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1.19.1.1
physiological function
Escherichia coli cells deficient in the soxRS-induced ferredoxin (flavodoxin)-NADP(H) reductase FPR, display abnormal sensitivity to methyl viologen. Neither bacteriostatic effects nor inactivation of oxidant-sensitive hydrolyases can be detected in mutant cells exposed to methyl viologen. FPR inactivation does not affect the methyl viologen-driven soxRS response, FPR overexpression leads to enhanced stimulation of the regulon, with concomitant oxidation of the NADPH pool. Accumulation of a site-directed FPR mutant that uses NAD(H) instead of NADP(H) has no effect on soxRS induction and fails to protect FPR deficient cells from methyl viologen toxicity
738513
1.19.1.1
physiological function
flavodoxin, flavodoxin reductase and NADPH function during the activation of the anaerobic ribonucleotide reductase
737584
1.19.1.1
physiological function
insertion mutants lacking a functional enzyme do not require methionine and grow well anaerobically, but they show increased sensitivity to paraquat
738503
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