GTPase activity–coupled treadmilling of the bacterial tubulin FtsZ organizes septal cell wall synthesis
Johns Hopkins University · Johns Hopkins Medicine · +1 more institution
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Abstract
Cells, FtsZ exhibits dynamic treadmilling predominantly determined by its guanosine triphosphatase activity. The treadmilling dynamics direct the processive movement of the septal cell wall synthesis machinery but do not limit the rate of septal synthesis. In FtsZ mutants with severely reduced treadmilling, the spatial distribution of septal synthesis and the molecular composition and ultrastructure of the septal cell wall were substantially altered. Thus, FtsZ treadmilling provides a mechanism for achieving uniform septal cell wall synthesis to enable correct polar morphology.
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6Topics & keywords
Topics
Keywords
- Treadmilling
- FtsZ
- Tubulin
- GTPase
- Cell biology
- Chemistry
- Microtubule
- Cell division
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