Roles of Fe superoxide dismutase and catalase in resistance of Campylobacter coli to freeze-thaw stress.
We demonstrated that oxidative stress plays a role in freeze-thaw-induced killing of Campylobacter coli following analysis of mutants deficient in key antioxidant functions. Superoxide anions, but not H(2)O(2), were formed during the freeze-thaw process. However, a failure to detoxify superoxide anions may lead to spontaneous disproportionation of the radicals to H(2)O(2).
Stead
D
D
School of Biological Sciences, University of Surrey, Guildford, GU2 7XH, United Kingdom.
Park
S F
SF
D017000:Campylobacter coli / Q000201:enzymology* / Q000235:genetics / Q000502:physiology*; D002374:Catalase / Q000235:genetics / Q000378:metabolism*; D015169:Colony Count, Microbial; D005615:Freezing; D009154:Mutation; D013482:Superoxide Dismutase / Q000235:genetics / Q000378:metabolism*
D002374:Catalase; D013482:Superoxide Dismutase