An Arabidopsis Homolog of the Bacterial Cell Division Inhibitor SulA Is Involved in Plastid Division[W]

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An Arabidopsis homolog of the bacterial cell division inhibitor SulA is involved in plastid division.

Plastids have evolved from an endosymbiosis between a cyanobacterial symbiont and a eukaryotic host cell. Their division is mediated both by proteins of the host cell and conserved bacterial division proteins. Here, we identified a new component of the plastid division machinery, Arabidopsis thaliana SulA. Disruption of its cyanobacterial homolog (SSulA) in Synechocystis and overexpression of a...

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Crystal structure of the SOS cell division inhibitor SulA and in complex with FtsZ.

SulA halts cell division in Escherichia coli by binding to the major component of the division machinery FtsZ. We have solved the crystal structure of SulA alone and in complex with FtsZ from Pseudomonas aeruginosa. SulA is expressed when the SOS response is induced. This is a mechanism to inhibit cell division and repair DNA in the event of DNA damage. FtsZ is a tubulin-like protein that forms...

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TPR5 is involved in directional cell division and is essential for the maintenance of meristem cell organization in Arabidopsis thaliana.

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ژورنال

عنوان ژورنال: The Plant Cell

سال: 2004

ISSN: 1532-298X

DOI: 10.1105/tpc.022335