Probable ubiquinol-cytochrome C reductase QcrC (cytochrome C subunit); Cytochrome b subunit of the cytochrome bc1 complex, an essential component of the respiratory electron transport chain required for ATP synthesis. The bc1 complex catalyzes the oxidation of ubiquinol and the reduction of cytochrome c in the respiratory chain. The bc1 complex operates through a Q-cycle mechanism that couples electron transfer to generation of the proton gradient that drives ATP synthesis.

Probable rieske iron-sulfur protein QcrA; Iron-sulfur subunit of the cytochrome bc1 complex, an essential component of the respiratory electron transport chain required for ATP synthesis. The bc1 complex catalyzes the oxidation of menaquinol and the reduction of cytochrome c in the respiratory chain. The bc1 complex operates through a Q-cycle mechanism that couples electron transfer to generation of the proton gradient that drives ATP synthesis.

Probable ubiquinol-cytochrome C reductase QcrB (cytochrome B subunit); Cytochrome b subunit of the cytochrome bc1 complex, an essential component of the respiratory electron transport chain required for ATP synthesis. The bc1 complex catalyzes the oxidation of ubiquinol and the reduction of cytochrome c in the respiratory chain. The bc1 complex operates through a Q-cycle mechanism that couples electron transfer to generation of the proton gradient that drives ATP synthesis. The cytochrome b subunit contains two ubiquinol reactive sites: the oxidation (QP) site and the reduction (QN) site.

Possible conserved integral membrane protein; Part of cytochrome c oxidase, its function is unknown. Belongs to the cytochrome c oxidase bacterial subunit CtaF family.

Probable transmembrane cytochrome C oxidase (subunit II) CtaC; Subunits I and II form the functional core of the enzyme complex. Electrons originating in cytochrome c are transferred via heme a and Cu(A) to the binuclear center formed by heme a3 and Cu(B) (By similarity).

Rv2876, (MTCY274.07), len: 104 aa. Possible conserved transmembrane protein, equivalent (but longer 16 aa) to Q9CBU2|ML1584 possible conserved membrane protein from Mycobacterium leprae (84 aa), FASTA scores: opt: 444,E(): 8.3e-26, (73.85% identity in 88 aa overlap). A core mycobacterial gene; conserved in mycobacterial strains (See Marmiesse et al., 2004).

Probable cytochrome C oxidase polypeptide I CtaD (cytochrome AA3 subunit 1); Cytochrome c oxidase is the component of the respiratory chain that catalyzes the reduction of oxygen to water. Subunits 1-3 form the functional core of the enzyme complex. CO I is the catalytic subunit of the enzyme. Electrons originating in cytochrome c are transferred via the copper A center of subunit 2 and heme A of subunit 1 to the bimetallic center formed by heme A3 and copper B (By similarity).

Probable ATP synthase a chain AtpB (protein 6); Key component of the proton channel; it plays a direct role in the translocation of protons across the membrane. Belongs to the ATPase A chain family.

Rv0863, (MTV043.56), len: 93 aa. Conserved hypothetical protein, highly similar to NP_302418.1|NC_002677 conserved hypothetical protein from Mycobacterium leprae (74 aa). Also weakly similar in part to U82598|ECU82598_135 hypothetical protein from Escherichia coli, FASTA scores: (32.4% identity in 71 aa overlap); and M74011|YEPYSCOP_8 hypothetical protein from Yersinia enterocolitica (165 aa), FASTA scores: (38.6 identity in 57 aa overlap). A core mycobacterial gene; conserved in mycobacterial strains (See Marmiesse et al.,2004).