Flavodoxin and rubredoxin from Desulphovibrio salexigens

A flavodoxin and a rubredoxin have been isolated from the sulfate-reducing bacterium Desulphovibrio salexigens (strain British Guiana, NICB 8403). Their amino acid composition and spectral characteristics did not differ markedly from the homologous proteins presented in other Desulphovibrio spp. Flavodoxin was shown to be active in the electron transport of the sulfite reductase system.