126793:PlvioMp1
gene id: 126793:PlvioMp1
uniprot id: Q4G4P1
names: Function
names: Similarity
names: Subcellular Location Annotation
messages: Belongs to the cytochrome c oxidase subunit 3 family.
messages: Component of the cytochrome c oxidase, the last enzyme in the mitochondrial electron transport chain which drives oxidative phosphorylation. The respiratory chain contains 3 multisubunit complexes succinate dehydrogenase (complex II, CII), ubiquinol-cytochrome c oxidoreductase (cytochrome b-c1 complex, complex III, CIII) and cytochrome c oxidase (complex IV, CIV), that cooperate to transfer electrons derived from NADH and succinate to molecular oxygen, creating an electrochemical gradient over the inner membrane that drives transmembrane transport and the ATP synthase. Cytochrome c oxidase is the component of the respiratory chain that catalyzes the reduction of oxygen to water. Electrons originating from reduced cytochrome c in the intermembrane space (IMS) are transferred via the dinuclear copper A center (CU(A)) of subunit 2 and heme A of subunit 1 to the active site in subunit 1, a binuclear center (BNC) formed by heme A3 and copper B (CU(B)). The BNC reduces molecular oxygen to 2 water molecules using 4 electrons from cytochrome c in the IMS and 4 protons from the mitochondrial matrix.
messages: Membrane

126793:PlvioMp2
gene id: 126793:PlvioMp2
uniprot id: Q4G4P0
names: Function
names: Similarity
names: Subcellular Location Annotation
messages: Belongs to the heme-copper respiratory oxidase family.
messages: Component of the cytochrome c oxidase, the last enzyme in the mitochondrial electron transport chain which drives oxidative phosphorylation. The respiratory chain contains 3 multisubunit complexes succinate dehydrogenase (complex II, CII), ubiquinol-cytochrome c oxidoreductase (cytochrome b-c1 complex, complex III, CIII) and cytochrome c oxidase (complex IV, CIV), that cooperate to transfer electrons derived from NADH and succinate to molecular oxygen, creating an electrochemical gradient over the inner membrane that drives transmembrane transport and the ATP synthase. Cytochrome c oxidase is the component of the respiratory chain that catalyzes the reduction of oxygen to water. Electrons originating from reduced cytochrome c in the intermembrane space (IMS) are transferred via the dinuclear copper A center (CU(A)) of subunit 2 and heme A of subunit 1 to the active site in subunit 1, a binuclear center (BNC) formed by heme A3 and copper B (CU(B)). The BNC reduces molecular oxygen to 2 water molecules using 4 electrons from cytochrome c in the IMS and 4 protons from the mitochondrial matrix.
messages: Membrane
messages: Mitochondrion inner membrane

126793:PlvioMp3
gene id: 126793:PlvioMp3
uniprot id: O63696
uniprot id: Q4G4N9
names: Caution
names: Cofactor
names: Function
names: Miscellaneous
names: Similarity
names: Subcellular Location Annotation
names: Subunit
messages: Belongs to the cytochrome b family.
messages: Binds 2 heme b groups non-covalently.
messages: Binds 2 heme groups non-covalently.
messages: Component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex) that is part of the mitochondrial respiratory chain. The b-c1 complex mediates electron transfer from ubiquinol to cytochrome c. Contributes to the generation of a proton gradient across the mitochondrial membrane that is then used for ATP synthesis.
messages: Heme 1 (or BL or b562) is low-potential and absorbs at about 562 nm, and heme 2 (or BH or b566) is high-potential and absorbs at about 566 nm.
messages: Membrane
messages: Mitochondrion inner membrane
messages: The main subunits of complex b-c1 are: cytochrome b, cytochrome c1 and the Rieske protein.
messages: The protein contains an even number of transmembrane helices, fewer than predicted by bioinformatics tools.