--- _id: '7387' abstract: - lang: eng text: Most bacteria accomplish cell division with the help of a dynamic protein complex called the divisome, which spans the cell envelope in the plane of division. Assembly and activation of this machinery are coordinated by the tubulin-related GTPase FtsZ, which was found to form treadmilling filaments on supported bilayers in vitro1, as well as in live cells, in which filaments circle around the cell division site2,3. Treadmilling of FtsZ is thought to actively move proteins around the division septum, thereby distributing peptidoglycan synthesis and coordinating the inward growth of the septum to form the new poles of the daughter cells4. However, the molecular mechanisms underlying this function are largely unknown. Here, to study how FtsZ polymerization dynamics are coupled to downstream proteins, we reconstituted part of the bacterial cell division machinery using its purified components FtsZ, FtsA and truncated transmembrane proteins essential for cell division. We found that the membrane-bound cytosolic peptides of FtsN and FtsQ co-migrated with treadmilling FtsZ–FtsA filaments, but despite their directed collective behaviour, individual peptides showed random motion and transient confinement. Our work suggests that divisome proteins follow treadmilling FtsZ filaments by a diffusion-and-capture mechanism, which can give rise to a moving zone of signalling activity at the division site. acknowledgement: We acknowledge members of the Loose laboratory at IST Austria for helpful discussions—in particular, P. Caldas for help with the treadmilling analysis, M. Jimenez, A. Raso and N. Ropero for providing Alexa Fluor 488- and Alexa Fluor 647-labelled FtsA for the MST and analytical ultracentrifugation experiments. We thank C. You for providing the DODA-tris-NTA phospholipids, as well as J. Piehler and C. Richter (Department of Biology, University of Osnabruck, Germany) for the SLIMfast single-molecule tracking software and help with the confinement analysis. We thank J. Errington and H. Murray (both at Newcastle University, UK) for critical reading of the manuscript, and J. Brugués (MPI-CBG and MPI-PKS, Dresden, Germany) for help with the MATLAB programming and reading of the manuscript. This work was supported by the European Research Council through grant ERC-2015-StG-679239 to M.L. and grants HFSP LT 000824/2016-L4 and EMBO ALTF 1163-2015 to N.B., a grant from the Ministry of Economy and Competitiveness of the Spanish Government (BFU2016-75471-C2-1-P) to C.A. and G.R., and a Wellcome Trust Senior Investigator award (101824/Z/13/Z) and a grant from the BBSRC (BB/R017409/1) to W.V. article_processing_charge: No article_type: letter_note author: - first_name: Natalia S. full_name: Baranova, Natalia S. id: 38661662-F248-11E8-B48F-1D18A9856A87 last_name: Baranova orcid: 0000-0002-3086-9124 - first_name: Philipp full_name: Radler, Philipp id: 40136C2A-F248-11E8-B48F-1D18A9856A87 last_name: Radler orcid: '0000-0001-9198-2182 ' - first_name: Víctor M. full_name: Hernández-Rocamora, Víctor M. last_name: Hernández-Rocamora - first_name: Carlos full_name: Alfonso, Carlos last_name: Alfonso - first_name: Maria D full_name: Lopez Pelegrin, Maria D id: 319AA9CE-F248-11E8-B48F-1D18A9856A87 last_name: Lopez Pelegrin - first_name: Germán full_name: Rivas, Germán last_name: Rivas - first_name: Waldemar full_name: Vollmer, Waldemar last_name: Vollmer - first_name: Martin full_name: Loose, Martin id: 462D4284-F248-11E8-B48F-1D18A9856A87 last_name: Loose orcid: 0000-0001-7309-9724 citation: ama: Baranova NS, Radler P, Hernández-Rocamora VM, et al. Diffusion and capture permits dynamic coupling between treadmilling FtsZ filaments and cell division proteins. Nature Microbiology. 2020;5:407-417. doi:10.1038/s41564-019-0657-5 apa: Baranova, N. S., Radler, P., Hernández-Rocamora, V. M., Alfonso, C., Lopez Pelegrin, M. D., Rivas, G., … Loose, M. (2020). Diffusion and capture permits dynamic coupling between treadmilling FtsZ filaments and cell division proteins. Nature Microbiology. Springer Nature. https://doi.org/10.1038/s41564-019-0657-5 chicago: Baranova, Natalia S., Philipp Radler, Víctor M. Hernández-Rocamora, Carlos Alfonso, Maria D Lopez Pelegrin, Germán Rivas, Waldemar Vollmer, and Martin Loose. “Diffusion and Capture Permits Dynamic Coupling between Treadmilling FtsZ Filaments and Cell Division Proteins.” Nature Microbiology. Springer Nature, 2020. https://doi.org/10.1038/s41564-019-0657-5. ieee: N. S. Baranova et al., “Diffusion and capture permits dynamic coupling between treadmilling FtsZ filaments and cell division proteins,” Nature Microbiology, vol. 5. Springer Nature, pp. 407–417, 2020. ista: Baranova NS, Radler P, Hernández-Rocamora VM, Alfonso C, Lopez Pelegrin MD, Rivas G, Vollmer W, Loose M. 2020. Diffusion and capture permits dynamic coupling between treadmilling FtsZ filaments and cell division proteins. Nature Microbiology. 5, 407–417. mla: Baranova, Natalia S., et al. “Diffusion and Capture Permits Dynamic Coupling between Treadmilling FtsZ Filaments and Cell Division Proteins.” Nature Microbiology, vol. 5, Springer Nature, 2020, pp. 407–17, doi:10.1038/s41564-019-0657-5. short: N.S. Baranova, P. Radler, V.M. Hernández-Rocamora, C. Alfonso, M.D. Lopez Pelegrin, G. Rivas, W. Vollmer, M. Loose, Nature Microbiology 5 (2020) 407–417. date_created: 2020-01-28T16:14:41Z date_published: 2020-01-20T00:00:00Z date_updated: 2023-10-06T12:22:38Z day: '20' department: - _id: MaLo doi: 10.1038/s41564-019-0657-5 ec_funded: 1 external_id: isi: - '000508584700007' pmid: - '31959972' intvolume: ' 5' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: http://europepmc.org/article/PMC/7048620 month: '01' oa: 1 oa_version: Submitted Version page: 407-417 pmid: 1 project: - _id: 2595697A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '679239' name: Self-Organization of the Bacterial Cell - _id: 259B655A-B435-11E9-9278-68D0E5697425 grant_number: LT000824/2016 name: Reconstitution of bacterial cell wall sythesis - _id: 2596EAB6-B435-11E9-9278-68D0E5697425 grant_number: ALTF 2015-1163 name: Synthesis of bacterial cell wall publication: Nature Microbiology publication_identifier: issn: - 2058-5276 publication_status: published publisher: Springer Nature quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/little-cell-big-cover-story/ record: - id: '14280' relation: dissertation_contains status: public scopus_import: '1' status: public title: Diffusion and capture permits dynamic coupling between treadmilling FtsZ filaments and cell division proteins type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 5 year: '2020' ... --- _id: '6506' abstract: - lang: eng text: How does environmental complexity affect the evolution of single genes? Here, we measured the effects of a set of Bacillus subtilis glutamate dehydrogenase mutants across 19 different environments—from phenotypically homogeneous single-cell populations in liquid media to heterogeneous biofilms, plant roots and soil populations. The effects of individual gene mutations on organismal fitness were highly reproducible in liquid cultures. However, 84% of the tested alleles showed opposing fitness effects under different growth conditions (sign environmental pleiotropy). In colony biofilms and soil samples, different alleles dominated in parallel replica experiments. Accordingly, we found that in these heterogeneous cell populations the fate of mutations was dictated by a combination of selection and drift. The latter relates to programmed prophage excisions that occurred during biofilm development. Overall, for each condition, a wide range of glutamate dehydrogenase mutations persisted and sometimes fixated as a result of the combined action of selection, pleiotropy and chance. However, over longer periods and in multiple environments, nearly all of this diversity would be lost—across all the environments and conditions that we tested, the wild type was the fittest allele. article_processing_charge: No article_type: original author: - first_name: Lianet full_name: Noda-García, Lianet last_name: Noda-García - first_name: Dan full_name: Davidi, Dan last_name: Davidi - first_name: Elisa full_name: Korenblum, Elisa last_name: Korenblum - first_name: Assaf full_name: Elazar, Assaf last_name: Elazar - first_name: Ekaterina full_name: Putintseva, Ekaterina id: 2EF67C84-F248-11E8-B48F-1D18A9856A87 last_name: Putintseva - first_name: Asaph full_name: Aharoni, Asaph last_name: Aharoni - first_name: Dan S. full_name: Tawfik, Dan S. last_name: Tawfik citation: ama: Noda-García L, Davidi D, Korenblum E, et al. Chance and pleiotropy dominate genetic diversity in complex bacterial environments. Nature Microbiology. 2019;4(7):1221–1230. doi:10.1038/s41564-019-0412-y apa: Noda-García, L., Davidi, D., Korenblum, E., Elazar, A., Putintseva, E., Aharoni, A., & Tawfik, D. S. (2019). Chance and pleiotropy dominate genetic diversity in complex bacterial environments. Nature Microbiology. Springer Nature. https://doi.org/10.1038/s41564-019-0412-y chicago: Noda-García, Lianet, Dan Davidi, Elisa Korenblum, Assaf Elazar, Ekaterina Putintseva, Asaph Aharoni, and Dan S. Tawfik. “Chance and Pleiotropy Dominate Genetic Diversity in Complex Bacterial Environments.” Nature Microbiology. Springer Nature, 2019. https://doi.org/10.1038/s41564-019-0412-y. ieee: L. Noda-García et al., “Chance and pleiotropy dominate genetic diversity in complex bacterial environments,” Nature Microbiology, vol. 4, no. 7. Springer Nature, pp. 1221–1230, 2019. ista: Noda-García L, Davidi D, Korenblum E, Elazar A, Putintseva E, Aharoni A, Tawfik DS. 2019. Chance and pleiotropy dominate genetic diversity in complex bacterial environments. Nature Microbiology. 4(7), 1221–1230. mla: Noda-García, Lianet, et al. “Chance and Pleiotropy Dominate Genetic Diversity in Complex Bacterial Environments.” Nature Microbiology, vol. 4, no. 7, Springer Nature, 2019, pp. 1221–1230, doi:10.1038/s41564-019-0412-y. short: L. Noda-García, D. Davidi, E. Korenblum, A. Elazar, E. Putintseva, A. Aharoni, D.S. Tawfik, Nature Microbiology 4 (2019) 1221–1230. date_created: 2019-05-29T13:03:30Z date_published: 2019-07-01T00:00:00Z date_updated: 2023-08-28T08:39:47Z day: '01' department: - _id: FyKo doi: 10.1038/s41564-019-0412-y external_id: isi: - '000480348200017' intvolume: ' 4' isi: 1 issue: '7' language: - iso: eng main_file_link: - open_access: '1' url: https://www.biorxiv.org/content/10.1101/340828v2 month: '07' oa: 1 oa_version: Preprint page: 1221–1230 publication: Nature Microbiology publication_identifier: issn: - 2058-5276 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Chance and pleiotropy dominate genetic diversity in complex bacterial environments type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 4 year: '2019' ...