Protein: Cytochrome b-c1 complex subunit 10 (Complex III subunit 10) (Complex III subunit XI) (Ubiquinol-cytochrome c reductase complex 6.4 kDa protein) (Q9CPX8)
Organism: Mus musculus (Mouse)
Function: Component of the ubiquinol-cytochrome c oxidoreductase, a multisubunit transmembrane complex that is part of 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. The cytochrome b-c1 complex catalyzes electron transfer from ubiquinol to cytochrome c, linking this redox reaction to translocation of protons across the mitochondrial inner membrane, with protons being carried across the membrane as hydrogens on the quinol. In the process called Q cycle, 2 protons are consumed from the matrix, 4 protons are released into the intermembrane space and 2 electrons are passed to cytochrome c. QCR10 has a role in CIII assembly and RIP1 stability.
Subcellular location: Mitochondrion inner membrane {ECO:0000269|PubMed:34616041, ECO:0000269|PubMed:38575788}; Single-pass membrane protein {ECO:0000269|PubMed:34616041}.
InterPro domains:
- IPR029027: Single alpha-helix domain superfamily (homologous_superfamily) [1-53]
- IPR015089: Cytochrome b-c1 complex subunit 10 (family) [1-56]
Sequence:
MLSRFLGPRYRELARNWIPTAGMWGTVGAVGLVWATDWRLILDWVPYINGKFKKDD
Predicted GO terms:
Molecular Function (MF): GO:0003674 (molecular function), GO:0003824 (catalytic activity), GO:0016491 (oxidoreductase activity), GO:0009055 (electron transfer activity)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0044237 (cellular metabolic process), GO:0006091 (generation of precursor metabolites and energy), GO:0015980 (energy derivation by oxidation of organic compounds), GO:0022900 (electron transport chain), GO:0022904 (respiratory electron transport chain), GO:0045333 (cellular respiration), GO:0019646 (aerobic electron transport chain), GO:0009060 (aerobic respiration), GO:0042773 (ATP synthesis coupled electron transport), GO:0006120 (mitochondrial electron transport, NADH to ubiquinone), GO:0042775 (mitochondrial ATP synthesis coupled electron transport), GO:0006119 (oxidative phosphorylation)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0031975 (envelope), GO:0016020 (membrane), GO:0005737 (cytoplasm), GO:0031090 (organelle membrane), GO:0031967 (organelle envelope), GO:0005739 (mitochondrion), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0005740 (mitochondrial envelope), GO:0019866 (organelle inner membrane), GO:0043231 (intracellular membrane-bounded organelle), GO:0031966 (mitochondrial membrane), GO:0005743 (mitochondrial inner membrane)