The bacterial cell division proteins ftsA and ftsZ self-organize into dynamic cytoskeletal patterns

Loose M, Mitchison T. 2014. The bacterial cell division proteins ftsA and ftsZ self-organize into dynamic cytoskeletal patterns. Nature Cell Biology. 16(1), 38–46.

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Journal Article | Published
Author
Loose, MartinIST Austria ; Mitchison, Timothy J
Abstract
Bacterial cytokinesis is commonly initiated by the Z-ring, a cytoskeletal structure that assembles at the site of division. Its primary component is FtsZ, a tubulin superfamily GTPase, which is recruited to the membrane by the actin-related protein FtsA. Both proteins are required for the formation of the Z-ring, but if and how they influence each other's assembly dynamics is not known. Here, we reconstituted FtsA-dependent recruitment of FtsZ polymers to supported membranes, where both proteins self-organize into complex patterns, such as fast-moving filament bundles and chirally rotating rings. Using fluorescence microscopy and biochemical perturbations, we found that these large-scale rearrangements of FtsZ emerge from its polymerization dynamics and a dual, antagonistic role of FtsA: recruitment of FtsZ filaments to the membrane and negative regulation of FtsZ organization. Our findings provide a model for the initial steps of bacterial cell division and illustrate how dynamic polymers can self-organize into large-scale structures.
Publishing Year
Date Published
2014-01-01
Journal Title
Nature Cell Biology
Acknowledgement
M.L. is supported by fellowships from EMBO (ALTF 394-2011) and HFSP (LT000466/2012). Cytoskeleton dynamics research in the T.J.M. group is supported by NIH-GM39565.
Volume
16
Issue
1
Page
38 - 46
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Cite this

Loose M, Mitchison T. The bacterial cell division proteins ftsA and ftsZ self-organize into dynamic cytoskeletal patterns. Nature Cell Biology. 2014;16(1):38-46. doi:10.1038/ncb2885
Loose, M., & Mitchison, T. (2014). The bacterial cell division proteins ftsA and ftsZ self-organize into dynamic cytoskeletal patterns. Nature Cell Biology. Nature Publishing Group. https://doi.org/10.1038/ncb2885
Loose, Martin, and Timothy Mitchison. “The Bacterial Cell Division Proteins FtsA and FtsZ Self-Organize into Dynamic Cytoskeletal Patterns.” Nature Cell Biology. Nature Publishing Group, 2014. https://doi.org/10.1038/ncb2885.
M. Loose and T. Mitchison, “The bacterial cell division proteins ftsA and ftsZ self-organize into dynamic cytoskeletal patterns,” Nature Cell Biology, vol. 16, no. 1. Nature Publishing Group, pp. 38–46, 2014.
Loose M, Mitchison T. 2014. The bacterial cell division proteins ftsA and ftsZ self-organize into dynamic cytoskeletal patterns. Nature Cell Biology. 16(1), 38–46.
Loose, Martin, and Timothy Mitchison. “The Bacterial Cell Division Proteins FtsA and FtsZ Self-Organize into Dynamic Cytoskeletal Patterns.” Nature Cell Biology, vol. 16, no. 1, Nature Publishing Group, 2014, pp. 38–46, doi:10.1038/ncb2885.

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