The katA catalase gene is regulated by OxyR in both free-living and symbiotic Sinorhizobium meliloti.
The characterization of an oxyR insertion mutant provides evidences that katA, which encodes the unique H2O2-inducible HPII catalase, is regulated by OxyR not only in free-living Sinorhizobium meliloti but also in symbiotic S. meliloti. Moreover, oxyR is expressed independently of exogenous H2O2 and downregulates its own expression in S. meliloti.
Jamet
Alexandre
A
Laboratoire Interactions Plantes-Microorganismes et Santé Végétele, UMR, INRA, Université de Nice Sophia-Antipolis, CNRS, 400 Route des Chappes, BP 167, F-06903 Sophia Antipolis Cedex, France.
Kiss
Ernö
E
Batut
Jacques
J
Puppo
Alain
A
Hérouart
Didier
D
D001426:Bacterial Proteins / Q000235:genetics*; D001483:Base Sequence; D002374:Catalase / Q000235:genetics*; D004268:DNA-Binding Proteins / Q000502:physiology*; D015964:Gene Expression Regulation, Bacterial; D006861:Hydrogen Peroxide / Q000494:pharmacology; D000455:Medicago sativa / Q000382:microbiology; D046913:Medicago truncatula / Q000382:microbiology; D008969:Molecular Sequence Data; D012097:Repressor Proteins / Q000502:physiology*; D016962:Sinorhizobium meliloti / Q000235:genetics*; D013559:Symbiosis; D014157:Transcription Factors / Q000502:physiology*
D001426:Bacterial Proteins; D004268:DNA-Binding Proteins; D012097:Repressor Proteins; D014157:Transcription Factors; D006861:Hydrogen Peroxide; D002374:Catalase