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© Research
Publication : Molecular Microbiology

Localization of FtsL to the Escherichia coli septal ring

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Molecular Microbiology - 31 Jan 1999

Ghigo J.-M., Weiss D.S., Chen J.C., Yarrow J.C., Beckwith J.

Link to Pubmed [PMID] – 10027987

Mol Microbiol. 1999 Jan;31(2):725-37.

In Escherichia coli, nine gene products are known to be essential for assembly of the division septum. One of these, FtsL, is a bitopic membrane protein whose precise function is not understood. Here we use fluorescence microscopy to study the subcellular localization of FtsL, both in a wild-type strain and in a merodiploid strain that expresses a GFP-FtsL fusion protein. We show that FtsL localizes to the cell septum where it forms a ring analogous to the cytoplasmic FtsZ ring. FtsL localization is dependent upon the function of FtsZ, FtsA and FtsQ, but not FtsI. In a reverse approach, we use fusions of green fluorescent protein (GFP) to FtsZ, FtsA and ZipA to show that these proteins localize to the division site in an FtsL-independent fashion. We propose that FtsL is a relatively late recruit to the ring structure that mediates septation.

https://www.ncbi.nlm.nih.gov/pubmed/10027987