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COX3_CANPA
ID   COX3_CANPA              Reviewed;         269 AA.
AC   Q34214;
DT   15-JUL-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   25-MAY-2022, entry version 97.
DE   RecName: Full=Cytochrome c oxidase subunit 3;
DE            EC=7.1.1.9;
DE   AltName: Full=Cytochrome c oxidase polypeptide III;
DE   AltName: Full=Cytochrome oxidase subunit 3;
GN   Name=COX3;
OS   Candida parapsilosis (Yeast).
OG   Mitochondrion.
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes;
OC   Saccharomycetales; Debaryomycetaceae; Candida/Lodderomyces clade; Candida.
OX   NCBI_TaxID=5480;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=SR23 / CBS 7157;
RX   PubMed=7521869; DOI=10.1128/jb.176.18.5622-5630.1994;
RA   Nosek J., Fukuhara H.;
RT   "NADH dehydrogenase subunit genes in the mitochondrial DNA of yeasts.";
RL   J. Bacteriol. 176:5622-5630(1994).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SR23 / CBS 7157;
RX   PubMed=15449175; DOI=10.1007/s00438-004-1046-0;
RA   Nosek J., Novotna M., Hlavatovicova Z., Ussery D.W., Fajkus J., Tomaska L.;
RT   "Complete DNA sequence of the linear mitochondrial genome of the pathogenic
RT   yeast Candida parapsilosis.";
RL   Mol. Genet. Genomics 272:173-180(2004).
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:P00420}.
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:P00420};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:11437;
CC         Evidence={ECO:0000250|UniProtKB:P00420};
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:P00420}.
CC   -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane
CC       {ECO:0000250|UniProtKB:P00420}; Multi-pass membrane protein
CC       {ECO:0000250|UniProtKB:P00420}.
CC   -!- SIMILARITY: Belongs to the cytochrome c oxidase subunit 3 family.
CC       {ECO:0000305}.
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DR   EMBL; X74411; CAE54607.1; -; Genomic_DNA.
DR   RefSeq; NP_943645.1; NC_005253.2.
DR   AlphaFoldDB; Q34214; -.
DR   SMR; Q34214; -.
DR   GeneID; 2657780; -.
DR   CGD; CAL0000144971; CapafMp13.
DR   VEuPathDB; FungiDB:CapafMp13; -.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005751; C:mitochondrial respiratory chain complex IV; IEA:EnsemblFungi.
DR   GO; GO:0004129; F:cytochrome-c oxidase activity; IEA:UniProtKB-EC.
DR   GO; GO:0006123; P:mitochondrial electron transport, cytochrome c to oxygen; IEA:EnsemblFungi.
DR   CDD; cd01665; Cyt_c_Oxidase_III; 1.
DR   Gene3D; 1.20.120.80; -; 1.
DR   InterPro; IPR024791; Cyt_c/ubiquinol_Oxase_su3.
DR   InterPro; IPR033945; Cyt_c_oxase_su3_dom.
DR   InterPro; IPR000298; Cyt_c_oxidase-like_su3.
DR   InterPro; IPR035973; Cyt_c_oxidase_su3-like_sf.
DR   InterPro; IPR013833; Cyt_c_oxidase_su3_a-hlx.
DR   PANTHER; PTHR11403; PTHR11403; 1.
DR   Pfam; PF00510; COX3; 1.
DR   SUPFAM; SSF81452; SSF81452; 1.
DR   PROSITE; PS50253; COX3; 1.
PE   3: Inferred from homology;
KW   Membrane; Mitochondrion; Mitochondrion inner membrane; Translocase;
KW   Transmembrane; Transmembrane helix.
FT   CHAIN           1..269
FT                   /note="Cytochrome c oxidase subunit 3"
FT                   /id="PRO_0000183753"
FT   TRANSMEM        7..29
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        51..71
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        90..110
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        127..147
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        167..187
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        205..225
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        247..267
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   269 AA;  30518 MW;  71E15660C2E7C9CD CRC64;
     MTNNVRGYLQ LHPFHLVGPS PWPIFTSFSL MDLAFSIALN SHGYMANNFY IILSIITVLY
     SMTLWFKDII AESTYLGDHT IAVKRGLNQG FLLFVVSEIL IFASLFWAYL HSAVNPTMDL
     GMSWPPVGID VISPAELPLL NTIILLASGV TITYAHHALI NGNRANTLYG FIYSTLLIAL
     FVMFQFLEYK YAGFTITDGV YGSTFYSLTG LHGLHMIMLT IMLVICTWRV YNYDFTNTSH
     VGAETTILYL HVLDVIWLFI YIIVYWWGS
 
 
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