Protein Name:
Cytochrome c oxidase subunit 2
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UniprotKB/SwissProt ID: P00403 (P00403)
Gene Name:
MT-CO2
Organism: Homo sapiens (Human)
Function: 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
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Mitochondrion inner membrane
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Graphical Visualization of S-nitrosylation Sites:
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The S-nitrosylation sites of P00403
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| No. |
Position |
S-nitrosylated Peptide |
Secondary Structure of S-nitrosylated Peptide |
Solvent Accessibility of nitrosylated Site |
PubMed ID |
| 1 |
196 |
ATRPGVYYGQ C SEICGANHSF |
CCCHHHHCCC C CCCHHHHHHH |
3.24% |
22178444
15561762
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| 2 |
200 |
GVYYGQCSEI C GANHSFMPIV |
CCCHHHHCCC C CCCHHHHHHH |
3.55% |
22178444
15561762
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