ID   COX1_THEAN              Reviewed;         480 AA.
AC   Q4UJ69;
DT   02-MAY-2006, integrated into UniProtKB/Swiss-Prot.
DT   02-MAY-2006, sequence version 2.
DT   24-JAN-2024, entry version 84.
DE   RecName: Full=Cytochrome c oxidase subunit 1;
DE            EC=7.1.1.9;
DE   AltName: Full=Cytochrome c oxidase polypeptide I;
GN   Name=MT-CO1; Synonyms=COI, COXI, MTCO1; ORFNames=Tap370b08.q2ca38.01;
OS   Theileria annulata.
OG   Mitochondrion.
OC   Eukaryota; Sar; Alveolata; Apicomplexa; Aconoidasida; Piroplasmida;
OC   Theileriidae; Theileria.
OX   NCBI_TaxID=5874;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Ankara;
RX   PubMed=15994557; DOI=10.1126/science.1110418;
RA   Pain A., Renauld H., Berriman M., Murphy L., Yeats C.A., Weir W.,
RA   Kerhornou A., Aslett M., Bishop R., Bouchier C., Cochet M., Coulson R.M.R.,
RA   Cronin A., de Villiers E.P., Fraser A., Fosker N., Gardner M., Goble A.,
RA   Griffiths-Jones S., Harris D.E., Katzer F., Larke N., Lord A., Maser P.,
RA   McKellar S., Mooney P., Morton F., Nene V., O'Neil S., Price C.,
RA   Quail M.A., Rabbinowitsch E., Rawlings N.D., Rutter S., Saunders D.,
RA   Seeger K., Shah T., Squares R., Squares S., Tivey A., Walker A.R.,
RA   Woodward J., Dobbelaere D.A.E., Langsley G., Rajandream M.A., McKeever D.,
RA   Shiels B., Tait A., Barrell B.G., Hall N.;
RT   "Genome of the host-cell transforming parasite Theileria annulata compared
RT   with T. parva.";
RL   Science 309:131-133(2005).
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   -!- SEQUENCE CAUTION:
CC       Sequence=CAI72674.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; CR940346; CAI72674.1; ALT_INIT; Genomic_DNA.
DR   AlphaFoldDB; Q4UJ69; -.
DR   SMR; Q4UJ69; -.
DR   STRING; 5874.Q4UJ69; -.
DR   VEuPathDB; PiroplasmaDB:Tap370b08.q2ca38.01; -.
DR   eggNOG; KOG4769; Eukaryota.
DR   InParanoid; Q4UJ69; -.
DR   OrthoDB; 231992at2759; -.
DR   UniPathway; UPA00705; -.
DR   Proteomes; UP000001950; Mitochondrion.
DR   GO; GO:0005743; C:mitochondrial inner membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0045277; C:respiratory chain complex IV; ISS:UniProtKB.
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   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..480
FT                   /note="Cytochrome c oxidase subunit 1"
FT                   /id="PRO_0000233106"
FT   TRANSMEM        22..42
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        64..84
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        109..129
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        151..171
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        194..214
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        240..260
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        278..298
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        309..329
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        343..363
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        382..402
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        416..436
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        458..478
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   BINDING         45
FT                   /ligand="Ca(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29108"
FT                   /evidence="ECO:0000250|UniProtKB:P00401"
FT   BINDING         50
FT                   /ligand="Ca(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29108"
FT                   /evidence="ECO:0000250|UniProtKB:P00401"
FT   BINDING         69
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         246
FT                   /ligand="Cu cation"
FT                   /ligand_id="ChEBI:CHEBI:23378"
FT                   /ligand_label="B"
FT                   /evidence="ECO:0000250|UniProtKB:P00401"
FT   BINDING         250
FT                   /ligand="O2"
FT                   /ligand_id="ChEBI:CHEBI:15379"
FT                   /evidence="ECO:0000250|UniProtKB:P00396"
FT   BINDING         295
FT                   /ligand="Cu cation"
FT                   /ligand_id="ChEBI:CHEBI:23378"
FT                   /ligand_label="B"
FT                   /evidence="ECO:0000250|UniProtKB:P00401"
FT   BINDING         296
FT                   /ligand="Cu cation"
FT                   /ligand_id="ChEBI:CHEBI:23378"
FT                   /ligand_label="B"
FT                   /evidence="ECO:0000250|UniProtKB:P00401"
FT   BINDING         374
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         375
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         382
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         384
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         447
FT                   /ligand="Ca(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29108"
FT                   /evidence="ECO:0000250|UniProtKB:P00401"
FT   CROSSLNK        246..250
FT                   /note="1'-histidyl-3'-tyrosine (His-Tyr)"
FT                   /evidence="ECO:0000250|UniProtKB:P00401"
SQ   SEQUENCE   480 AA;  53241 MW;  AE9889CE4FEB58AE CRC64;
     MVFEFVLSLF NSVSGNHKII GISYLWLAYW FGMIGFYMSV LIRTELGMSG LKIITMDTLE
     IYNLLFTLHG LIMVFFNIMT GLFGGIGNYL YPVLLGSCDV VYPRVNLYSL LLQPIGFVLV
     VSSVYLEIGS GTGWTLYPPL STSLSNIGID LIIFGLLAAG IASTLSSINF ITTFASIKTI
     GFVIDRISPA AWSIVLTSFL LLLSLPVVTA VFLMVFFDRN HSTMFFESSN SGDPILYQHL
     FWFFGHPEVY IMILPGFGII SLLLSTYTTK EMFGNQTMIL AMGSIALLGC LVWGHHMYTS
     GLEADTRGYF TTVTILIALP TGNKIFNWVT TLQCVESIKS LGLILFAVLF IVNFVIGGTT
     GVVLGNAGLD VVLHDTVYVV GHFHFVLSIG AIISLICFIV YIQRMLFGII LSNRLLSLMA
     PIFMIAVLFT FLPMHFTGFS PLPRRIPDYP DEMWGWNFIC TLGATMMLVL KLTVLFIISL
//