--- _id: '514' abstract: - lang: eng text: 'Orientation in space is represented in specialized brain circuits. Persistent head direction signals are transmitted from anterior thalamus to the presubiculum, but the identity of the presubicular target neurons, their connectivity and function in local microcircuits are unknown. Here, we examine how thalamic afferents recruit presubicular principal neurons and Martinotti interneurons, and the ensuing synaptic interactions between these cells. Pyramidal neuron activation of Martinotti cells in superficial layers is strongly facilitating such that high-frequency head directional stimulation efficiently unmutes synaptic excitation. Martinotti-cell feedback plays a dual role: precisely timed spikes may not inhibit the firing of in-tune head direction cells, while exerting lateral inhibition. Autonomous attractor dynamics emerge from a modelled network implementing wiring motifs and timing sensitive synaptic interactions in the pyramidal - Martinotti-cell feedback loop. This inhibitory microcircuit is therefore tuned to refine and maintain head direction information in the presubiculum.' article_number: '16032' author: - first_name: Jean full_name: Simonnet, Jean last_name: Simonnet - first_name: Mérie full_name: Nassar, Mérie last_name: Nassar - first_name: Federico full_name: Stella, Federico id: 39AF1E74-F248-11E8-B48F-1D18A9856A87 last_name: Stella orcid: 0000-0001-9439-3148 - first_name: Ivan full_name: Cohen, Ivan last_name: Cohen - first_name: Bertrand full_name: Mathon, Bertrand last_name: Mathon - first_name: Charlotte full_name: Boccara, Charlotte id: 3FC06552-F248-11E8-B48F-1D18A9856A87 last_name: Boccara orcid: 0000-0001-7237-5109 - first_name: Richard full_name: Miles, Richard last_name: Miles - first_name: Desdemona full_name: Fricker, Desdemona last_name: Fricker citation: ama: Simonnet J, Nassar M, Stella F, et al. Activity dependent feedback inhibition may maintain head direction signals in mouse presubiculum. Nature Communications. 2017;8. doi:10.1038/ncomms16032 apa: Simonnet, J., Nassar, M., Stella, F., Cohen, I., Mathon, B., Boccara, C. N., … Fricker, D. (2017). Activity dependent feedback inhibition may maintain head direction signals in mouse presubiculum. Nature Communications. Nature Publishing Group. https://doi.org/10.1038/ncomms16032 chicago: Simonnet, Jean, Mérie Nassar, Federico Stella, Ivan Cohen, Bertrand Mathon, Charlotte N. Boccara, Richard Miles, and Desdemona Fricker. “Activity Dependent Feedback Inhibition May Maintain Head Direction Signals in Mouse Presubiculum.” Nature Communications. Nature Publishing Group, 2017. https://doi.org/10.1038/ncomms16032. ieee: J. Simonnet et al., “Activity dependent feedback inhibition may maintain head direction signals in mouse presubiculum,” Nature Communications, vol. 8. Nature Publishing Group, 2017. ista: Simonnet J, Nassar M, Stella F, Cohen I, Mathon B, Boccara CN, Miles R, Fricker D. 2017. Activity dependent feedback inhibition may maintain head direction signals in mouse presubiculum. Nature Communications. 8, 16032. mla: Simonnet, Jean, et al. “Activity Dependent Feedback Inhibition May Maintain Head Direction Signals in Mouse Presubiculum.” Nature Communications, vol. 8, 16032, Nature Publishing Group, 2017, doi:10.1038/ncomms16032. short: J. Simonnet, M. Nassar, F. Stella, I. Cohen, B. Mathon, C.N. Boccara, R. Miles, D. Fricker, Nature Communications 8 (2017). date_created: 2018-12-11T11:46:54Z date_published: 2017-07-01T00:00:00Z date_updated: 2021-01-12T08:01:16Z day: '01' ddc: - '571' department: - _id: JoCs doi: 10.1038/ncomms16032 file: - access_level: open_access checksum: 76d8a2b72a58e56adb410ec37dfa7eee content_type: application/pdf creator: system date_created: 2018-12-12T10:14:31Z date_updated: 2020-07-14T12:46:36Z file_id: '5083' file_name: IST-2018-937-v1+1_2017_Stella_Activity_dependent.pdf file_size: 2948357 relation: main_file file_date_updated: 2020-07-14T12:46:36Z has_accepted_license: '1' intvolume: ' 8' language: - iso: eng month: '07' oa: 1 oa_version: Published Version publication: Nature Communications publication_identifier: issn: - '20411723' publication_status: published publisher: Nature Publishing Group publist_id: '7305' pubrep_id: '937' quality_controlled: '1' scopus_import: 1 status: public title: Activity dependent feedback inhibition may maintain head direction signals in mouse presubiculum 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 user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 8 year: '2017' ... --- _id: '515' abstract: - lang: eng text: 'The oxidative phosphorylation electron transport chain (OXPHOS-ETC) of the inner mitochondrial membrane is composed of five large protein complexes, named CI-CV. These complexes convert energy from the food we eat into ATP, a small molecule used to power a multitude of essential reactions throughout the cell. OXPHOS-ETC complexes are organized into supercomplexes (SCs) of defined stoichiometry: CI forms a supercomplex with CIII2 and CIV (SC I+III2+IV, known as the respirasome), as well as with CIII2 alone (SC I+III2). CIII2 forms a supercomplex with CIV (SC III2+IV) and CV forms dimers (CV2). Recent cryo-EM studies have revealed the structures of SC I+III2+IV and SC I+III2. Furthermore, recent work has shed light on the assembly and function of the SCs. Here we review and compare these recent studies and discuss how they have advanced our understanding of mitochondrial electron transport.' article_type: original author: - first_name: James A full_name: Letts, James A id: 322DA418-F248-11E8-B48F-1D18A9856A87 last_name: Letts orcid: 0000-0002-9864-3586 - first_name: Leonid A full_name: Sazanov, Leonid A id: 338D39FE-F248-11E8-B48F-1D18A9856A87 last_name: Sazanov orcid: 0000-0002-0977-7989 citation: ama: 'Letts JA, Sazanov LA. Clarifying the supercomplex: The higher-order organization of the mitochondrial electron transport chain. Nature Structural and Molecular Biology. 2017;24(10):800-808. doi:10.1038/nsmb.3460' apa: 'Letts, J. A., & Sazanov, L. A. (2017). Clarifying the supercomplex: The higher-order organization of the mitochondrial electron transport chain. Nature Structural and Molecular Biology. Nature Publishing Group. https://doi.org/10.1038/nsmb.3460' chicago: 'Letts, James A, and Leonid A Sazanov. “Clarifying the Supercomplex: The Higher-Order Organization of the Mitochondrial Electron Transport Chain.” Nature Structural and Molecular Biology. Nature Publishing Group, 2017. https://doi.org/10.1038/nsmb.3460.' ieee: 'J. A. Letts and L. A. Sazanov, “Clarifying the supercomplex: The higher-order organization of the mitochondrial electron transport chain,” Nature Structural and Molecular Biology, vol. 24, no. 10. Nature Publishing Group, pp. 800–808, 2017.' ista: 'Letts JA, Sazanov LA. 2017. Clarifying the supercomplex: The higher-order organization of the mitochondrial electron transport chain. Nature Structural and Molecular Biology. 24(10), 800–808.' mla: 'Letts, James A., and Leonid A. Sazanov. “Clarifying the Supercomplex: The Higher-Order Organization of the Mitochondrial Electron Transport Chain.” Nature Structural and Molecular Biology, vol. 24, no. 10, Nature Publishing Group, 2017, pp. 800–08, doi:10.1038/nsmb.3460.' short: J.A. Letts, L.A. Sazanov, Nature Structural and Molecular Biology 24 (2017) 800–808. date_created: 2018-12-11T11:46:54Z date_published: 2017-10-05T00:00:00Z date_updated: 2021-01-12T08:01:17Z day: '05' ddc: - '572' department: - _id: LeSa doi: 10.1038/nsmb.3460 ec_funded: 1 file: - access_level: open_access checksum: 9bc7e8c41b43636dd7566289e511f096 content_type: application/pdf creator: lsazanov date_created: 2019-11-07T12:51:07Z date_updated: 2020-07-14T12:46:36Z file_id: '6993' file_name: 29893_2_merged_1501257589_red.pdf file_size: 4118385 relation: main_file file_date_updated: 2020-07-14T12:46:36Z has_accepted_license: '1' intvolume: ' 24' issue: '10' language: - iso: eng month: '10' oa: 1 oa_version: Submitted Version page: 800 - 808 project: - _id: 2590DB08-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '701309' name: Atomic-Resolution Structures of Mitochondrial Respiratory Chain Supercomplexes (H2020) publication: Nature Structural and Molecular Biology publication_identifier: issn: - '15459993' publication_status: published publisher: Nature Publishing Group publist_id: '7304' quality_controlled: '1' scopus_import: 1 status: public title: 'Clarifying the supercomplex: The higher-order organization of the mitochondrial electron transport chain' type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 24 year: '2017' ... --- _id: '513' abstract: - lang: eng text: 'We present an experimental setup that creates a shear flow with zero mean advection velocity achieved by counterbalancing the nonzero streamwise pressure gradient by moving boundaries, which generates plane Couette-Poiseuille flow. We obtain experimental results in the transitional regime for this flow. Using flow visualization, we characterize the subcritical transition to turbulence in Couette-Poiseuille flow and show the existence of turbulent spots generated by a permanent perturbation. Due to the zero mean advection velocity of the base profile, these turbulent structures are nearly stationary. We distinguish two regions of the turbulent spot: the active turbulent core, which is characterized by waviness of the streaks similar to traveling waves, and the surrounding region, which includes in addition the weak undisturbed streaks and oblique waves at the laminar-turbulent interface. We also study the dependence of the size of these two regions on Reynolds number. Finally, we show that the traveling waves move in the downstream (Poiseuille) direction.' article_number: '043904' author: - first_name: Lukasz full_name: Klotz, Lukasz id: 2C9AF1C2-F248-11E8-B48F-1D18A9856A87 last_name: Klotz orcid: 0000-0003-1740-7635 - first_name: Grégoire M full_name: Lemoult, Grégoire M id: 4787FE80-F248-11E8-B48F-1D18A9856A87 last_name: Lemoult - first_name: Idalia full_name: Frontczak, Idalia last_name: Frontczak - first_name: Laurette full_name: Tuckerman, Laurette last_name: Tuckerman - first_name: José full_name: Wesfreid, José last_name: Wesfreid citation: ama: 'Klotz L, Lemoult GM, Frontczak I, Tuckerman L, Wesfreid J. Couette-Poiseuille flow experiment with zero mean advection velocity: Subcritical transition to turbulence. Physical Review Fluids. 2017;2(4). doi:10.1103/PhysRevFluids.2.043904' apa: 'Klotz, L., Lemoult, G. M., Frontczak, I., Tuckerman, L., & Wesfreid, J. (2017). Couette-Poiseuille flow experiment with zero mean advection velocity: Subcritical transition to turbulence. Physical Review Fluids. American Physical Society. https://doi.org/10.1103/PhysRevFluids.2.043904' chicago: 'Klotz, Lukasz, Grégoire M Lemoult, Idalia Frontczak, Laurette Tuckerman, and José Wesfreid. “Couette-Poiseuille Flow Experiment with Zero Mean Advection Velocity: Subcritical Transition to Turbulence.” Physical Review Fluids. American Physical Society, 2017. https://doi.org/10.1103/PhysRevFluids.2.043904.' ieee: 'L. Klotz, G. M. Lemoult, I. Frontczak, L. Tuckerman, and J. Wesfreid, “Couette-Poiseuille flow experiment with zero mean advection velocity: Subcritical transition to turbulence,” Physical Review Fluids, vol. 2, no. 4. American Physical Society, 2017.' ista: 'Klotz L, Lemoult GM, Frontczak I, Tuckerman L, Wesfreid J. 2017. Couette-Poiseuille flow experiment with zero mean advection velocity: Subcritical transition to turbulence. Physical Review Fluids. 2(4), 043904.' mla: 'Klotz, Lukasz, et al. “Couette-Poiseuille Flow Experiment with Zero Mean Advection Velocity: Subcritical Transition to Turbulence.” Physical Review Fluids, vol. 2, no. 4, 043904, American Physical Society, 2017, doi:10.1103/PhysRevFluids.2.043904.' short: L. Klotz, G.M. Lemoult, I. Frontczak, L. Tuckerman, J. Wesfreid, Physical Review Fluids 2 (2017). date_created: 2018-12-11T11:46:54Z date_published: 2017-04-01T00:00:00Z date_updated: 2021-01-12T08:01:16Z day: '01' department: - _id: BjHo doi: 10.1103/PhysRevFluids.2.043904 intvolume: ' 2' issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1704.02619 month: '04' oa: 1 oa_version: Preprint publication: Physical Review Fluids publication_status: published publisher: American Physical Society publist_id: '7306' quality_controlled: '1' scopus_import: 1 status: public title: 'Couette-Poiseuille flow experiment with zero mean advection velocity: Subcritical transition to turbulence' type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 2 year: '2017' ... --- _id: '520' abstract: - lang: eng text: Cyanobacteria are mostly engineered to be sustainable cell-factories by genetic manipulations alone. Here, by modulating the concentration of allosteric effectors, we focus on increasing product formation without further burdening the cells with increased expression of enzymes. Resorting to a novel 96-well microplate cultivation system for cyanobacteria, and using lactate-producing strains of Synechocystis PCC6803 expressing different l-lactate dehydrogenases (LDH), we titrated the effect of 2,5-anhydro-mannitol supplementation. The latter acts in cells as a nonmetabolizable analogue of fructose 1,6-bisphosphate, a known allosteric regulator of one of the tested LDHs. In this strain (SAA023), we achieved over 2-fold increase of lactate productivity. Furthermore, we observed that as carbon is increasingly deviated during growth toward product formation, there is an increased fixation rate in the population of spontaneous mutants harboring an impaired production pathway. This is a challenge in the development of green cell factories, which may be countered by the incorporation in biotechnological processes of strategies such as the one pioneered here. article_type: letter_note author: - first_name: Wei full_name: Du, Wei last_name: Du - first_name: Andreas full_name: Angermayr, Andreas id: 4677C796-F248-11E8-B48F-1D18A9856A87 last_name: Angermayr orcid: 0000-0001-8619-2223 - first_name: Joeri full_name: Jongbloets, Joeri last_name: Jongbloets - first_name: Douwe full_name: Molenaar, Douwe last_name: Molenaar - first_name: Herwig full_name: Bachmann, Herwig last_name: Bachmann - first_name: Klaas full_name: Hellingwerf, Klaas last_name: Hellingwerf - first_name: Filipe full_name: Branco Dos Santos, Filipe last_name: Branco Dos Santos citation: ama: Du W, Angermayr A, Jongbloets J, et al. Nonhierarchical flux regulation exposes the fitness burden associated with lactate production in Synechocystis sp. PCC6803. ACS Synthetic Biology. 2017;6(3):395-401. doi:10.1021/acssynbio.6b00235 apa: Du, W., Angermayr, A., Jongbloets, J., Molenaar, D., Bachmann, H., Hellingwerf, K., & Branco Dos Santos, F. (2017). Nonhierarchical flux regulation exposes the fitness burden associated with lactate production in Synechocystis sp. PCC6803. ACS Synthetic Biology. American Chemical Society. https://doi.org/10.1021/acssynbio.6b00235 chicago: Du, Wei, Andreas Angermayr, Joeri Jongbloets, Douwe Molenaar, Herwig Bachmann, Klaas Hellingwerf, and Filipe Branco Dos Santos. “Nonhierarchical Flux Regulation Exposes the Fitness Burden Associated with Lactate Production in Synechocystis Sp. PCC6803.” ACS Synthetic Biology. American Chemical Society, 2017. https://doi.org/10.1021/acssynbio.6b00235. ieee: W. Du et al., “Nonhierarchical flux regulation exposes the fitness burden associated with lactate production in Synechocystis sp. PCC6803,” ACS Synthetic Biology, vol. 6, no. 3. American Chemical Society, pp. 395–401, 2017. ista: Du W, Angermayr A, Jongbloets J, Molenaar D, Bachmann H, Hellingwerf K, Branco Dos Santos F. 2017. Nonhierarchical flux regulation exposes the fitness burden associated with lactate production in Synechocystis sp. PCC6803. ACS Synthetic Biology. 6(3), 395–401. mla: Du, Wei, et al. “Nonhierarchical Flux Regulation Exposes the Fitness Burden Associated with Lactate Production in Synechocystis Sp. PCC6803.” ACS Synthetic Biology, vol. 6, no. 3, American Chemical Society, 2017, pp. 395–401, doi:10.1021/acssynbio.6b00235. short: W. Du, A. Angermayr, J. Jongbloets, D. Molenaar, H. Bachmann, K. Hellingwerf, F. Branco Dos Santos, ACS Synthetic Biology 6 (2017) 395–401. date_created: 2018-12-11T11:46:56Z date_published: 2017-03-17T00:00:00Z date_updated: 2021-01-12T08:01:21Z day: '17' department: - _id: ToBo doi: 10.1021/acssynbio.6b00235 external_id: pmid: - '27936615' intvolume: ' 6' issue: '3' language: - iso: eng month: '03' oa_version: None page: 395 - 401 pmid: 1 publication: ACS Synthetic Biology publication_identifier: issn: - '21615063' publication_status: published publisher: American Chemical Society publist_id: '7298' quality_controlled: '1' scopus_import: 1 status: public title: Nonhierarchical flux regulation exposes the fitness burden associated with lactate production in Synechocystis sp. PCC6803 type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 6 year: '2017' ... --- _id: '521' abstract: - lang: eng text: Let X and Y be proper metric spaces. We show that a coarsely n-to-1 map f:X→Y induces an n-to-1 map of Higson coronas. This viewpoint turns out to be successful in showing that the classical dimension raising theorems hold in large scale; that is, if f:X→Y is a coarsely n-to-1 map between proper metric spaces X and Y then asdim(Y)≤asdim(X)+n−1. Furthermore we introduce coarsely open coarsely n-to-1 maps, which include the natural quotient maps via a finite group action, and prove that they preserve the asymptotic dimension. author: - first_name: Kyle full_name: Austin, Kyle last_name: Austin - first_name: Ziga full_name: Virk, Ziga id: 2E36B656-F248-11E8-B48F-1D18A9856A87 last_name: Virk citation: ama: Austin K, Virk Z. Higson compactification and dimension raising. Topology and its Applications. 2017;215:45-57. doi:10.1016/j.topol.2016.10.005 apa: Austin, K., & Virk, Z. (2017). Higson compactification and dimension raising. Topology and Its Applications. Elsevier. https://doi.org/10.1016/j.topol.2016.10.005 chicago: Austin, Kyle, and Ziga Virk. “Higson Compactification and Dimension Raising.” Topology and Its Applications. Elsevier, 2017. https://doi.org/10.1016/j.topol.2016.10.005. ieee: K. Austin and Z. Virk, “Higson compactification and dimension raising,” Topology and its Applications, vol. 215. Elsevier, pp. 45–57, 2017. ista: Austin K, Virk Z. 2017. Higson compactification and dimension raising. Topology and its Applications. 215, 45–57. mla: Austin, Kyle, and Ziga Virk. “Higson Compactification and Dimension Raising.” Topology and Its Applications, vol. 215, Elsevier, 2017, pp. 45–57, doi:10.1016/j.topol.2016.10.005. short: K. Austin, Z. Virk, Topology and Its Applications 215 (2017) 45–57. date_created: 2018-12-11T11:46:56Z date_published: 2017-01-01T00:00:00Z date_updated: 2021-01-12T08:01:21Z day: '01' department: - _id: HeEd doi: 10.1016/j.topol.2016.10.005 intvolume: ' 215' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1608.03954v1 month: '01' oa: 1 oa_version: Submitted Version page: 45 - 57 publication: Topology and its Applications publication_identifier: issn: - '01668641' publication_status: published publisher: Elsevier publist_id: '7299' quality_controlled: '1' status: public title: Higson compactification and dimension raising type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 215 year: '2017' ...