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. 1993 Feb;175(4):1198–1202. doi: 10.1128/jb.175.4.1198-1202.1993

Function of periplasmic copper-zinc superoxide dismutase in Caulobacter crescentus.

H M Steinman 1
PMCID: PMC193039  PMID: 8432713

Abstract

Caulobacter crescentus is one of a small number of bacterial species that contain a periplasmic copper-zinc superoxide dismutase (CuZnSOD). A C. crescentus mutant, with the CuZnSOD gene interrupted by a promoterless cat gene, was constructed and characterized to analyze CuZnSOD function. Periplasmic SOD does not protect against oxyradical damage in the cytosol or play a major role in maintaining the integrity of the cell envelope. Studies of the effect of sodium citrate on plating efficiency suggest that CuZnSOD protects a periplasmic or membrane function(s) requiring magnesium or calcium.

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Selected References

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