ID COX1_VANPO Reviewed; 534 AA. AC A6H4Q6; DT 16-DEC-2008, integrated into UniProtKB/Swiss-Prot. DT 24-JUL-2007, sequence version 1. DT 22-FEB-2023, entry version 78. DE RecName: Full=Cytochrome c oxidase subunit 1; DE EC=7.1.1.9; DE AltName: Full=Cytochrome c oxidase polypeptide I; GN Name=COX1; ORFNames=VapofMp06; OS Vanderwaltozyma polyspora (strain ATCC 22028 / DSM 70294 / BCRC 21397 / CBS OS 2163 / NBRC 10782 / NRRL Y-8283 / UCD 57-17) (Kluyveromyces polysporus). OG Mitochondrion. OC Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes; OC Saccharomycetales; Saccharomycetaceae; Vanderwaltozyma. OX NCBI_TaxID=436907; RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=ATCC 22028 / DSM 70294 / BCRC 21397 / CBS 2163 / NBRC 10782 / RC NRRL Y-8283 / UCD 57-17; RX PubMed=17494770; DOI=10.1073/pnas.0608218104; RA Scannell D.R., Frank A.C., Conant G.C., Byrne K.P., Woolfit M., Wolfe K.H.; RT "Independent sorting-out of thousands of duplicated gene pairs in two yeast RT species descended from a whole-genome duplication."; RL Proc. Natl. Acad. Sci. U.S.A. 104:8397-8402(2007). CC -!- FUNCTION: Component of the cytochrome c oxidase, the last enzyme in the CC mitochondrial electron transport chain which drives oxidative CC phosphorylation. The respiratory chain contains 3 multisubunit CC complexes succinate dehydrogenase (complex II, CII), ubiquinol- CC cytochrome c oxidoreductase (cytochrome b-c1 complex, complex III, CC CIII) and cytochrome c oxidase (complex IV, CIV), that cooperate to CC transfer electrons derived from NADH and succinate to molecular oxygen, CC creating an electrochemical gradient over the inner membrane that CC drives transmembrane transport and the ATP synthase. Cytochrome c CC oxidase is the component of the respiratory chain that catalyzes the CC reduction of oxygen to water. Electrons originating from reduced CC cytochrome c in the intermembrane space (IMS) are transferred via the CC dinuclear copper A center (CU(A)) of subunit 2 and heme A of subunit 1 CC to the active site in subunit 1, a binuclear center (BNC) formed by CC heme A3 and copper B (CU(B)). The BNC reduces molecular oxygen to 2 CC water molecules using 4 electrons from cytochrome c in the IMS and 4 CC protons from the mitochondrial matrix. {ECO:0000250|UniProtKB:P00401}. CC -!- CATALYTIC ACTIVITY: CC Reaction=4 Fe(II)-[cytochrome c] + 8 H(+)(in) + O2 = 4 Fe(III)- CC [cytochrome c] + 4 H(+)(out) + 2 H2O; Xref=Rhea:RHEA:11436, CC Rhea:RHEA-COMP:10350, Rhea:RHEA-COMP:14399, ChEBI:CHEBI:15377, CC ChEBI:CHEBI:15378, ChEBI:CHEBI:15379, ChEBI:CHEBI:29033, CC ChEBI:CHEBI:29034; EC=7.1.1.9; CC Evidence={ECO:0000250|UniProtKB:P00401}; CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:11437; CC Evidence={ECO:0000250|UniProtKB:P00401}; CC -!- COFACTOR: CC Name=heme; Xref=ChEBI:CHEBI:30413; CC Evidence={ECO:0000250|UniProtKB:P00401}; CC Note=Binds 2 heme A groups non-covalently per subunit. CC {ECO:0000250|UniProtKB:P00401}; CC -!- COFACTOR: CC Name=Cu cation; Xref=ChEBI:CHEBI:23378; CC Evidence={ECO:0000250|UniProtKB:P00401}; CC Note=Binds a copper B center. {ECO:0000250|UniProtKB:P00401}; CC -!- PATHWAY: Energy metabolism; oxidative phosphorylation. CC {ECO:0000250|UniProtKB:P00401}. CC -!- SUBUNIT: Component of the cytochrome c oxidase (complex IV, CIV), a CC multisubunit enzyme composed of a catalytic core of 3 subunits and CC several supernumerary subunits. The complex exists as a monomer or a CC dimer and forms supercomplexes (SCs) in the inner mitochondrial CC membrane with ubiquinol-cytochrome c oxidoreductase (cytochrome b-c1 CC complex, complex III, CIII). {ECO:0000250|UniProtKB:P00401}. CC -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane CC {ECO:0000250|UniProtKB:P00401}; Multi-pass membrane protein CC {ECO:0000250|UniProtKB:P00401}. CC -!- SIMILARITY: Belongs to the heme-copper respiratory oxidase family. CC {ECO:0000305}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; AM698041; CAN85579.1; -; Genomic_DNA. DR RefSeq; YP_001331018.1; NC_009638.1. DR AlphaFoldDB; A6H4Q6; -. DR SMR; A6H4Q6; -. DR STRING; 436907.A6H4Q6; -. DR GeneID; 5329664; -. DR KEGG; vpo:VapofMp06; -. DR InParanoid; A6H4Q6; -. DR UniPathway; UPA00705; -. DR Proteomes; UP000000267; Mitochondrion. DR GO; GO:0005743; C:mitochondrial inner membrane; IEA:UniProtKB-SubCell. DR GO; GO:0045277; C:respiratory chain complex IV; IEA:InterPro. DR GO; GO:0004129; F:cytochrome-c oxidase activity; IEA:UniProtKB-EC. DR GO; GO:0020037; F:heme binding; IEA:InterPro. DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW. DR GO; GO:0006119; P:oxidative phosphorylation; IEA:UniProtKB-UniPathway. DR CDD; cd01663; Cyt_c_Oxidase_I; 1. DR Gene3D; 1.20.210.10; Cytochrome c oxidase-like, subunit I domain; 1. DR InterPro; IPR023616; Cyt_c_oxase-like_su1_dom. DR InterPro; IPR036927; Cyt_c_oxase-like_su1_sf. DR InterPro; IPR000883; Cyt_C_Oxase_1. DR InterPro; IPR023615; Cyt_c_Oxase_su1_BS. DR InterPro; IPR033944; Cyt_c_oxase_su1_dom. DR PANTHER; PTHR10422; CYTOCHROME C OXIDASE SUBUNIT 1; 1. DR PANTHER; PTHR10422:SF18; CYTOCHROME C OXIDASE SUBUNIT 1; 1. DR Pfam; PF00115; COX1; 1. DR PRINTS; PR01165; CYCOXIDASEI. DR SUPFAM; SSF81442; Cytochrome c oxidase subunit I-like; 1. DR PROSITE; PS50855; COX1; 1. DR PROSITE; PS00077; COX1_CUB; 1. PE 3: Inferred from homology; KW Calcium; Copper; Electron transport; Heme; Iron; Magnesium; Membrane; KW Metal-binding; Mitochondrion; Mitochondrion inner membrane; KW Reference proteome; Respiratory chain; Translocase; Transmembrane; KW Transmembrane helix; Transport. FT CHAIN 1..534 FT /note="Cytochrome c oxidase subunit 1" FT /id="PRO_0000356867" FT TRANSMEM 16..36 FT /note="Helical" FT /evidence="ECO:0000255" FT TRANSMEM 64..84 FT /note="Helical" FT /evidence="ECO:0000255" FT TRANSMEM 101..121 FT /note="Helical" FT /evidence="ECO:0000255" FT TRANSMEM 147..167 FT /note="Helical" FT /evidence="ECO:0000255" FT TRANSMEM 183..203 FT /note="Helical" FT /evidence="ECO:0000255" FT TRANSMEM 235..255 FT /note="Helical" FT /evidence="ECO:0000255" FT TRANSMEM 267..287 FT /note="Helical" FT /evidence="ECO:0000255" FT TRANSMEM 310..330 FT /note="Helical" FT /evidence="ECO:0000255" FT TRANSMEM 338..358 FT /note="Helical" FT /evidence="ECO:0000255" FT TRANSMEM 372..392 FT /note="Helical" FT /evidence="ECO:0000255" FT TRANSMEM 414..434 FT /note="Helical" FT /evidence="ECO:0000255" FT TRANSMEM 453..473 FT /note="Helical" FT /evidence="ECO:0000255" FT BINDING 39 FT /ligand="Ca(2+)" FT /ligand_id="ChEBI:CHEBI:29108" FT /evidence="ECO:0000250|UniProtKB:P00401" FT BINDING 44 FT /ligand="Ca(2+)" FT /ligand_id="ChEBI:CHEBI:29108" FT /evidence="ECO:0000250|UniProtKB:P00401" FT BINDING 62 FT /ligand="Fe(II)-heme a" FT /ligand_id="ChEBI:CHEBI:61715" FT /ligand_note="low-spin" FT /ligand_part="Fe" FT /ligand_part_id="ChEBI:CHEBI:18248" FT /note="axial binding residue" FT /evidence="ECO:0000250|UniProtKB:P00401" FT BINDING 241 FT /ligand="Cu cation" FT /ligand_id="ChEBI:CHEBI:23378" FT /ligand_label="B" FT /evidence="ECO:0000250|UniProtKB:P00401" FT BINDING 245 FT /ligand="O2" FT /ligand_id="ChEBI:CHEBI:15379" FT /evidence="ECO:0000250|UniProtKB:P00396" FT BINDING 290 FT /ligand="Cu cation" FT /ligand_id="ChEBI:CHEBI:23378" FT /ligand_label="B" FT /evidence="ECO:0000250|UniProtKB:P00401" FT BINDING 291 FT /ligand="Cu cation" FT /ligand_id="ChEBI:CHEBI:23378" FT /ligand_label="B" FT /evidence="ECO:0000250|UniProtKB:P00401" FT BINDING 368 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_note="ligand shared with subunit 2" FT /evidence="ECO:0000250|UniProtKB:P00401" FT BINDING 369 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_note="ligand shared with subunit 2" FT /evidence="ECO:0000250|UniProtKB:P00401" FT BINDING 376 FT /ligand="heme a3" FT /ligand_id="ChEBI:CHEBI:83282" FT /ligand_note="high-spin" FT /ligand_part="Fe" FT /ligand_part_id="ChEBI:CHEBI:18248" FT /note="axial binding residue" FT /evidence="ECO:0000250|UniProtKB:P00401" FT BINDING 378 FT /ligand="Fe(II)-heme a" FT /ligand_id="ChEBI:CHEBI:61715" FT /ligand_note="low-spin" FT /ligand_part="Fe" FT /ligand_part_id="ChEBI:CHEBI:18248" FT /note="axial binding residue" FT /evidence="ECO:0000250|UniProtKB:P00401" FT BINDING 441 FT /ligand="Ca(2+)" FT /ligand_id="ChEBI:CHEBI:29108" FT /evidence="ECO:0000250|UniProtKB:P00401" FT CROSSLNK 241..245 FT /note="1'-histidyl-3'-tyrosine (His-Tyr)" FT /evidence="ECO:0000250|UniProtKB:P00401" SQ SEQUENCE 534 AA; 59081 MW; F03FDC314A7F20E0 CRC64; MLQRWLYSTN AKDIAVLYFI FSVFCGMAGT GMSMIIRLEL AGPGNQYLGG NHQLFNTLVT GHAILMVFFL VMPALIGGFG NYLLPLMIGA SDMSYPRLNN ISFWLLPPAL VCLVTSTLVE SGAGTGWTVY APLSGIQSHS GPSVDLAIFA LHMTSISSLL GAINFIVTTL NMRTNGMSMH KMPLFVWAIF ITAFLLLLSL PVLSAGVTLL LMDRNFNTSF YEVAGGGDPV LYQHLFWFFG HPEVYIMIVP AFGVISHIVS TYSKKPVFGE ISMVYAMASI GLLGFLVWSH HMYVVGLDCD TRAYFTSATM IIAIPTGIKI FSWLATIYGG SIRLAVPMMY AIAFLFLFTL GGFTGVALAN ASLDVAFHDT YYVVAHFHYV LSMGAVFSMF AGYYYWSPHI LGLNYNEKLA QIQFWLIFVG VNVIFLPMHF LGINGMPRRI PDYPDAFAGW NYVSSIGSFI AMISLILFIY ILFDQLYNGL ENKINNKSVT FMKAPDFVES NNKFNLNTIK TSSIEFLLNS PPAVHSFNTP AVTN //