Plasmid-encoded catalase KatA, the main catalase ofPseudomonas fluorescensstrain Cb36
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چکیده
منابع مشابه
Novel nonsense mutation in the katA gene of a catalase-negative Staphylococcus aureus strain☆
We report the first description of a rare catalase-negative strain of Staphylococcus aureus in Chile. This new variant was isolated from blood and synovial tissue samples of a pediatric patient. Sequencing analysis revealed that this catalase-negative strain is related to ST10 strain, which has earlier been described in relation to S. aureus carriers. Interestingly, sequence analysis of the cat...
متن کاملThe 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.
متن کاملCatalase-negative Staphylococcus aureus strain with point mutations in the katA gene.
Methicillin-susceptible catalase-negative Staphylococcus aureus strain UCN61 was isolated from an arterial leg ulcer. The deduced sequence of the structural katA gene for the catalase was 99% identical to those of other S. aureus strains. Two mutations were identified in katA from S. aureus UCN61, including one leading to a substitution of key histidine 58 by a tyrosine.
متن کاملDual promoters of the major catalase (KatA) govern distinct survival strategies of Pseudomonas aeruginosa
KatA is the major catalase required for hydrogen peroxide (H2O2) resistance and acute virulence in Pseudomonas aeruginosa PA14, whose transcription is driven from the promoter (katAp1) located at 155 nucleotide (nt) upstream of the start codon. Here, we identified another promoter (katAp2), the +1 of which was mapped at the 51 nt upstream of the start codon, which was responsible for the basal ...
متن کاملIs Root Catalase a Bifunctional Catalase-Peroxidase?
Plant catalases exhibit spatial and temporal distribution of their activity. Moreover, except from the typical monofunctional catalase, a bifunctional catalase-peroxidase has been reported. The aim of this study was to investigate whether the leaf and root catalases from six different plant species (Lactuca sativa, Cichorium endivia, Apium graveolens, Petroselinum crispum, Lycopersicon esculent...
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ژورنال
عنوان ژورنال: FEMS Microbiology Letters
سال: 2001
ISSN: 0378-1097,1574-6968
DOI: 10.1111/j.1574-6968.2001.tb10721.x