ID Q8HBS8_9SAUR Unreviewed; 170 AA. AC Q8HBS8; DT 01-MAR-2003, integrated into UniProtKB/TrEMBL. DT 01-MAR-2003, sequence version 1. DT 22-FEB-2023, entry version 90. DE RecName: Full=Cytochrome c oxidase subunit 1 {ECO:0000256|ARBA:ARBA00015947, ECO:0000256|RuleBase:RU000369}; DE EC=7.1.1.9 {ECO:0000256|ARBA:ARBA00012949, ECO:0000256|RuleBase:RU000369}; DE Flags: Fragment; GN Name=COI {ECO:0000313|EMBL:AAM81041.1}; OS Elaphe taeniurus (beauty snake). OG Mitochondrion {ECO:0000313|EMBL:AAM81041.1}. OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; OC Lepidosauria; Squamata; Bifurcata; Unidentata; Episquamata; Toxicofera; OC Serpentes; Colubroidea; Colubridae; Colubrinae; Elaphe. OX NCBI_TaxID=74398 {ECO:0000313|EMBL:AAM81041.1}; RN [1] {ECO:0000313|EMBL:AAM81041.1} RP NUCLEOTIDE SEQUENCE. RA Utiger U., Helfenberger N., Schaetti B., Schmidt C., Ruf M., Ziswiler V.; RT "Molecular systematics and phylogeny of Old and New World ratsnakes, Elaphe RT auct., and related genera (Reptilia, Squamata, Colubridae)."; RL Russ. J. Herpetol. 9:105-124(2002). 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:0000256|RuleBase:RU000369}. 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:0000256|RuleBase:RU000369}; CC -!- COFACTOR: CC Name=Cu cation; Xref=ChEBI:CHEBI:23378; CC Evidence={ECO:0000256|ARBA:ARBA00001935}; CC -!- COFACTOR: CC Name=heme; Xref=ChEBI:CHEBI:30413; CC Evidence={ECO:0000256|ARBA:ARBA00001971}; CC -!- PATHWAY: Energy metabolism; oxidative phosphorylation. CC {ECO:0000256|ARBA:ARBA00004673, ECO:0000256|RuleBase:RU000369}. CC -!- SUBCELLULAR LOCATION: Membrane {ECO:0000256|ARBA:ARBA00004141}; Multi- CC pass membrane protein {ECO:0000256|ARBA:ARBA00004141}. Mitochondrion CC inner membrane {ECO:0000256|RuleBase:RU000369}; Multi-pass membrane CC protein {ECO:0000256|RuleBase:RU000369}. CC -!- SIMILARITY: Belongs to the heme-copper respiratory oxidase family. CC {ECO:0000256|ARBA:ARBA00009578, ECO:0000256|RuleBase:RU000369}. 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; AY122723; AAM81041.1; -; Genomic_DNA. DR EMBL; AY122724; AAM81042.1; -; Genomic_DNA. DR EMBL; AY122725; AAM81043.1; -; Genomic_DNA. DR AlphaFoldDB; Q8HBS8; -. DR SMR; Q8HBS8; -. DR UniPathway; UPA00705; -. DR GO; GO:0005743; C:mitochondrial inner membrane; IEA:UniProtKB-SubCell. DR GO; GO:0070469; C:respirasome; IEA:UniProtKB-KW. 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 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 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 Copper {ECO:0000256|RuleBase:RU000369}; KW Electron transport {ECO:0000256|ARBA:ARBA00022982, KW ECO:0000256|RuleBase:RU000369}; Heme {ECO:0000256|RuleBase:RU000369}; KW Iron {ECO:0000256|RuleBase:RU000369}; KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|RuleBase:RU000369}; KW Metal-binding {ECO:0000256|RuleBase:RU000369}; KW Mitochondrion {ECO:0000256|RuleBase:RU000369, ECO:0000313|EMBL:AAM81041.1}; KW Mitochondrion inner membrane {ECO:0000256|ARBA:ARBA00022792, KW ECO:0000256|RuleBase:RU000369}; KW Respiratory chain {ECO:0000256|RuleBase:RU000369}; KW Sodium {ECO:0000256|ARBA:ARBA00023053}; KW Transmembrane {ECO:0000256|ARBA:ARBA00022692, KW ECO:0000256|RuleBase:RU000369}; KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989, KW ECO:0000256|SAM:Phobius}; Transport {ECO:0000256|RuleBase:RU000369}. FT TRANSMEM 24..50 FT /note="Helical" FT /evidence="ECO:0000256|SAM:Phobius" FT TRANSMEM 62..89 FT /note="Helical" FT /evidence="ECO:0000256|SAM:Phobius" FT TRANSMEM 122..140 FT /note="Helical" FT /evidence="ECO:0000256|SAM:Phobius" FT TRANSMEM 147..168 FT /note="Helical" FT /evidence="ECO:0000256|SAM:Phobius" FT DOMAIN 1..170 FT /note="Cytochrome oxidase subunit I profile" FT /evidence="ECO:0000259|PROSITE:PS50855" FT NON_TER 1 FT /evidence="ECO:0000313|EMBL:AAM81041.1" FT NON_TER 170 FT /evidence="ECO:0000313|EMBL:AAM81041.1" SQ SEQUENCE 170 AA; 18510 MW; 6FA06BFE78C547B4 CRC64; AGTGWTVYPP LSGNLVHSGP SVDLAIFSLH LAGASSILGA INFITTCINM KPKSMPMFNI PLFVWSVLIT AIMLLLALPV LAAAITMLLT DRNLNTSFFD PCGGGDPVLF QHLFWFFGHP EVYILILPGF GIVSSIITFY TGKKNTFGYT SMIWAMMSIA ILGFVVWAHH //