A0A8H7QEU7 · A0A8H7QEU7_9FUNG
- ProteinCytochrome c oxidase subunit 1
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids868 (go to sequence)
- Protein existenceInferred from homology
- Annotation score3/5
Function
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.
Catalytic activity
- 4 Fe(II)-[cytochrome c] + 8 H+(in) + O2 = 4 Fe(III)-[cytochrome c] + 4 H+(out) + 2 H2O
4 RHEA-COMP:10350 + 8 H+ (in)CHEBI:15378+ CHEBI:15379 = 4 RHEA-COMP:14399 + 4 H+ (out)CHEBI:15378+ 2 CHEBI:15377
Pathway
Energy metabolism; oxidative phosphorylation.
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | mitochondrial respiratory chain complex IV | |
Molecular Function | cytochrome-c oxidase activity | |
Molecular Function | DNA binding | |
Molecular Function | endonuclease activity | |
Molecular Function | heme binding | |
Molecular Function | metal ion binding | |
Biological Process | electron transport coupled proton transport | |
Biological Process | mitochondrial electron transport, cytochrome c to oxygen |
Keywords
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameCytochrome c oxidase subunit 1
- EC number
Gene names
Organism names
- Organism
- Strain
- Taxonomic lineageEukaryota > Fungi > Fungi incertae sedis > Mucoromycota > Mucoromycotina > Mucoromycetes > Mucorales > Mucorineae > Mucoraceae > Mucor
Accessions
- Primary accessionA0A8H7QEU7
Proteomes
Subcellular Location
UniProt Annotation
GO Annotation
Membrane ; Multi-pass membrane protein
Mitochondrion inner membrane ; Multi-pass membrane protein
Features
Showing features for transmembrane.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Transmembrane | 282-308 | Helical | ||||
Sequence: LAIFSLHLSGISSMLGAMNFITTIINM | ||||||
Transmembrane | 320-347 | Helical | ||||
Sequence: LFVWAVLITAVLLLLSLPVLAGGITMLL | ||||||
Transmembrane | 367-391 | Helical | ||||
Sequence: LYQHLFWFFGHPEVYILIIPGFGIV | ||||||
Transmembrane | 403-427 | Helical | ||||
Sequence: IFGYLGMVYAMLSIGVLGFIVWSHH | ||||||
Transmembrane | 439-462 | Helical | ||||
Sequence: AYFTAATMIIAVPTGIKIFSWLAT | ||||||
Transmembrane | 474-492 | Helical | ||||
Sequence: MLFALGFLALFTLGGLTVY | ||||||
Transmembrane | 805-824 | Helical | ||||
Sequence: FHYVLSMGAVFALFSAFYYW | ||||||
Transmembrane | 836-854 | Helical | ||||
Sequence: LLGQIHFWSLFIGVNLTFF |
Keywords
- Cellular component
PTM/Processing
Features
Showing features for signal, chain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Signal | 1-37 | |||||
Sequence: MNWFVPLMIGAPDMAFPRLNNISFWLLPPSLILLVAS | ||||||
Chain | PRO_5034932080 | 38-868 | Cytochrome c oxidase subunit 1 | |||
Sequence: AFVENGAGTGWTVENGKQSPISNNRAIKHHSMRETPLFGKNYSSIVNPLWINDKLAVKMFLTRGQSAWDKLNYSTLSHQRLNVMQPNDEWFLQWLVGMTDGDGSFSILRQGDKLLEDLKSTKPAESYISPAWDGVTLPLADANEAHKVMSKPWLVGFVEAEGSFYLVSKDAKRIVHGFGVTQKLDVVVLEAIRHILHISTKVVFKKKYNHHMIDTTNSRAISNVSEYFLNTMKGIASHSGGSVDLAIFSLHLSGISSMLGAMNFITTIINMRAPGMSFHKMPLFVWAVLITAVLLLLSLPVLAGGITMLLTDRNFNTSFYEPAGGGDPLLYQHLFWFFGHPEVYILIIPGFGIVSHVVSTFCGKPIFGYLGMVYAMLSIGVLGFIVWSHHMYTVGLDVDTRAYFTAATMIIAVPTGIKIFSWLATLYGGSIRFTTPMLFALGFLALFTLGGLTVYSDFKEEKSNILSDNRSKAGIYILYNNATDSYYVGSSSNIARRMSSYFSLAYLNHPKNKNMIICRALLKYDFAPFSLMVVEYCSISNLQEREQYWMDILNPEYNVLKHAFSSQGYKHTPESIKLMSQSAVSRVHSEETKESISKATAKENNPFFGKTHTAETLAQIVLSKSLGLVYLYNEYKELTCIFSSLTSFAKLAESNNNSIKRFIDSQDLFRGNWYISYNLLKDSDTPIIEDHTTDEYKELIQTIIESKYDGVIEAQKALGISHETIKKYCKTAELIKYNYLKVDNFGVMLANASIDVALHDTYYVVAHFHYVLSMGAVFALFSAFYYWIGKITGKTYNELLGQIHFWSLFIGVNLTFFPQHMLGQLKLGLLK |
Structure
Family & Domains
Features
Showing features for domain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Domain | 1-868 | Cytochrome oxidase subunit I profile | ||||
Sequence: MNWFVPLMIGAPDMAFPRLNNISFWLLPPSLILLVASAFVENGAGTGWTVENGKQSPISNNRAIKHHSMRETPLFGKNYSSIVNPLWINDKLAVKMFLTRGQSAWDKLNYSTLSHQRLNVMQPNDEWFLQWLVGMTDGDGSFSILRQGDKLLEDLKSTKPAESYISPAWDGVTLPLADANEAHKVMSKPWLVGFVEAEGSFYLVSKDAKRIVHGFGVTQKLDVVVLEAIRHILHISTKVVFKKKYNHHMIDTTNSRAISNVSEYFLNTMKGIASHSGGSVDLAIFSLHLSGISSMLGAMNFITTIINMRAPGMSFHKMPLFVWAVLITAVLLLLSLPVLAGGITMLLTDRNFNTSFYEPAGGGDPLLYQHLFWFFGHPEVYILIIPGFGIVSHVVSTFCGKPIFGYLGMVYAMLSIGVLGFIVWSHHMYTVGLDVDTRAYFTAATMIIAVPTGIKIFSWLATLYGGSIRFTTPMLFALGFLALFTLGGLTVYSDFKEEKSNILSDNRSKAGIYILYNNATDSYYVGSSSNIARRMSSYFSLAYLNHPKNKNMIICRALLKYDFAPFSLMVVEYCSISNLQEREQYWMDILNPEYNVLKHAFSSQGYKHTPESIKLMSQSAVSRVHSEETKESISKATAKENNPFFGKTHTAETLAQIVLSKSLGLVYLYNEYKELTCIFSSLTSFAKLAESNNNSIKRFIDSQDLFRGNWYISYNLLKDSDTPIIEDHTTDEYKELIQTIIESKYDGVIEAQKALGISHETIKKYCKTAELIKYNYLKVDNFGVMLANASIDVALHDTYYVVAHFHYVLSMGAVFALFSAFYYWIGKITGKTYNELLGQIHFWSLFIGVNLTFFPQHMLGQLKLGLLK | ||||||
Domain | 508-596 | GIY-YIG | ||||
Sequence: SKAGIYILYNNATDSYYVGSSSNIARRMSSYFSLAYLNHPKNKNMIICRALLKYDFAPFSLMVVEYCSISNLQEREQYWMDILNPEYNV |
Sequence similarities
Belongs to the heme-copper respiratory oxidase family.
To endonucleases of group I introns of fungi and phage.
Keywords
- Domain
Family and domain databases
Sequence
- Sequence statusComplete
- Length868
- Mass (Da)97,654
- Last updated2022-01-19 v1
- Checksum4F8C5C938C635432
Keywords
- Technical term