trade‐offs between fitness components. We apply this to an extensive longitudinal dataset on female semi‐captive Asian timber elephants (Elephas maximus) and report the first evidence of age‐specific fitness declines that are driven by age‐specific associations between fitness components in a long‐lived mammal. Associations between reproduction and survival are positive in early life, but negative in later life with up to 71% of later‐life survival declines associated with investing in the production of offspring within this population of this critically endangered species. article_processing_charge: No article_type: original author: - first_name: Matthew Richard full_name: Robinson, Matthew Richard id: E5D42276-F5DA-11E9-8E24-6303E6697425 last_name: Robinson orcid: 0000-0001-8982-8813 - first_name: Khyne U full_name: Mar, Khyne U last_name: Mar - first_name: Virpi full_name: Lummaa, Virpi last_name: Lummaa citation: ama: Robinson MR, Mar KU, Lummaa V. Senescence and age-specific trade-offs between reproduction and survival in female Asian elephants. Ecology Letters. 2012;15(3):260-266. doi:10.1111/j.1461-0248.2011.01735.x apa: Robinson, M. R., Mar, K. U., & Lummaa, V. (2012). Senescence and age-specific trade-offs between reproduction and survival in female Asian elephants. Ecology Letters. Wiley. https://doi.org/10.1111/j.1461-0248.2011.01735.x chicago: Robinson, Matthew Richard, Khyne U Mar, and Virpi Lummaa. “Senescence and Age-Specific Trade-Offs between Reproduction and Survival in Female Asian Elephants.” Ecology Letters. Wiley, 2012. https://doi.org/10.1111/j.1461-0248.2011.01735.x. ieee: M. R. Robinson, K. U. Mar, and V. Lummaa, “Senescence and age-specific trade-offs between reproduction and survival in female Asian elephants,” Ecology Letters, vol. 15, no. 3. Wiley, pp. 260–266, 2012. ista: Robinson MR, Mar KU, Lummaa V. 2012. Senescence and age-specific trade-offs between reproduction and survival in female Asian elephants. Ecology Letters. 15(3), 260–266. mla: Robinson, Matthew Richard, et al. “Senescence and Age-Specific Trade-Offs between Reproduction and Survival in Female Asian Elephants.” Ecology Letters, vol. 15, no. 3, Wiley, 2012, pp. 260–66, doi:10.1111/j.1461-0248.2011.01735.x. short: M.R. Robinson, K.U. Mar, V. Lummaa, Ecology Letters 15 (2012) 260–266. date_created: 2020-04-30T11:01:26Z date_published: 2012-03-01T00:00:00Z date_updated: 2021-01-12T08:15:16Z day: '01' doi: 10.1111/j.1461-0248.2011.01735.x extern: '1' intvolume: ' 15' issue: '3' language: - iso: eng month: '03' oa_version: None page: 260-266 publication: Ecology Letters publication_identifier: issn: - 1461-023X publication_status: published publisher: Wiley quality_controlled: '1' status: public title: Senescence and age-specific trade-offs between reproduction and survival in female Asian elephants type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 15 year: '2012' ... --- _id: '7748' abstract: - lang: eng text: Female mate choice acts as an important evolutionary force, yet the influence of the environment on both its expression and the selective pressures acting upon it remains unknown. We found consistent heritable differences between females in their choice of mate based on ornament size during a 25‐year study of a population of collared flycatchers. However, the fitness consequences of mate choice were dependent on environmental conditions experienced whilst breeding. Females breeding with highly ornamented males experienced high relative fitness during dry summer conditions, but low relative fitness during wetter years. Our results imply that sexual selection within a population can be highly variable and dependent upon the prevailing weather conditions experienced by individuals. article_processing_charge: No article_type: original author: - first_name: Matthew Richard full_name: Robinson, Matthew Richard id: E5D42276-F5DA-11E9-8E24-6303E6697425 last_name: Robinson orcid: 0000-0001-8982-8813 - first_name: G. full_name: Sander van Doorn, G. last_name: Sander van Doorn - first_name: Lars full_name: Gustafsson, Lars last_name: Gustafsson - first_name: Anna full_name: Qvarnström, Anna last_name: Qvarnström citation: ama: Robinson MR, Sander van Doorn G, Gustafsson L, Qvarnström A. Environment-dependent selection on mate choice in a natural population of birds. Ecology Letters. 2012;15(6):611-618. doi:10.1111/j.1461-0248.2012.01780.x apa: Robinson, M. R., Sander van Doorn, G., Gustafsson, L., & Qvarnström, A. (2012). Environment-dependent selection on mate choice in a natural population of birds. Ecology Letters. Wiley. https://doi.org/10.1111/j.1461-0248.2012.01780.x chicago: Robinson, Matthew Richard, G. Sander van Doorn, Lars Gustafsson, and Anna Qvarnström. “Environment-Dependent Selection on Mate Choice in a Natural Population of Birds.” Ecology Letters. Wiley, 2012. https://doi.org/10.1111/j.1461-0248.2012.01780.x. ieee: M. R. Robinson, G. Sander van Doorn, L. Gustafsson, and A. Qvarnström, “Environment-dependent selection on mate choice in a natural population of birds,” Ecology Letters, vol. 15, no. 6. Wiley, pp. 611–618, 2012. ista: Robinson MR, Sander van Doorn G, Gustafsson L, Qvarnström A. 2012. Environment-dependent selection on mate choice in a natural population of birds. Ecology Letters. 15(6), 611–618. mla: Robinson, Matthew Richard, et al. “Environment-Dependent Selection on Mate Choice in a Natural Population of Birds.” Ecology Letters, vol. 15, no. 6, Wiley, 2012, pp. 611–18, doi:10.1111/j.1461-0248.2012.01780.x. short: M.R. Robinson, G. Sander van Doorn, L. Gustafsson, A. Qvarnström, Ecology Letters 15 (2012) 611–618. date_created: 2020-04-30T11:01:07Z date_published: 2012-06-01T00:00:00Z date_updated: 2021-01-12T08:15:15Z day: '01' doi: 10.1111/j.1461-0248.2012.01780.x extern: '1' intvolume: ' 15' issue: '6' language: - iso: eng month: '06' oa_version: None page: 611-618 publication: Ecology Letters publication_identifier: issn: - 1461-023X publication_status: published publisher: Wiley quality_controlled: '1' status: public title: Environment-dependent selection on mate choice in a natural population of birds type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 15 year: '2012' ... --- _id: '7776' abstract: - lang: eng text: We present an analysis of finite-size effects in jammed packings of N soft, frictionless spheres at zero temperature. There is a 1/N correction to the discrete jump in the contact number at the transition so that jammed packings exist only above isostaticity. As a result, the canonical power-law scalings of the contact number and elastic moduli break down at low pressure. These quantities exhibit scaling collapse with a nontrivial scaling function, demonstrating that the jamming transition can be considered a phase transition. Scaling is achieved as a function of N in both two and three dimensions, indicating an upper critical dimension of 2. article_number: '095704' article_processing_charge: No article_type: original author: - first_name: Carl Peter full_name: Goodrich, Carl Peter id: EB352CD2-F68A-11E9-89C5-A432E6697425 last_name: Goodrich orcid: 0000-0002-1307-5074 - first_name: Andrea J. full_name: Liu, Andrea J. last_name: Liu - first_name: Sidney R. full_name: Nagel, Sidney R. last_name: Nagel citation: ama: Goodrich CP, Liu AJ, Nagel SR. Finite-size scaling at the jamming transition. Physical Review Letters. 2012;109(9). doi:10.1103/physrevlett.109.095704 apa: Goodrich, C. P., Liu, A. J., & Nagel, S. R. (2012). Finite-size scaling at the jamming transition. Physical Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.109.095704 chicago: Goodrich, Carl Peter, Andrea J. Liu, and Sidney R. Nagel. “Finite-Size Scaling at the Jamming Transition.” Physical Review Letters. American Physical Society, 2012. https://doi.org/10.1103/physrevlett.109.095704. ieee: C. P. Goodrich, A. J. Liu, and S. R. Nagel, “Finite-size scaling at the jamming transition,” Physical Review Letters, vol. 109, no. 9. American Physical Society, 2012. ista: Goodrich CP, Liu AJ, Nagel SR. 2012. Finite-size scaling at the jamming transition. Physical Review Letters. 109(9), 095704. mla: Goodrich, Carl Peter, et al. “Finite-Size Scaling at the Jamming Transition.” Physical Review Letters, vol. 109, no. 9, 095704, American Physical Society, 2012, doi:10.1103/physrevlett.109.095704. short: C.P. Goodrich, A.J. Liu, S.R. Nagel, Physical Review Letters 109 (2012). date_created: 2020-04-30T11:44:12Z date_published: 2012-08-27T00:00:00Z date_updated: 2021-01-12T08:15:27Z day: '27' doi: 10.1103/physrevlett.109.095704 extern: '1' intvolume: ' 109' issue: '9' language: - iso: eng month: '08' oa_version: None publication: Physical Review Letters publication_identifier: issn: - 0031-9007 - 1079-7114 publication_status: published publisher: American Physical Society quality_controlled: '1' status: public title: Finite-size scaling at the jamming transition type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 109 year: '2012' ... --- _id: '801' abstract: - lang: eng text: Fungal cell walls frequently contain a polymer of mannose and galactose called galactomannan. In the pathogenic filamentous fungus Aspergillus fumigatus, this polysaccharide is made of a linear mannan backbone with side chains of galactofuran and is anchored to the plasma membrane via a glycosylphosphatidylinositol or is covalently linked to the cell wall. To date, the biosynthesis and significance of this polysaccharide are unknown. The present data demonstrate that deletion of the Golgi UDP-galactofuranose transporter GlfB or the GDP-mannose transporter GmtA leads to the absence of galactofuran or galactomannan, respectively. This indicates that the biosynthesis of galactomannan probably occurs in the lumen of the Golgi apparatus and thus contrasts with the biosynthesis of other fungal cell wall polysaccharides studied to date that takes place at the plasma membrane. Transglycosylation of galactomannan from the membrane to the cell wall is hypothesized because both the cell wall-bound and membrane-bound polysaccharide forms are affected in the generated mutants. Considering the severe growth defect of the A. fumigatus GmtA-deficient mutant, proving this paradigm might provide new targets for antifungal therapy. acknowledgement: This work was supported by the Deutsche Forschungsgemeinschaft. article_processing_charge: No article_type: original author: - first_name: Jakob full_name: Engel, Jakob last_name: Engel - first_name: Philipp S full_name: Schmalhorst, Philipp S id: 309D50DA-F248-11E8-B48F-1D18A9856A87 last_name: Schmalhorst orcid: 0000-0002-5795-0133 - first_name: Françoise full_name: Routier, Françoise last_name: Routier citation: ama: Engel J, Schmalhorst PS, Routier F. Biosynthesis of the fungal cell wall polysaccharide galactomannan requires intraluminal GDP-mannose. Journal of Biological Chemistry. 2012;287(53):44418-44424. doi:10.1074/jbc.M112.398321 apa: Engel, J., Schmalhorst, P. S., & Routier, F. (2012). Biosynthesis of the fungal cell wall polysaccharide galactomannan requires intraluminal GDP-mannose. Journal of Biological Chemistry. American Society for Biochemistry and Molecular Biology. https://doi.org/10.1074/jbc.M112.398321 chicago: Engel, Jakob, Philipp S Schmalhorst, and Françoise Routier. “Biosynthesis of the Fungal Cell Wall Polysaccharide Galactomannan Requires Intraluminal GDP-Mannose.” Journal of Biological Chemistry. American Society for Biochemistry and Molecular Biology, 2012. https://doi.org/10.1074/jbc.M112.398321. ieee: J. Engel, P. S. Schmalhorst, and F. Routier, “Biosynthesis of the fungal cell wall polysaccharide galactomannan requires intraluminal GDP-mannose,” Journal of Biological Chemistry, vol. 287, no. 53. American Society for Biochemistry and Molecular Biology, pp. 44418–44424, 2012. ista: Engel J, Schmalhorst PS, Routier F. 2012. Biosynthesis of the fungal cell wall polysaccharide galactomannan requires intraluminal GDP-mannose. Journal of Biological Chemistry. 287(53), 44418–44424. mla: Engel, Jakob, et al. “Biosynthesis of the Fungal Cell Wall Polysaccharide Galactomannan Requires Intraluminal GDP-Mannose.” Journal of Biological Chemistry, vol. 287, no. 53, American Society for Biochemistry and Molecular Biology, 2012, pp. 44418–24, doi:10.1074/jbc.M112.398321. short: J. Engel, P.S. Schmalhorst, F. Routier, Journal of Biological Chemistry 287 (2012) 44418–44424. date_created: 2018-12-11T11:48:34Z date_published: 2012-12-28T00:00:00Z date_updated: 2022-03-21T07:57:14Z day: '28' doi: 10.1074/jbc.M112.398321 extern: '1' external_id: pmid: - '23139423' intvolume: ' 287' issue: '53' language: - iso: eng month: '12' oa_version: None page: 44418 - 44424 pmid: 1 publication: Journal of Biological Chemistry publication_status: published publisher: American Society for Biochemistry and Molecular Biology publist_id: '6852' quality_controlled: '1' scopus_import: '1' status: public title: Biosynthesis of the fungal cell wall polysaccharide galactomannan requires intraluminal GDP-mannose type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 287 year: '2012' ... --- _id: '8024' abstract: - lang: eng text: In dynamical models of cortical networks, the recurrent connectivity can amplify the input given to the network in two distinct ways. One is induced by the presence of near-critical eigenvalues in the connectivity matrix W, producing large but slow activity fluctuations along the corresponding eigenvectors (dynamical slowing). The other relies on W not being normal, which allows the network activity to make large but fast excursions along specific directions. Here we investigate the trade-off between non-normal amplification and dynamical slowing in the spontaneous activity of large random neuronal networks composed of excitatory and inhibitory neurons. We use a Schur decomposition of W to separate the two amplification mechanisms. Assuming linear stochastic dynamics, we derive an exact expression for the expected amount of purely non-normal amplification. We find that amplification is very limited if dynamical slowing must be kept weak. We conclude that, to achieve strong transient amplification with little slowing, the connectivity must be structured. We show that unidirectional connections between neurons of the same type together with reciprocal connections between neurons of different types, allow for amplification already in the fast dynamical regime. Finally, our results also shed light on the differences between balanced networks in which inhibition exactly cancels excitation and those where inhibition dominates. article_number: '011909' article_processing_charge: No article_type: original author: - first_name: Guillaume full_name: Hennequin, Guillaume last_name: Hennequin - first_name: Tim P full_name: Vogels, Tim P id: CB6FF8D2-008F-11EA-8E08-2637E6697425 last_name: Vogels orcid: 0000-0003-3295-6181 - first_name: Wulfram full_name: Gerstner, Wulfram last_name: Gerstner citation: ama: Hennequin G, Vogels TP, Gerstner W. Non-normal amplification in random balanced neuronal networks. Physical Review E. 2012;86(1). doi:10.1103/physreve.86.011909 apa: Hennequin, G., Vogels, T. P., & Gerstner, W. (2012). Non-normal amplification in random balanced neuronal networks. Physical Review E. American Physical Society. https://doi.org/10.1103/physreve.86.011909 chicago: Hennequin, Guillaume, Tim P Vogels, and Wulfram Gerstner. “Non-Normal Amplification in Random Balanced Neuronal Networks.” Physical Review E. American Physical Society, 2012. https://doi.org/10.1103/physreve.86.011909. ieee: G. Hennequin, T. P. Vogels, and W. Gerstner, “Non-normal amplification in random balanced neuronal networks,” Physical Review E, vol. 86, no. 1. American Physical Society, 2012. ista: Hennequin G, Vogels TP, Gerstner W. 2012. Non-normal amplification in random balanced neuronal networks. Physical Review E. 86(1), 011909. mla: Hennequin, Guillaume, et al. “Non-Normal Amplification in Random Balanced Neuronal Networks.” Physical Review E, vol. 86, no. 1, 011909, American Physical Society, 2012, doi:10.1103/physreve.86.011909. short: G. Hennequin, T.P. Vogels, W. Gerstner, Physical Review E 86 (2012). date_created: 2020-06-25T13:09:06Z date_published: 2012-06-11T00:00:00Z date_updated: 2021-01-12T08:16:35Z day: '11' doi: 10.1103/physreve.86.011909 extern: '1' external_id: pmid: - '23005454' intvolume: ' 86' issue: '1' language: - iso: eng month: '06' oa_version: None pmid: 1 publication: Physical Review E publication_identifier: eisbn: - 1550-2376 issn: - 1539-3755 publication_status: published publisher: American Physical Society quality_controlled: '1' status: public title: Non-normal amplification in random balanced neuronal networks type: journal_article user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425 volume: 86 year: '2012' ... --- _id: '808' abstract: - lang: eng text: Using correlated live-cell imaging and electron tomography we found that actin branch junctions in protruding and treadmilling lamellipodia are not concentrated at the front as previously supposed, but link actin filament subsets in which there is a continuum of distances from a junction to the filament plus ends, for up to at least 1 mm. When branch sites were observed closely spaced on the same filament their separation was commonly a multiple of the actin helical repeat of 36 nm. Image averaging of branch junctions in the tomograms yielded a model for the in vivo branch at 2.9 nm resolution, which was comparable with that derived for the in vitro actin- Arp2/3 complex. Lamellipodium initiation was monitored in an intracellular wound-healing model and was found to involve branching from the sides of actin filaments oriented parallel to the plasmalemma. Many filament plus ends, presumably capped, terminated behind the lamellipodium tip and localized on the dorsal and ventral surfaces of the actin network. These findings reveal how branching events initiate and maintain a network of actin filaments of variable length, and provide the first structural model of the branch junction in vivo. A possible role of filament capping in generating the lamellipodium leaflet is discussed and a mathematical model of protrusion is also presented. acknowledgement: This work was supported by the Austrian Science Fund [projects FWF I516-B09 and FWF P21292-B09 to J.V.S.]; the Vienna Science and Technology Fund [WWTF-grant numbers MA 09-004 to J.V.S. and C.S], ZIT - The Technology Agency of the City of Vienna [VSOE, CMCN to J.V.S. and G.P.R.]; the Deutsche Forschungsgemeinschaft [grant number RO 2414/1-2 to K.R.]; the Daiko research foundation [grant number 9134 to A.N.]; and a Grant-in-Aid for Scientific Research [S, grant number 20227008 to Y.M.] and a Grant-in-Aid for Young Scientists [B, grant number 22770145 to A.N.] (B) from The Ministry of Education, Culture, Sports, Science and Technology of the Japanese Government. Deposited in PMC for immediate release. We thank Tibor Kulcsar for assistance with graphics. author: - first_name: Marlene full_name: Vinzenz, Marlene last_name: Vinzenz - first_name: Maria full_name: Nemethova, Maria id: 34E27F1C-F248-11E8-B48F-1D18A9856A87 last_name: Nemethova - first_name: Florian full_name: Schur, Florian id: 48AD8942-F248-11E8-B48F-1D18A9856A87 last_name: Schur orcid: 0000-0003-4790-8078 - first_name: Jan full_name: Mueller, Jan last_name: Mueller - first_name: Akihiro full_name: Narita, Akihiro last_name: Narita - first_name: Edit full_name: Urban, Edit last_name: Urban - first_name: Christoph full_name: Winkler, Christoph last_name: Winkler - first_name: Christian full_name: Schmeiser, Christian last_name: Schmeiser - first_name: Stefan full_name: Koestler, Stefan last_name: Koestler - first_name: Klemens full_name: Rottner, Klemens last_name: Rottner - first_name: Guenter full_name: Resch, Guenter last_name: Resch - first_name: Yuichiro full_name: Maéda, Yuichiro last_name: Maéda - first_name: John full_name: Small, John last_name: Small citation: ama: Vinzenz M, Nemethova M, Schur FK, et al. Actin branching in the initiation and maintenance of lamellipodia. Journal of Cell Science. 2012;125(11):2775-2785. doi:10.1242/jcs.107623 apa: Vinzenz, M., Nemethova, M., Schur, F. K., Mueller, J., Narita, A., Urban, E., … Small, J. (2012). Actin branching in the initiation and maintenance of lamellipodia. Journal of Cell Science. Company of Biologists. https://doi.org/10.1242/jcs.107623 chicago: Vinzenz, Marlene, Maria Nemethova, Florian KM Schur, Jan Mueller, Akihiro Narita, Edit Urban, Christoph Winkler, et al. “Actin Branching in the Initiation and Maintenance of Lamellipodia.” Journal of Cell Science. Company of Biologists, 2012. https://doi.org/10.1242/jcs.107623. ieee: M. Vinzenz et al., “Actin branching in the initiation and maintenance of lamellipodia,” Journal of Cell Science, vol. 125, no. 11. Company of Biologists, pp. 2775–2785, 2012. ista: Vinzenz M, Nemethova M, Schur FK, Mueller J, Narita A, Urban E, Winkler C, Schmeiser C, Koestler S, Rottner K, Resch G, Maéda Y, Small J. 2012. Actin branching in the initiation and maintenance of lamellipodia. Journal of Cell Science. 125(11), 2775–2785. mla: Vinzenz, Marlene, et al. “Actin Branching in the Initiation and Maintenance of Lamellipodia.” Journal of Cell Science, vol. 125, no. 11, Company of Biologists, 2012, pp. 2775–85, doi:10.1242/jcs.107623. short: M. Vinzenz, M. Nemethova, F.K. Schur, J. Mueller, A. Narita, E. Urban, C. Winkler, C. Schmeiser, S. Koestler, K. Rottner, G. Resch, Y. Maéda, J. Small, Journal of Cell Science 125 (2012) 2775–2785. date_created: 2018-12-11T11:48:37Z date_published: 2012-06-01T00:00:00Z date_updated: 2021-01-12T08:16:47Z day: '01' ddc: - '570' doi: 10.1242/jcs.107623 extern: '1' file: - access_level: open_access checksum: 2f59e15cc3a85bb500a9887cef2aab67 content_type: application/pdf creator: kschuh date_created: 2019-02-12T08:54:51Z date_updated: 2020-07-14T12:48:09Z file_id: '5956' file_name: 2012_Biologists_Vinzenz.pdf file_size: 3326073 relation: main_file file_date_updated: 2020-07-14T12:48:09Z has_accepted_license: '1' intvolume: ' 125' issue: '11' language: - iso: eng license: https://creativecommons.org/licenses/by-nc-sa/4.0/ month: '06' oa: 1 oa_version: None page: 2775 - 2785 publication: Journal of Cell Science publication_status: published publisher: Company of Biologists publist_id: '6842' quality_controlled: '1' status: public title: Actin branching in the initiation and maintenance of lamellipodia tmp: image: /images/cc_by_nc_sa.png legal_code_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode name: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) short: CC BY-NC-SA (4.0) type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 125 year: '2012' ... --- _id: '8246' abstract: - lang: eng text: The Staphylococcus aureus cell wall stress stimulon (CWSS) is activated by cell envelope-targeting antibiotics or depletion of essential cell wall biosynthesis enzymes. The functionally uncharacterized S. aureus LytR-CpsA-Psr (LCP) proteins, MsrR, SA0908 and SA2103, all belong to the CWSS. Although not essential, deletion of all three LCP proteins severely impairs cell division. We show here that VraSR-dependent CWSS expression was up to 250-fold higher in single, double and triple LCP mutants than in wild type S. aureus in the absence of external stress. The LCP triple mutant was virtually depleted of wall teichoic acids (WTA), which could be restored to different degrees by any of the single LCP proteins. Subinhibitory concentrations of tunicamycin, which inhibits the first WTA synthesis enzyme TarO (TagO), could partially complement the severe growth defect of the LCP triple mutant. Both of the latter findings support a role for S. aureus LCP proteins in late WTA synthesis, as in Bacillus subtilis where LCP proteins were recently proposed to transfer WTA from lipid carriers to the cell wall peptidoglycan. Intrinsic activation of the CWSS upon LCP deletion and the fact that LCP proteins were essential for WTA-loading of the cell wall, highlight their important role(s) in S. aureus cell envelope biogenesis. article_processing_charge: No article_type: original author: - first_name: Vanina full_name: Dengler, Vanina last_name: Dengler - first_name: Patricia Stutzmann full_name: Meier, Patricia Stutzmann last_name: Meier - first_name: Ronald full_name: Heusser, Ronald last_name: Heusser - first_name: Peter full_name: Kupferschmied, Peter last_name: Kupferschmied - first_name: Judit full_name: Fazekas, Judit id: 36432834-F248-11E8-B48F-1D18A9856A87 last_name: Fazekas orcid: 0000-0002-8777-3502 - first_name: Sarah full_name: Friebe, Sarah last_name: Friebe - first_name: Sibylle Burger full_name: Staufer, Sibylle Burger last_name: Staufer - first_name: Paul A. full_name: Majcherczyk, Paul A. last_name: Majcherczyk - first_name: Philippe full_name: Moreillon, Philippe last_name: Moreillon - first_name: Brigitte full_name: Berger-Bächi, Brigitte last_name: Berger-Bächi - first_name: Nadine full_name: McCallum, Nadine last_name: McCallum citation: ama: Dengler V, Meier PS, Heusser R, et al. Deletion of hypothetical wall teichoic acid ligases in Staphylococcus aureus activates the cell wall stress response. FEMS Microbiology Letters. 2012;333(2):109-120. doi:10.1111/j.1574-6968.2012.02603.x apa: Dengler, V., Meier, P. S., Heusser, R., Kupferschmied, P., Singer, J., Friebe, S., … McCallum, N. (2012). Deletion of hypothetical wall teichoic acid ligases in Staphylococcus aureus activates the cell wall stress response. FEMS Microbiology Letters. Oxford University Press. https://doi.org/10.1111/j.1574-6968.2012.02603.x chicago: Dengler, Vanina, Patricia Stutzmann Meier, Ronald Heusser, Peter Kupferschmied, Judit Singer, Sarah Friebe, Sibylle Burger Staufer, et al. “Deletion of Hypothetical Wall Teichoic Acid Ligases in Staphylococcus Aureus Activates the Cell Wall Stress Response.” FEMS Microbiology Letters. Oxford University Press, 2012. https://doi.org/10.1111/j.1574-6968.2012.02603.x. ieee: V. Dengler et al., “Deletion of hypothetical wall teichoic acid ligases in Staphylococcus aureus activates the cell wall stress response,” FEMS Microbiology Letters, vol. 333, no. 2. Oxford University Press, pp. 109–120, 2012. ista: Dengler V, Meier PS, Heusser R, Kupferschmied P, Singer J, Friebe S, Staufer SB, Majcherczyk PA, Moreillon P, Berger-Bächi B, McCallum N. 2012. Deletion of hypothetical wall teichoic acid ligases in Staphylococcus aureus activates the cell wall stress response. FEMS Microbiology Letters. 333(2), 109–120. mla: Dengler, Vanina, et al. “Deletion of Hypothetical Wall Teichoic Acid Ligases in Staphylococcus Aureus Activates the Cell Wall Stress Response.” FEMS Microbiology Letters, vol. 333, no. 2, Oxford University Press, 2012, pp. 109–20, doi:10.1111/j.1574-6968.2012.02603.x. short: V. Dengler, P.S. Meier, R. Heusser, P. Kupferschmied, J. Singer, S. Friebe, S.B. Staufer, P.A. Majcherczyk, P. Moreillon, B. Berger-Bächi, N. McCallum, FEMS Microbiology Letters 333 (2012) 109–120. date_created: 2020-08-10T11:54:47Z date_published: 2012-08-01T00:00:00Z date_updated: 2021-01-12T08:17:43Z day: '01' doi: 10.1111/j.1574-6968.2012.02603.x extern: '1' external_id: pmid: - '22640011' intvolume: ' 333' issue: '2' language: - iso: eng month: '08' oa_version: None page: 109-120 pmid: 1 publication: FEMS Microbiology Letters publication_identifier: issn: - 0378-1097 publication_status: published publisher: Oxford University Press quality_controlled: '1' status: public title: Deletion of hypothetical wall teichoic acid ligases in Staphylococcus aureus activates the cell wall stress response type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 333 year: '2012' ... --- _id: '826' abstract: - lang: eng text: Plants exhibit a unique developmental flexibility to ever-changing environmental conditions. To achieve their profound adaptability, plants are able to maintain permanent stem cell populations and form new organs during the entire plant life cycle. Signaling substances, called plant hormones, such as auxin, cytokinin, abscisic acid, brassinosteroid, ethylene, gibberellin, jasmonic acid, and strigolactone, govern and coordinate these developmental processes. Physiological and genetic studies have dissected the molecular components of signal perception and transduction of the individual hormonal pathways. However, over recent years it has become evident that hormones do not act only in a linear pathway. Hormonal pathways are interconnected by a complex network of interactions and feedback circuits that determines the final outcome of the individual hormone actions. This raises questions about the molecular mechanisms underlying hormonal cross talk and about how these hormonal networks are established, maintained, and modulated throughout plant development. acknowledgement: We would like to thank Annick Bleys for help in preparing the manuscript. This work was supported by the European Research Council with a Starting Independent Research grant (ERC-2007-Stg-207362-HCPO) and the project CZ.1.07/2.3.00/20.0043 (to the Central European Institute of Technology, CEITEC) to E.B. M.V. is a postdoctoral fellow of the Research Foundation Flanders. We apologize that, because of space restrictions, the scientific contributions of only a limited number of original articles could be cited and discussed. author: - first_name: Marleen full_name: Vanstraelen, Marleen last_name: Vanstraelen - first_name: Eva full_name: Eva Benková id: 38F4F166-F248-11E8-B48F-1D18A9856A87 last_name: Benková orcid: 0000-0002-8510-9739 citation: ama: Vanstraelen M, Benková E. Hormonal interactions in the regulation of plant development. Annual Review of Cell and Developmental Biology. 2012;28:463-487. doi:10.1146/annurev-cellbio-101011-155741 apa: Vanstraelen, M., & Benková, E. (2012). Hormonal interactions in the regulation of plant development. Annual Review of Cell and Developmental Biology. Annual Reviews. https://doi.org/10.1146/annurev-cellbio-101011-155741 chicago: Vanstraelen, Marleen, and Eva Benková. “Hormonal Interactions in the Regulation of Plant Development.” Annual Review of Cell and Developmental Biology. Annual Reviews, 2012. https://doi.org/10.1146/annurev-cellbio-101011-155741. ieee: M. Vanstraelen and E. Benková, “Hormonal interactions in the regulation of plant development,” Annual Review of Cell and Developmental Biology, vol. 28. Annual Reviews, pp. 463–487, 2012. ista: Vanstraelen M, Benková E. 2012. Hormonal interactions in the regulation of plant development. Annual Review of Cell and Developmental Biology. 28, 463–487. mla: Vanstraelen, Marleen, and Eva Benková. “Hormonal Interactions in the Regulation of Plant Development.” Annual Review of Cell and Developmental Biology, vol. 28, Annual Reviews, 2012, pp. 463–87, doi:10.1146/annurev-cellbio-101011-155741. short: M. Vanstraelen, E. Benková, Annual Review of Cell and Developmental Biology 28 (2012) 463–487. date_created: 2018-12-11T11:48:43Z date_published: 2012-11-01T00:00:00Z date_updated: 2021-01-12T08:17:46Z day: '01' doi: 10.1146/annurev-cellbio-101011-155741 extern: 1 intvolume: ' 28' month: '11' page: 463 - 487 publication: Annual Review of Cell and Developmental Biology publication_status: published publisher: Annual Reviews publist_id: '6822' quality_controlled: 0 status: public title: Hormonal interactions in the regulation of plant development type: journal_article volume: 28 year: '2012' ... --- _id: '829' abstract: - lang: eng text: The architecture of a plant's root system, established postembryonically, results from both coordinated root growth and lateral root branching. The plant hormones auxin and cytokinin are central endogenous signaling molecules that regulate lateral root organogenesis positively and negatively, respectively. Tight control and mutual balance of their antagonistic activities are particularly important during the early phases of lateral root organogenesis to ensure continuous lateral root initiation (LRI) and proper development of lateral root primordia (LRP). Here, we show that the early phases of lateral root organogenesis, including priming and initiation, take place in root zones with a repressed cytokinin response. Accordingly, ectopic overproduction of cytokinin in the root basal meristem most efficiently inhibits LRI. Enhanced cytokinin responses in pericycle cells between existing LRP might restrict LRI near existing LRP and, when compromised, ectopic LRI occurs. Furthermore, our results demonstrate that young LRP are more sensitive to perturbations in the cytokinin activity than are developmentally more advanced primordia. We hypothesize that the effect of cytokinin on the development of primordia possibly depends on the robustness and stability of the auxin gradient. acknowledgement: We thank Jen Sheen, Dolf Weijers, Tatsuo Kakimoto, Stephen Depuydt, and Laurent Laplaze for sharing published material, Jiri Friml for discussions, and Martine De Cock and Annick Bleys for help in preparing the manuscript. This work was supported by a Starting Independent Research grant from the European Research Council (ERC-2007-Stg-207362-HCPO) and the project CZ.1.07/2.3.00/20.0043 to the Central European Institute of Technology to E.B. and grants from the Ministry of Education, Youth, and Sports of the Czech Republic (MSM 6198959216) and the Centre of the Region Haná for Biotechnological and Agricultural Research (ED0007/01/01) to P.T. author: - first_name: Agnieszka full_name: Bielach, Agnieszka last_name: Bielach - first_name: Katerina full_name: Podlesakova, Katerina last_name: Podlesakova - first_name: Peter full_name: Peter Marhavy id: 3F45B078-F248-11E8-B48F-1D18A9856A87 last_name: Marhavy orcid: 0000-0001-5227-5741 - first_name: Jérôme full_name: Duclercq, Jérôme last_name: Duclercq - first_name: Candela full_name: Candela Cuesta id: 33A3C818-F248-11E8-B48F-1D18A9856A87 last_name: Cuesta orcid: 0000-0003-1923-2410 - first_name: Bruno full_name: Muller, Bruno last_name: Muller - first_name: Wim full_name: Grunewald, Wim last_name: Grunewald - first_name: Petr full_name: Tarkowski, Petr last_name: Tarkowski - first_name: Eva full_name: Eva Benková id: 38F4F166-F248-11E8-B48F-1D18A9856A87 last_name: Benková orcid: 0000-0002-8510-9739 citation: ama: Bielach A, Podlesakova K, Marhavý P, et al. Spatiotemporal regulation of lateral root organogenesis in Arabidopsis by cytokinin. The Plant Cell. 2012;24(10):3967-3981. doi:10.1105/tpc.112.103044 apa: Bielach, A., Podlesakova, K., Marhavý, P., Duclercq, J., Cuesta, C., Muller, B., … Benková, E. (2012). Spatiotemporal regulation of lateral root organogenesis in Arabidopsis by cytokinin. The Plant Cell. American Society of Plant Biologists. https://doi.org/10.1105/tpc.112.103044 chicago: Bielach, Agnieszka, Katerina Podlesakova, Peter Marhavý, Jérôme Duclercq, Candela Cuesta, Bruno Muller, Wim Grunewald, Petr Tarkowski, and Eva Benková. “Spatiotemporal Regulation of Lateral Root Organogenesis in Arabidopsis by Cytokinin.” The Plant Cell. American Society of Plant Biologists, 2012. https://doi.org/10.1105/tpc.112.103044. ieee: A. Bielach et al., “Spatiotemporal regulation of lateral root organogenesis in Arabidopsis by cytokinin,” The Plant Cell, vol. 24, no. 10. American Society of Plant Biologists, pp. 3967–3981, 2012. ista: Bielach A, Podlesakova K, Marhavý P, Duclercq J, Cuesta C, Muller B, Grunewald W, Tarkowski P, Benková E. 2012. Spatiotemporal regulation of lateral root organogenesis in Arabidopsis by cytokinin. The Plant Cell. 24(10), 3967–3981. mla: Bielach, Agnieszka, et al. “Spatiotemporal Regulation of Lateral Root Organogenesis in Arabidopsis by Cytokinin.” The Plant Cell, vol. 24, no. 10, American Society of Plant Biologists, 2012, pp. 3967–81, doi:10.1105/tpc.112.103044. short: A. Bielach, K. Podlesakova, P. Marhavý, J. Duclercq, C. Cuesta, B. Muller, W. Grunewald, P. Tarkowski, E. Benková, The Plant Cell 24 (2012) 3967–3981. date_created: 2018-12-11T11:48:43Z date_published: 2012-10-01T00:00:00Z date_updated: 2021-01-12T08:17:55Z day: '01' doi: 10.1105/tpc.112.103044 extern: 1 intvolume: ' 24' issue: '10' month: '10' page: 3967 - 3981 publication: The Plant Cell publication_status: published publisher: American Society of Plant Biologists publist_id: '6819' quality_controlled: 0 status: public title: Spatiotemporal regulation of lateral root organogenesis in Arabidopsis by cytokinin type: journal_article volume: 24 year: '2012' ... --- _id: '846' abstract: - lang: eng text: Whether or not evolutionary change is inherently irreversible remains a controversial topic. Some examples of evolutionary irreversibility are known; however, this question has not been comprehensively addressed at the molecular level. Here, we use data from 221 human genes with known pathogenic mutations to estimate the rate of irreversibility in protein evolution. For these genes, we reconstruct ancestral amino acid sequences along the mammalian phylogeny and identify ancestral amino acid states that match known pathogenic mutations. Such cases represent inherent evolutionary irreversibility because, at the present moment, reversals to these ancestral amino acid states are impossible for the human lineage. We estimate that approximately 10% of all amino acid substitutions along the mammalian phylogeny are irreversible, such that a return to the ancestral amino acid state would lead to a pathogenic phenotype. For a subset of 51 genes with high rates of irreversibility, as much as 40% of all amino acid evolution was estimated to be irreversible. Because pathogenic phenotypes do not resemble ancestral phenotypes, the molecular nature of the high rate of irreversibility in proteins is best explained by evolution with a high prevalence of compensatory, epistatic interactions between amino acid sites. Under such mode of protein evolution, once an amino acid substitution is fixed, the probability of its reversal declines as the protein sequence accumulates changes that affect the phenotypic manifestation of the ancestral state. The prevalence of epistasis in evolution indicates that the observed high rate of irreversibility in protein evolution is an inherent property of protein structure and function. acknowledgement: This work was supported by Plan Nacional grant BFU2009-09271 from the Spanish Ministry of Science and Innovation and by FPU (Formación del Profesorado Universitario) program grant AP2008-01888 from the Spanish Ministry of Education to O.S. F.A.K. is a European Molecular Biology Organization Young Investigator and Howard Hughes Medical Institute International Early Career Scientist. author: - first_name: Onuralp full_name: Soylemez, Onuralp last_name: Soylemez - first_name: Fyodor full_name: Fyodor Kondrashov id: 44FDEF62-F248-11E8-B48F-1D18A9856A87 last_name: Kondrashov orcid: 0000-0001-8243-4694 citation: ama: Soylemez O, Kondrashov F. Estimating the rate of irreversibility in protein evolution. Genome Biology and Evolution. 2012;4(12):1213-1222. doi:10.1093/gbe/evs096 apa: Soylemez, O., & Kondrashov, F. (2012). Estimating the rate of irreversibility in protein evolution. Genome Biology and Evolution. Oxford University Press. https://doi.org/10.1093/gbe/evs096 chicago: Soylemez, Onuralp, and Fyodor Kondrashov. “Estimating the Rate of Irreversibility in Protein Evolution.” Genome Biology and Evolution. Oxford University Press, 2012. https://doi.org/10.1093/gbe/evs096. ieee: O. Soylemez and F. Kondrashov, “Estimating the rate of irreversibility in protein evolution,” Genome Biology and Evolution, vol. 4, no. 12. Oxford University Press, pp. 1213–1222, 2012. ista: Soylemez O, Kondrashov F. 2012. Estimating the rate of irreversibility in protein evolution. Genome Biology and Evolution. 4(12), 1213–1222. mla: Soylemez, Onuralp, and Fyodor Kondrashov. “Estimating the Rate of Irreversibility in Protein Evolution.” Genome Biology and Evolution, vol. 4, no. 12, Oxford University Press, 2012, pp. 1213–22, doi:10.1093/gbe/evs096. short: O. Soylemez, F. Kondrashov, Genome Biology and Evolution 4 (2012) 1213–1222. date_created: 2018-12-11T11:48:49Z date_published: 2012-01-01T00:00:00Z date_updated: 2021-01-12T08:19:25Z day: '01' doi: 10.1093/gbe/evs096 extern: 1 intvolume: ' 4' issue: '12' license: https://creativecommons.org/licenses/by-nc/4.0/ month: '01' page: 1213 - 1222 publication: Genome Biology and Evolution publication_status: published publisher: Oxford University Press publist_id: '6802' quality_controlled: 0 status: public title: Estimating the rate of irreversibility in protein evolution tmp: image: /images/cc_by_nc.png legal_code_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode name: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) short: CC BY-NC (4.0) type: journal_article volume: 4 year: '2012' ... --- _id: '8463' abstract: - lang: eng text: The 1H dipolar network, which is the major obstacle for applying proton detection in the solid-state, can be reduced by deuteration, employing the RAP (Reduced Adjoining Protonation) labeling scheme, which yields random protonation at non-exchangeable sites. We present here a systematic study on the optimal degree of random sidechain protonation in RAP samples as a function of the MAS (magic angle spinning) frequency. In particular, we compare 1H sensitivity and linewidth of a microcrystalline protein, the SH3 domain of chicken α-spectrin, for samples, prepared with 5–25 % H2O in the E. coli growth medium, in the MAS frequency range of 20–60 kHz. At an external field of 19.96 T (850 MHz), we find that using a proton concentration between 15 and 25 % in the M9 medium yields the best compromise in terms of sensitivity and resolution, with an achievable average 1H linewidth on the order of 40–50 Hz. Comparing sensitivities at a MAS frequency of 60 versus 20 kHz, a gain in sensitivity by a factor of 4–4.5 is observed in INEPT-based 1H detected 1D 1H,13C correlation experiments. In total, we find that spectra recorded with a 1.3 mm rotor at 60 kHz have almost the same sensitivity as spectra recorded with a fully packed 3.2 mm rotor at 20 kHz, even though ~20× less material is employed. The improved sensitivity is attributed to 1H line narrowing due to fast MAS and to the increased efficiency of the 1.3 mm coil. article_processing_charge: No article_type: original author: - first_name: Sam full_name: Asami, Sam last_name: Asami - first_name: Kathrin full_name: Szekely, Kathrin last_name: Szekely - first_name: Paul full_name: Schanda, Paul id: 7B541462-FAF6-11E9-A490-E8DFE5697425 last_name: Schanda orcid: 0000-0002-9350-7606 - first_name: Beat H. full_name: Meier, Beat H. last_name: Meier - first_name: Bernd full_name: Reif, Bernd last_name: Reif citation: ama: Asami S, Szekely K, Schanda P, Meier BH, Reif B. Optimal degree of protonation for 1H detection of aliphatic sites in randomly deuterated proteins as a function of the MAS frequency. Journal of Biomolecular NMR. 2012;54(2):155-168. doi:10.1007/s10858-012-9659-9 apa: Asami, S., Szekely, K., Schanda, P., Meier, B. H., & Reif, B. (2012). Optimal degree of protonation for 1H detection of aliphatic sites in randomly deuterated proteins as a function of the MAS frequency. Journal of Biomolecular NMR. Springer Nature. https://doi.org/10.1007/s10858-012-9659-9 chicago: Asami, Sam, Kathrin Szekely, Paul Schanda, Beat H. Meier, and Bernd Reif. “Optimal Degree of Protonation for 1H Detection of Aliphatic Sites in Randomly Deuterated Proteins as a Function of the MAS Frequency.” Journal of Biomolecular NMR. Springer Nature, 2012. https://doi.org/10.1007/s10858-012-9659-9. ieee: S. Asami, K. Szekely, P. Schanda, B. H. Meier, and B. Reif, “Optimal degree of protonation for 1H detection of aliphatic sites in randomly deuterated proteins as a function of the MAS frequency,” Journal of Biomolecular NMR, vol. 54, no. 2. Springer Nature, pp. 155–168, 2012. ista: Asami S, Szekely K, Schanda P, Meier BH, Reif B. 2012. Optimal degree of protonation for 1H detection of aliphatic sites in randomly deuterated proteins as a function of the MAS frequency. Journal of Biomolecular NMR. 54(2), 155–168. mla: Asami, Sam, et al. “Optimal Degree of Protonation for 1H Detection of Aliphatic Sites in Randomly Deuterated Proteins as a Function of the MAS Frequency.” Journal of Biomolecular NMR, vol. 54, no. 2, Springer Nature, 2012, pp. 155–68, doi:10.1007/s10858-012-9659-9. short: S. Asami, K. Szekely, P. Schanda, B.H. Meier, B. Reif, Journal of Biomolecular NMR 54 (2012) 155–168. date_created: 2020-09-18T10:09:18Z date_published: 2012-08-23T00:00:00Z date_updated: 2021-01-12T08:19:27Z day: '23' doi: 10.1007/s10858-012-9659-9 extern: '1' intvolume: ' 54' issue: '2' language: - iso: eng month: '08' oa_version: None page: 155-168 publication: Journal of Biomolecular NMR publication_identifier: issn: - 0925-2738 - 1573-5001 publication_status: published publisher: Springer Nature quality_controlled: '1' status: public title: Optimal degree of protonation for 1H detection of aliphatic sites in randomly deuterated proteins as a function of the MAS frequency type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 54 year: '2012' ... --- _id: '8465' abstract: - lang: eng text: We demonstrate that conformational exchange processes in proteins on microsecond-to-millisecond time scales can be detected and quantified by solid-state NMR spectroscopy. We show two independent approaches that measure the effect of conformational exchange on transverse relaxation parameters, namely Carr–Purcell–Meiboom–Gill relaxation-dispersion experiments and measurement of differential multiple-quantum coherence decay. Long coherence lifetimes, as required for these experiments, are achieved by the use of highly deuterated samples and fast magic-angle spinning. The usefulness of the approaches is demonstrated by application to microcrystalline ubiquitin. We detect a conformational exchange process in a region of the protein for which dynamics have also been observed in solution. Interestingly, quantitative analysis of the data reveals that the exchange process is more than 1 order of magnitude slower than in solution, and this points to the impact of the crystalline environment on free energy barriers. article_processing_charge: No article_type: original author: - first_name: Martin full_name: Tollinger, Martin last_name: Tollinger - first_name: Astrid C. full_name: Sivertsen, Astrid C. last_name: Sivertsen - first_name: Beat H. full_name: Meier, Beat H. last_name: Meier - first_name: Matthias full_name: Ernst, Matthias last_name: Ernst - first_name: Paul full_name: Schanda, Paul id: 7B541462-FAF6-11E9-A490-E8DFE5697425 last_name: Schanda orcid: 0000-0002-9350-7606 citation: ama: Tollinger M, Sivertsen AC, Meier BH, Ernst M, Schanda P. Site-resolved measurement of microsecond-to-millisecond conformational-exchange processes in proteins by solid-state NMR spectroscopy. Journal of the American Chemical Society. 2012;134(36):14800-14807. doi:10.1021/ja303591y apa: Tollinger, M., Sivertsen, A. C., Meier, B. H., Ernst, M., & Schanda, P. (2012). Site-resolved measurement of microsecond-to-millisecond conformational-exchange processes in proteins by solid-state NMR spectroscopy. Journal of the American Chemical Society. American Chemical Society. https://doi.org/10.1021/ja303591y chicago: Tollinger, Martin, Astrid C. Sivertsen, Beat H. Meier, Matthias Ernst, and Paul Schanda. “Site-Resolved Measurement of Microsecond-to-Millisecond Conformational-Exchange Processes in Proteins by Solid-State NMR Spectroscopy.” Journal of the American Chemical Society. American Chemical Society, 2012. https://doi.org/10.1021/ja303591y. ieee: M. Tollinger, A. C. Sivertsen, B. H. Meier, M. Ernst, and P. Schanda, “Site-resolved measurement of microsecond-to-millisecond conformational-exchange processes in proteins by solid-state NMR spectroscopy,” Journal of the American Chemical Society, vol. 134, no. 36. American Chemical Society, pp. 14800–14807, 2012. ista: Tollinger M, Sivertsen AC, Meier BH, Ernst M, Schanda P. 2012. Site-resolved measurement of microsecond-to-millisecond conformational-exchange processes in proteins by solid-state NMR spectroscopy. Journal of the American Chemical Society. 134(36), 14800–14807. mla: Tollinger, Martin, et al. “Site-Resolved Measurement of Microsecond-to-Millisecond Conformational-Exchange Processes in Proteins by Solid-State NMR Spectroscopy.” Journal of the American Chemical Society, vol. 134, no. 36, American Chemical Society, 2012, pp. 14800–07, doi:10.1021/ja303591y. short: M. Tollinger, A.C. Sivertsen, B.H. Meier, M. Ernst, P. Schanda, Journal of the American Chemical Society 134 (2012) 14800–14807. date_created: 2020-09-18T10:10:20Z date_published: 2012-08-21T00:00:00Z date_updated: 2021-01-12T08:19:27Z day: '21' doi: 10.1021/ja303591y extern: '1' intvolume: ' 134' issue: '36' language: - iso: eng month: '08' oa_version: None page: 14800-14807 publication: Journal of the American Chemical Society publication_identifier: issn: - 0002-7863 - 1520-5126 publication_status: published publisher: American Chemical Society quality_controlled: '1' status: public title: Site-resolved measurement of microsecond-to-millisecond conformational-exchange processes in proteins by solid-state NMR spectroscopy type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 134 year: '2012' ... --- _id: '8466' abstract: - lang: eng text: Recent advances in NMR spectroscopy and the availability of high magnetic field strengths now offer the possibility to record real-time 3D NMR spectra of short-lived protein states, e.g., states that become transiently populated during protein folding. Here we present a strategy for obtaining sequential NMR assignments as well as atom-resolved information on structural and dynamic features within a folding intermediate of the amyloidogenic protein β2-microglobulin that has a half-lifetime of only 20 min. article_processing_charge: No article_type: original author: - first_name: Enrico full_name: Rennella, Enrico last_name: Rennella - first_name: Thomas full_name: Cutuil, Thomas last_name: Cutuil - first_name: Paul full_name: Schanda, Paul id: 7B541462-FAF6-11E9-A490-E8DFE5697425 last_name: Schanda orcid: 0000-0002-9350-7606 - first_name: Isabel full_name: Ayala, Isabel last_name: Ayala - first_name: Vincent full_name: Forge, Vincent last_name: Forge - first_name: Bernhard full_name: Brutscher, Bernhard last_name: Brutscher citation: ama: Rennella E, Cutuil T, Schanda P, Ayala I, Forge V, Brutscher B. Real-time NMR characterization of structure and dynamics in a transiently populated protein folding intermediate. Journal of the American Chemical Society. 2012;134(19):8066-8069. doi:10.1021/ja302598j apa: Rennella, E., Cutuil, T., Schanda, P., Ayala, I., Forge, V., & Brutscher, B. (2012). Real-time NMR characterization of structure and dynamics in a transiently populated protein folding intermediate. Journal of the American Chemical Society. American Chemical Society. https://doi.org/10.1021/ja302598j chicago: Rennella, Enrico, Thomas Cutuil, Paul Schanda, Isabel Ayala, Vincent Forge, and Bernhard Brutscher. “Real-Time NMR Characterization of Structure and Dynamics in a Transiently Populated Protein Folding Intermediate.” Journal of the American Chemical Society. American Chemical Society, 2012. https://doi.org/10.1021/ja302598j. ieee: E. Rennella, T. Cutuil, P. Schanda, I. Ayala, V. Forge, and B. Brutscher, “Real-time NMR characterization of structure and dynamics in a transiently populated protein folding intermediate,” Journal of the American Chemical Society, vol. 134, no. 19. American Chemical Society, pp. 8066–8069, 2012. ista: Rennella E, Cutuil T, Schanda P, Ayala I, Forge V, Brutscher B. 2012. Real-time NMR characterization of structure and dynamics in a transiently populated protein folding intermediate. Journal of the American Chemical Society. 134(19), 8066–8069. mla: Rennella, Enrico, et al. “Real-Time NMR Characterization of Structure and Dynamics in a Transiently Populated Protein Folding Intermediate.” Journal of the American Chemical Society, vol. 134, no. 19, American Chemical Society, 2012, pp. 8066–69, doi:10.1021/ja302598j. short: E. Rennella, T. Cutuil, P. Schanda, I. Ayala, V. Forge, B. Brutscher, Journal of the American Chemical Society 134 (2012) 8066–8069. date_created: 2020-09-18T10:10:28Z date_published: 2012-05-03T00:00:00Z date_updated: 2021-01-12T08:19:28Z day: '03' doi: 10.1021/ja302598j extern: '1' intvolume: ' 134' issue: '19' language: - iso: eng month: '05' oa_version: None page: 8066-8069 publication: Journal of the American Chemical Society publication_identifier: issn: - 0002-7863 - 1520-5126 publication_status: published publisher: American Chemical Society quality_controlled: '1' status: public title: Real-time NMR characterization of structure and dynamics in a transiently populated protein folding intermediate type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 134 year: '2012' ... --- _id: '8467' abstract: - lang: eng text: Partial deuteration is a powerful tool to increase coherence life times and spectral resolution in proton solid-state NMR. The J coupling to deuterium needs, however, to be decoupled to maintain the good resolution in the (usually indirect) 13C dimension(s). We present a simple and reversible way to expand a commercial 1.3 mm HCN MAS probe with a 2H channel with sufficient field strength for J-decoupling of deuterium, namely 2–3 kHz. The coil is placed at the outside of the stator and requires no significant modifications to the probe. The performance and the realizable gains in sensitivity and resolution are demonstrated using perdeuterated ubiquitin, with selectively CHD2-labeled methyl groups. article_processing_charge: No article_type: original author: - first_name: Matthias full_name: Huber, Matthias last_name: Huber - first_name: Oliver full_name: With, Oliver last_name: With - first_name: Paul full_name: Schanda, Paul id: 7B541462-FAF6-11E9-A490-E8DFE5697425 last_name: Schanda orcid: 0000-0002-9350-7606 - first_name: René full_name: Verel, René last_name: Verel - first_name: Matthias full_name: Ernst, Matthias last_name: Ernst - first_name: Beat H. full_name: Meier, Beat H. last_name: Meier citation: ama: Huber M, With O, Schanda P, Verel R, Ernst M, Meier BH. A supplementary coil for 2H decoupling with commercial HCN MAS probes. Journal of Magnetic Resonance. 2012;214:76-80. doi:10.1016/j.jmr.2011.10.010 apa: Huber, M., With, O., Schanda, P., Verel, R., Ernst, M., & Meier, B. H. (2012). A supplementary coil for 2H decoupling with commercial HCN MAS probes. Journal of Magnetic Resonance. Elsevier. https://doi.org/10.1016/j.jmr.2011.10.010 chicago: Huber, Matthias, Oliver With, Paul Schanda, René Verel, Matthias Ernst, and Beat H. Meier. “A Supplementary Coil for 2H Decoupling with Commercial HCN MAS Probes.” Journal of Magnetic Resonance. Elsevier, 2012. https://doi.org/10.1016/j.jmr.2011.10.010. ieee: M. Huber, O. With, P. Schanda, R. Verel, M. Ernst, and B. H. Meier, “A supplementary coil for 2H decoupling with commercial HCN MAS probes,” Journal of Magnetic Resonance, vol. 214. Elsevier, pp. 76–80, 2012. ista: Huber M, With O, Schanda P, Verel R, Ernst M, Meier BH. 2012. A supplementary coil for 2H decoupling with commercial HCN MAS probes. Journal of Magnetic Resonance. 214, 76–80. mla: Huber, Matthias, et al. “A Supplementary Coil for 2H Decoupling with Commercial HCN MAS Probes.” Journal of Magnetic Resonance, vol. 214, Elsevier, 2012, pp. 76–80, doi:10.1016/j.jmr.2011.10.010. short: M. Huber, O. With, P. Schanda, R. Verel, M. Ernst, B.H. Meier, Journal of Magnetic Resonance 214 (2012) 76–80. date_created: 2020-09-18T10:10:36Z date_published: 2012-01-01T00:00:00Z date_updated: 2021-01-12T08:19:28Z day: '01' doi: 10.1016/j.jmr.2011.10.010 extern: '1' intvolume: ' 214' language: - iso: eng month: '01' oa_version: None page: 76-80 publication: Journal of Magnetic Resonance publication_identifier: issn: - 1090-7807 publication_status: published publisher: Elsevier quality_controlled: '1' status: public title: A supplementary coil for 2H decoupling with commercial HCN MAS probes type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 214 year: '2012' ... --- _id: '8502' abstract: - lang: eng text: 'The famous ergodic hypothesis suggests that for a typical Hamiltonian on a typical energy surface nearly all trajectories are dense. KAM theory disproves it. Ehrenfest (The Conceptual Foundations of the Statistical Approach in Mechanics. Ithaca, NY: Cornell University Press, 1959) and Birkhoff (Collected Math Papers. Vol 2, New York: Dover, pp 462–465, 1968) stated the quasi-ergodic hypothesis claiming that a typical Hamiltonian on a typical energy surface has a dense orbit. This question is wide open. Herman (Proceedings of the International Congress of Mathematicians, Vol II (Berlin, 1998). Doc Math 1998, Extra Vol II, Berlin: Int Math Union, pp 797–808, 1998) proposed to look for an example of a Hamiltonian near H0(I)=⟨I,I⟩2 with a dense orbit on the unit energy surface. In this paper we construct a Hamiltonian H0(I)+εH1(θ,I,ε) which has an orbit dense in a set of maximal Hausdorff dimension equal to 5 on the unit energy surface.' article_processing_charge: No article_type: original author: - first_name: Vadim full_name: Kaloshin, Vadim id: FE553552-CDE8-11E9-B324-C0EBE5697425 last_name: Kaloshin orcid: 0000-0002-6051-2628 - first_name: Maria full_name: Saprykina, Maria last_name: Saprykina citation: ama: Kaloshin V, Saprykina M. An example of a nearly integrable Hamiltonian system with a trajectory dense in a set of maximal Hausdorff dimension. Communications in Mathematical Physics. 2012;315(3):643-697. doi:10.1007/s00220-012-1532-x apa: Kaloshin, V., & Saprykina, M. (2012). An example of a nearly integrable Hamiltonian system with a trajectory dense in a set of maximal Hausdorff dimension. Communications in Mathematical Physics. Springer Nature. https://doi.org/10.1007/s00220-012-1532-x chicago: Kaloshin, Vadim, and Maria Saprykina. “An Example of a Nearly Integrable Hamiltonian System with a Trajectory Dense in a Set of Maximal Hausdorff Dimension.” Communications in Mathematical Physics. Springer Nature, 2012. https://doi.org/10.1007/s00220-012-1532-x. ieee: V. Kaloshin and M. Saprykina, “An example of a nearly integrable Hamiltonian system with a trajectory dense in a set of maximal Hausdorff dimension,” Communications in Mathematical Physics, vol. 315, no. 3. Springer Nature, pp. 643–697, 2012. ista: Kaloshin V, Saprykina M. 2012. An example of a nearly integrable Hamiltonian system with a trajectory dense in a set of maximal Hausdorff dimension. Communications in Mathematical Physics. 315(3), 643–697. mla: Kaloshin, Vadim, and Maria Saprykina. “An Example of a Nearly Integrable Hamiltonian System with a Trajectory Dense in a Set of Maximal Hausdorff Dimension.” Communications in Mathematical Physics, vol. 315, no. 3, Springer Nature, 2012, pp. 643–97, doi:10.1007/s00220-012-1532-x. short: V. Kaloshin, M. Saprykina, Communications in Mathematical Physics 315 (2012) 643–697. date_created: 2020-09-18T10:47:16Z date_published: 2012-11-01T00:00:00Z date_updated: 2021-01-12T08:19:44Z day: '01' doi: 10.1007/s00220-012-1532-x extern: '1' intvolume: ' 315' issue: '3' keyword: - Mathematical Physics - Statistical and Nonlinear Physics language: - iso: eng month: '11' oa_version: None page: 643-697 publication: Communications in Mathematical Physics publication_identifier: issn: - 0010-3616 - 1432-0916 publication_status: published publisher: Springer Nature quality_controlled: '1' status: public title: An example of a nearly integrable Hamiltonian system with a trajectory dense in a set of maximal Hausdorff dimension type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 315 year: '2012' ... --- _id: '858' abstract: - lang: eng text: 'ackground: The evolution and genomic stop codon frequencies have not been rigorously studied with the exception of coding of non-canonical amino acids. Here we study the rate of evolution and frequency distribution of stop codons in bacterial genomes.Results: We show that in bacteria stop codons evolve slower than synonymous sites, suggesting the action of weak negative selection. However, the frequency of stop codons relative to genomic nucleotide content indicated that this selection regime is not straightforward. The frequency of TAA and TGA stop codons is GC-content dependent, with TAA decreasing and TGA increasing with GC-content, while TAG frequency is independent of GC-content. Applying a formal, analytical model to these data we found that the relationship between stop codon frequencies and nucleotide content cannot be explained by mutational biases or selection on nucleotide content. However, with weak nucleotide content-dependent selection on TAG, -0.5 < Nes < 1.5, the model fits all of the data and recapitulates the relationship between TAG and nucleotide content. For biologically plausible rates of mutations we show that, in bacteria, TAG stop codon is universally associated with lower fitness, with TAA being the optimal for G-content < 16% while for G-content > 16% TGA has a higher fitness than TAG.Conclusions: Our data indicate that TAG codon is universally suboptimal in the bacterial lineage, such that TAA is likely to be the preferred stop codon for low GC content while the TGA is the preferred stop codon for high GC content. The optimization of stop codon usage may therefore be useful in genome engineering or gene expression optimization applications.Reviewers: This article was reviewed by Michail Gelfand, Arcady Mushegian and Shamil Sunyaev. For the full reviews, please go to the Reviewers'' Comments section.' acknowledgement: | We thank Elena Alkalaeva and Peter Kolosov for insightful discussion and Brian Charlesworth for a critical reading of our manuscript. The work has been supported by a Plan Nacional grant from the Spanish Ministry of Science and Innovation, EMBO Young Investigator and Howard Hughes Medical Institute International Early Career Scientist awards. author: - first_name: Inna full_name: Povolotskaya, Inna last_name: Povolotskaya - first_name: Fyodor full_name: Fyodor Kondrashov id: 44FDEF62-F248-11E8-B48F-1D18A9856A87 last_name: Kondrashov orcid: 0000-0001-8243-4694 - first_name: Alice full_name: Ledda, Alice last_name: Ledda - first_name: Peter full_name: Vlasov, Peter K last_name: Vlasov citation: ama: Povolotskaya I, Kondrashov F, Ledda A, Vlasov P. Stop codons in bacteria are not selectively equivalent. Biology Direct. 2012;7. doi:10.1186/1745-6150-7-30 apa: Povolotskaya, I., Kondrashov, F., Ledda, A., & Vlasov, P. (2012). Stop codons in bacteria are not selectively equivalent. Biology Direct. BioMed Central. https://doi.org/10.1186/1745-6150-7-30 chicago: Povolotskaya, Inna, Fyodor Kondrashov, Alice Ledda, and Peter Vlasov. “Stop Codons in Bacteria Are Not Selectively Equivalent.” Biology Direct. BioMed Central, 2012. https://doi.org/10.1186/1745-6150-7-30. ieee: I. Povolotskaya, F. Kondrashov, A. Ledda, and P. Vlasov, “Stop codons in bacteria are not selectively equivalent,” Biology Direct, vol. 7. BioMed Central, 2012. ista: Povolotskaya I, Kondrashov F, Ledda A, Vlasov P. 2012. Stop codons in bacteria are not selectively equivalent. Biology Direct. 7. mla: Povolotskaya, Inna, et al. “Stop Codons in Bacteria Are Not Selectively Equivalent.” Biology Direct, vol. 7, BioMed Central, 2012, doi:10.1186/1745-6150-7-30. short: I. Povolotskaya, F. Kondrashov, A. Ledda, P. Vlasov, Biology Direct 7 (2012). date_created: 2018-12-11T11:48:52Z date_published: 2012-09-01T00:00:00Z date_updated: 2021-01-12T08:20:08Z day: '01' doi: 10.1186/1745-6150-7-30 extern: 1 intvolume: ' 7' month: '09' publication: Biology Direct publication_status: published publisher: BioMed Central publist_id: '6792' quality_controlled: 0 status: public title: Stop codons in bacteria are not selectively equivalent tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article volume: 7 year: '2012' ... --- _id: '900' abstract: - lang: eng text: 'The main forces directing long-term molecular evolution remain obscure. A sizable fraction of amino-acid substitutions seem to be fixed by positive selection, but it is unclear to what degree long-term protein evolution is constrained by epistasis, that is, instances when substitutions that are accepted in one genotype are deleterious in another. Here we obtain a quantitative estimate of the prevalence of epistasis in long-term protein evolution by relating data on amino-acid usage in 14 organelle proteins and 2 nuclear-encoded proteins to their rates of short-term evolution. We studied multiple alignments of at least 1,000 orthologues for each of these 16 proteins from species from a diverse phylogenetic background and found that an average site contained approximately eight different amino acids. Thus, without epistasis an average site should accept two-fifths of all possible amino acids, and the average rate of amino-acid substitutions should therefore be about three-fifths lower than the rate of neutral evolution. However, we found that the measured rate of amino-acid substitution in recent evolution is 20 times lower than the rate of neutral evolution and an order of magnitude lower than that expected in the absence of epistasis. These data indicate that epistasis is pervasive throughout protein evolution: about 90 per cent of all amino-acid substitutions have a neutral or beneficial impact only in the genetic backgrounds in which they occur, and must therefore be deleterious in a different background of other species. Our findings show that most amino-acid substitutions have different fitness effects in different species and that epistasis provides the primary conceptual framework to describe the tempo and mode of long-term protein evolution.' acknowledgement: | The work was supported by Plan Nacional grants from the Spanish Ministry of Science and Innovation, to F.A.K. and C.N. C.K. was supported by the European Union FP7 project Quantomics (KBBE2A222664). F.A.K. is a European Molecular Biology Organization Young Investigator and Howard Hughes Medical Institute International Early Career Scientist. We thank B. Lehner and T. Warnecke for input and a critical reading of the manuscript. author: - first_name: Michael full_name: Breen, Michael S last_name: Breen - first_name: Carsten full_name: Kemena, Carsten last_name: Kemena - first_name: Peter full_name: Vlasov, Peter K last_name: Vlasov - first_name: Cédric full_name: Notredame, Cédric last_name: Notredame - first_name: Fyodor full_name: Fyodor Kondrashov id: 44FDEF62-F248-11E8-B48F-1D18A9856A87 last_name: Kondrashov orcid: 0000-0001-8243-4694 citation: ama: Breen M, Kemena C, Vlasov P, Notredame C, Kondrashov F. Epistasis as the primary factor in molecular evolution. Nature. 2012;490(7421):535-538. doi:10.1038/nature11510 apa: Breen, M., Kemena, C., Vlasov, P., Notredame, C., & Kondrashov, F. (2012). Epistasis as the primary factor in molecular evolution. Nature. Nature Publishing Group. https://doi.org/10.1038/nature11510 chicago: Breen, Michael, Carsten Kemena, Peter Vlasov, Cédric Notredame, and Fyodor Kondrashov. “Epistasis as the Primary Factor in Molecular Evolution.” Nature. Nature Publishing Group, 2012. https://doi.org/10.1038/nature11510. ieee: M. Breen, C. Kemena, P. Vlasov, C. Notredame, and F. Kondrashov, “Epistasis as the primary factor in molecular evolution,” Nature, vol. 490, no. 7421. Nature Publishing Group, pp. 535–538, 2012. ista: Breen M, Kemena C, Vlasov P, Notredame C, Kondrashov F. 2012. Epistasis as the primary factor in molecular evolution. Nature. 490(7421), 535–538. mla: Breen, Michael, et al. “Epistasis as the Primary Factor in Molecular Evolution.” Nature, vol. 490, no. 7421, Nature Publishing Group, 2012, pp. 535–38, doi:10.1038/nature11510. short: M. Breen, C. Kemena, P. Vlasov, C. Notredame, F. Kondrashov, Nature 490 (2012) 535–538. date_created: 2018-12-11T11:49:06Z date_published: 2012-10-25T00:00:00Z date_updated: 2021-01-12T08:21:45Z day: '25' doi: 10.1038/nature11510 extern: 1 intvolume: ' 490' issue: '7421' month: '10' page: 535 - 538 publication: Nature publication_status: published publisher: Nature Publishing Group publist_id: '6748' quality_controlled: 0 status: public title: Epistasis as the primary factor in molecular evolution type: journal_article volume: 490 year: '2012' ... --- _id: '9014' abstract: - lang: eng text: In this Letter, we explore experimentally the phase behavior of a dense active suspension of self-propelled colloids. In addition to a solidlike and gaslike phase observed for high and low densities, a novel cluster phase is reported at intermediate densities. This takes the form of a stationary assembly of dense aggregates—resulting from a permanent dynamical merging and separation of active colloids—whose average size grows with activity as a linear function of the self-propelling velocity. While different possible scenarios can be considered to account for these observations—such as a generic velocity weakening instability recently put forward—we show that the experimental results are reproduced mathematically by a chemotactic aggregation mechanism, originally introduced to account for bacterial aggregation and accounting here for diffusiophoretic chemical interaction between colloidal swimmers. article_number: '268303' article_processing_charge: No article_type: letter_note author: - first_name: I. full_name: Theurkauff, I. last_name: Theurkauff - first_name: C. full_name: Cottin-Bizonne, C. last_name: Cottin-Bizonne - first_name: Jérémie A full_name: Palacci, Jérémie A id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d last_name: Palacci orcid: 0000-0002-7253-9465 - first_name: C. full_name: Ybert, C. last_name: Ybert - first_name: L. full_name: Bocquet, L. last_name: Bocquet citation: ama: Theurkauff I, Cottin-Bizonne C, Palacci JA, Ybert C, Bocquet L. Dynamic clustering in active colloidal suspensions with chemical signaling. Physical Review Letters. 2012;108(26). doi:10.1103/physrevlett.108.268303 apa: Theurkauff, I., Cottin-Bizonne, C., Palacci, J. A., Ybert, C., & Bocquet, L. (2012). Dynamic clustering in active colloidal suspensions with chemical signaling. Physical Review Letters. American Physical Society . https://doi.org/10.1103/physrevlett.108.268303 chicago: Theurkauff, I., C. Cottin-Bizonne, Jérémie A Palacci, C. Ybert, and L. Bocquet. “Dynamic Clustering in Active Colloidal Suspensions with Chemical Signaling.” Physical Review Letters. American Physical Society , 2012. https://doi.org/10.1103/physrevlett.108.268303. ieee: I. Theurkauff, C. Cottin-Bizonne, J. A. Palacci, C. Ybert, and L. Bocquet, “Dynamic clustering in active colloidal suspensions with chemical signaling,” Physical Review Letters, vol. 108, no. 26. American Physical Society , 2012. ista: Theurkauff I, Cottin-Bizonne C, Palacci JA, Ybert C, Bocquet L. 2012. Dynamic clustering in active colloidal suspensions with chemical signaling. Physical Review Letters. 108(26), 268303. mla: Theurkauff, I., et al. “Dynamic Clustering in Active Colloidal Suspensions with Chemical Signaling.” Physical Review Letters, vol. 108, no. 26, 268303, American Physical Society , 2012, doi:10.1103/physrevlett.108.268303. short: I. Theurkauff, C. Cottin-Bizonne, J.A. Palacci, C. Ybert, L. Bocquet, Physical Review Letters 108 (2012). date_created: 2021-01-19T10:26:59Z date_published: 2012-06-29T00:00:00Z date_updated: 2023-02-23T13:46:45Z day: '29' doi: 10.1103/physrevlett.108.268303 extern: '1' external_id: arxiv: - '1202.6264' pmid: - '23005020' intvolume: ' 108' issue: '26' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1202.6264 month: '06' oa: 1 oa_version: Preprint pmid: 1 publication: Physical Review Letters publication_identifier: eissn: - '10797114' issn: - '00319007' publication_status: published publisher: 'American Physical Society ' quality_controlled: '1' scopus_import: '1' status: public title: Dynamic clustering in active colloidal suspensions with chemical signaling type: journal_article user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425 volume: 108 year: '2012' ... --- _id: '91' abstract: - lang: eng text: 'We demonstrate how to appropriately estimate the zero-frequency (static) hyperpolarizability of an organic molecule from its charge distribution, and we explore applications of these estimates for identifying and evaluating new organic nonlinear optical (NLO) materials. First, we calculate hyperpolarizabilities from Hartree-Fock-derived charge distributions and find order-of-magnitude agreement with experimental values. We show that these simple arithmetic calculations will enable systematic searches for new organic NLO molecules. Second, we derive hyperpolarizabilities from crystallographic data using a multipolar charge-density analysis and find good agreement with empirical calculations. This demonstrates an experimental determination of the full static hyperpolarizability tensor in a solid-state sample. ' acknowledgement: This work was supported by The Winston Churchill Foundation of the United States (A.P.H., M.A.B.F., D.D.H.), The Royal Society via a University Research Fellowship (J.M.C.), and the University of New Brunswick via The Vice-Chancellor’s Research Chair (J.M.C.). article_number: '033512' author: - first_name: Andrew P full_name: Higginbotham, Andrew P id: 4AD6785A-F248-11E8-B48F-1D18A9856A87 last_name: Higginbotham orcid: 0000-0003-2607-2363 - first_name: Jacqueline full_name: Cole, Jacqueline last_name: Cole - first_name: Martin full_name: Blood Forsythe, Martin last_name: Blood Forsythe - first_name: Daniel full_name: Hickstein, Daniel last_name: Hickstein citation: ama: Higginbotham AP, Cole J, Blood Forsythe M, Hickstein D. Identifying and evaluating organic nonlinear optical materials via molecular moments. Journal of Applied Physics. 2012;111(3). doi:10.1063/1.3678593 apa: Higginbotham, A. P., Cole, J., Blood Forsythe, M., & Hickstein, D. (2012). Identifying and evaluating organic nonlinear optical materials via molecular moments. Journal of Applied Physics. American Institute of Physics. https://doi.org/10.1063/1.3678593 chicago: Higginbotham, Andrew P, Jacqueline Cole, Martin Blood Forsythe, and Daniel Hickstein. “Identifying and Evaluating Organic Nonlinear Optical Materials via Molecular Moments.” Journal of Applied Physics. American Institute of Physics, 2012. https://doi.org/10.1063/1.3678593. ieee: A. P. Higginbotham, J. Cole, M. Blood Forsythe, and D. Hickstein, “Identifying and evaluating organic nonlinear optical materials via molecular moments,” Journal of Applied Physics, vol. 111, no. 3. American Institute of Physics, 2012. ista: Higginbotham AP, Cole J, Blood Forsythe M, Hickstein D. 2012. Identifying and evaluating organic nonlinear optical materials via molecular moments. Journal of Applied Physics. 111(3), 033512. mla: Higginbotham, Andrew P., et al. “Identifying and Evaluating Organic Nonlinear Optical Materials via Molecular Moments.” Journal of Applied Physics, vol. 111, no. 3, 033512, American Institute of Physics, 2012, doi:10.1063/1.3678593. short: A.P. Higginbotham, J. Cole, M. Blood Forsythe, D. Hickstein, Journal of Applied Physics 111 (2012). date_created: 2018-12-11T11:44:35Z date_published: 2012-02-07T00:00:00Z date_updated: 2021-01-12T08:21:50Z day: '07' doi: 10.1063/1.3678593 extern: '1' intvolume: ' 111' issue: '3' language: - iso: eng month: '02' oa_version: None publication: Journal of Applied Physics publication_status: published publisher: American Institute of Physics publist_id: '7963' quality_controlled: '1' status: public title: Identifying and evaluating organic nonlinear optical materials via molecular moments type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 111 year: '2012' ...