Open AccessCoordination of Ubiquinol Oxidase and Cytochrome cbb 3 Oxidase Expression by Multiple Regulators in Rhodobacter capsulatus
Author(s) -
Danielle L. Swem,
Carl E. Bauer
Publication year - 2002
Publication title -
journal of bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.652
H-Index - 246
eISSN - 1067-8832
pISSN - 0021-9193
DOI - 10.1128/jb.184.10.2815-2820.2002
Subject(s) - rhodobacter , biology , biochemistry , cytochrome , oxidase test , cytochrome c oxidase , ubiquinol , mutant , microbiology and biotechnology , cytochrome c , gene , enzyme , coenzyme q – cytochrome c reductase , mitochondrion
Rhodobacter capsulatus utilizes two terminal oxidases for aerobic respiration, cytochrome cbb(3) and ubiquinol oxidase. To determine the transcription factors involved in terminal oxidase expression, ccoN-lacZ and cydA-lacZ protein fusions were assayed in a variety of regulatory mutants. The results of this and previous studies indicate that cytochrome cbb(3) expression is controlled by regB-regA, fnrL, and hvrA and that ubiquinol oxidase expression is controlled by regB-regA, fnrL, hvrA, crtJ, and aerR.