Update: 29 September, 2023
This document describes the analysis of complex bacterial cell division proteins using Size Exclusion Chromatography (SEC). SEC is a powerful tool for identifying and isolating proteins from complex systems by separating them based on size in solution. The analysis focuses on FtsZ and ZipA, two essential cell division proteins involved in septum formation in Escherichia coli (E. coli). Crystal structures of the protein monomer units are also shown. FtsZ is a major component of the bacterial septal ring and the first protein to move to the division site during cell fission. It binds other proteins to produce a new cell wall. One of the proteins that interacts with FtsZ is ZipA. Reconstituting ZipA on E. coli lipid membranes provides insights into how membrane attachment regulates the dynamics of FtsZ polymer. The interaction of ZipA with the membrane greatly increases the size of the protein conjugate.
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Publication date: 11 June, 2012
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