Heavy metal effects on Proteus mirabilis Superoxide dismutase production

Proteus mirabilis expressed three Superoxide dismutase activities, which depended on the level of soluble iron and dioxygen in the culture medium. Cadmium and lead decreased production of super oxide dismutase in liquid culture and on solid medium. A fourth super oxide dismutase activity appeared in...

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Veröffentlicht in:	FEMS microbiology letters 1995-10, Vol.132 (3), p.271-276
Hauptverfasser:	Eickhoff, Jennifer, Potts, Elizabeth, Valtos, Joshua, Niederhoffer, Eric C.
Format:	Artikel
Sprache:	eng
Schlagworte:	Bacteriology Biological and medical sciences Cadmium - pharmacology Fundamental and applied biological sciences. Psychology Gene Expression Regulation, Bacterial Heavy metal stress Isoenzymes - biosynthesis Lead - pharmacology Metabolism. Enzymes Microbiology Oxidation-Reduction Proteus mirabilis Proteus mirabilis - drug effects Proteus mirabilis - enzymology Signal Transduction Superoxide dismutase Superoxide Dismutase - biosynthesis
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Zusammenfassung:	Proteus mirabilis expressed three Superoxide dismutase activities, which depended on the level of soluble iron and dioxygen in the culture medium. Cadmium and lead decreased production of super oxide dismutase in liquid culture and on solid medium. A fourth super oxide dismutase activity appeared in extracts from cells grown in the presence of cadmium. These results support the idea of an interaction between toxic metal ions and putative iron‐ and redox‐dependent regulatory systems.
ISSN:	0378-1097 1574-6968
DOI:	10.1111/j.1574-6968.1995.tb07845.x