PMID:11847116

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Citation

Pichoff, S and Lutkenhaus, J (2002) Unique and overlapping roles for ZipA and FtsA in septal ring assembly in Escherichia coli. EMBO J. 21:685-93

Abstract

ZipA and FtsA are essential division proteins in Escherichia coli that are recruited to the division site by interaction with FtsZ. Utilizing a newly isolated temperature-sensitive mutation in zipA we have more fully characterized the role of ZipA. We confirmed that ZipA is not required for Z ring formation; however, we found that ZipA, like FtsA, is required for recruitment of FtsK and therefore all downstream division proteins. In the absence of FtsA or ZipA Z rings formed; however, in the absence of both, new Z rings were unable to form and preformed Z rings were destabilized. Consistent with this, we found that an FtsZ mutant unable to interact with both ZipA and FtsA was unable to assemble into Z rings. These results demonstrate that ZipA and FtsA are both required for recruitment of additional division proteins to the Z ring, but either one is capable of supporting formation and stabilization of Z rings.

Links

PubMed PMC125861

Keywords

Bacterial Proteins/genetics; Bacterial Proteins/metabolism; Bacterial Proteins/physiology; Base Sequence; Carrier Proteins/genetics; Carrier Proteins/metabolism; Carrier Proteins/physiology; Cell Cycle Proteins/genetics; Cell Cycle Proteins/metabolism; Cell Cycle Proteins/physiology; Cell Division/physiology; DNA Primers; Escherichia coli/cytology; Escherichia coli/physiology; Escherichia coli Proteins/physiology; Microscopy, Fluorescence; Mutation

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