Sulfide-quinone reductase from Rhodobacter capsulatus: requirement for growth, periplasmic localization, and extension of gene sequence analysis.

ABSTRACT: The entire sequence of the 3.5-kb fragment of genomic DNA from Rhodobacter capsulatus which contains the sqr gene and a second complete and two further partial open reading frames has been determined. A correction of the previously published sqr gene sequence (M. Schütz, Y. Shahak, E. Padan, and G. Hauska, J. Biol. Chem. 272:9890-9894, 1997) which in the deduced primary structure of the sulfide-quinone reductase changes four positive into four negative charges and the number of amino acids from 425 to 427 was necessary. The correction has no further bearing on the former sequence analysis. Deletion and interruption strains document that sulfide-quinone reductase is essential for photoautotrophic growth on sulfide. The sulfide-oxidizing enzyme is involved in energy conversion, not in detoxi

SUBMITTER: Schutz M 

PROVIDER: S-EPMC103789 | biostudies-literature | 1999 Oct

REPOSITORIES: biostudies-literature