Induction of superoxide dismutase in Escherichia coli by heat shock
- PMID: 3554246
- PMCID: PMC304730
- DOI: 10.1073/pnas.84.9.2723
Induction of superoxide dismutase in Escherichia coli by heat shock
Abstract
Exposure of midlogarithmic-phase cultures of Escherichia coli B to 48 degrees C for 1 hr elicited an induction of the manganese-containing superoxide dismutase (MnSOD), which became more pronounced during 1 hr of recovery at 37 degrees C. This induction required protein biosynthesis, since it was suppressed by chloramphenicol. Induction of MnSOD appeared to be a response to a heat-mediated increase in O2- production because it was dioxygen-dependent and because heating to 48 degrees C doubled the cyanide-resistant fraction of the total respiration.
References
Publication types
MeSH terms
Substances
LinkOut - more resources
Full Text Sources
