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Microbiology. 1997 Mar;143 ( Pt 3):971-8.

Characterization of the ftsH gene of Bacillus subtilis.

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Department of Microbiology, University of Pennsylvania School of Medicine, Philadelphia 19104-6076, USA.


Members of the AAA-protein family are found in both prokaryotes and eukaryotes. These ATPases are involved in a number of diverse activities ranging from protein secretion to cell cycle control. This paper reports the functional analysis of the Bacillus subtilis ftsH gene, which encodes a member of this protein family. In cells containing reduced levels of a truncated FtsH protein cell growth was impaired under certain nutritional conditions. In a hypersaline environment FtsH was required in increased amounts for the cells' recovery from osmotic stress. In the absence of FtsH the abundance of several of the major penicillin-binding proteins (PBP2A and 2B) in the cytoplasmic membrane was affected. Lastly, it has been established that FtsH is required for entry into the developmental life cycle.

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