CX7A1_TRACR
ID CX7A1_TRACR Reviewed; 79 AA.
AC Q9N234;
DT 29-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2000, sequence version 1.
DT 03-AUG-2022, entry version 66.
DE RecName: Full=Cytochrome c oxidase subunit 7A1, mitochondrial;
DE AltName: Full=Cytochrome c oxidase subunit VIIa-heart;
DE Short=Cytochrome c oxidase subunit VIIa-H;
DE Flags: Precursor;
GN Name=COX7A1;
OS Trachypithecus cristatus (Silvered leaf-monkey) (Presbytis cristata).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini;
OC Cercopithecidae; Colobinae; Trachypithecus.
OX NCBI_TaxID=122765;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=10335655; DOI=10.1093/oxfordjournals.molbev.a026144;
RA Schmidt T.R., Goodman M., Grossman L.I.;
RT "Molecular evolution of the COX7A gene family in primates.";
RL Mol. Biol. Evol. 16:619-626(1999).
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:P10174}.
CC -!- PATHWAY: Energy metabolism; oxidative phosphorylation.
CC {ECO:0000250|UniProtKB:P10174}.
CC -!- SUBUNIT: Component of the cytochrome c oxidase (complex IV, CIV), a
CC multisubunit enzyme composed of 14 subunits. The complex is composed of
CC a catalytic core of 3 subunits MT-CO1, MT-CO2 and MT-CO3, encoded in
CC the mitochondrial DNA, and 11 supernumerary subunits COX4I, COX5A,
CC COX5B, COX6A, COX6B, COX6C, COX7A, COX7B, COX7C, COX8 and NDUFA4, which
CC are encoded in the nuclear genome. The complex exists as a monomer or a
CC dimer and forms supercomplexes (SCs) in the inner mitochondrial
CC membrane with NADH-ubiquinone oxidoreductase (complex I, CI) and
CC ubiquinol-cytochrome c oxidoreductase (cytochrome b-c1 complex, complex
CC III, CIII), resulting in different assemblies (supercomplex
CC SCI(1)III(2)IV(1) and megacomplex MCI(2)III(2)IV(2)).
CC {ECO:0000250|UniProtKB:P07470}.
CC -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane
CC {ECO:0000250|UniProtKB:P07470}; Single-pass membrane protein
CC {ECO:0000250|UniProtKB:P07470}.
CC -!- SIMILARITY: Belongs to the cytochrome c oxidase VIIa family.
CC {ECO:0000305}.
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DR EMBL; AF127787; AAF72745.1; -; Genomic_DNA.
DR AlphaFoldDB; Q9N234; -.
DR SMR; Q9N234; -.
DR UniPathway; UPA00705; -.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR GO; GO:0005751; C:mitochondrial respiratory chain complex IV; IEA:InterPro.
DR GO; GO:0016491; F:oxidoreductase activity; IEA:UniProtKB-KW.
DR GO; GO:0006123; P:mitochondrial electron transport, cytochrome c to oxygen; IEA:InterPro.
DR CDD; cd00928; Cyt_c_Oxidase_VIIa; 1.
DR Gene3D; 4.10.91.10; -; 1.
DR InterPro; IPR039297; COX7a.
DR InterPro; IPR036539; Cyt_c_oxidase_su7a_sf.
DR InterPro; IPR003177; Cytc_oxidase_su7a_met.
DR PANTHER; PTHR10510; PTHR10510; 1.
DR Pfam; PF02238; COX7a; 1.
DR SUPFAM; SSF81419; SSF81419; 1.
PE 3: Inferred from homology;
KW Membrane; Mitochondrion; Mitochondrion inner membrane; Oxidoreductase;
KW Transit peptide; Transmembrane; Transmembrane helix.
FT TRANSIT 1..21
FT /note="Mitochondrion"
FT /evidence="ECO:0000250|UniProtKB:P07470"
FT CHAIN 22..79
FT /note="Cytochrome c oxidase subunit 7A1, mitochondrial"
FT /id="PRO_0000006151"
FT TOPO_DOM 22..46
FT /note="Mitochondrial matrix"
FT /evidence="ECO:0000250|UniProtKB:P07470"
FT TRANSMEM 47..75
FT /note="Helical"
FT /evidence="ECO:0000250|UniProtKB:P07470"
FT TOPO_DOM 76..79
FT /note="Mitochondrial intermembrane"
FT /evidence="ECO:0000250|UniProtKB:P07470"
SQ SEQUENCE 79 AA; 9076 MW; 349367C42BAC4B02 CRC64;
MQALRVSRAL IRSFNTTARN RFQNRVPEKQ KLFQEDNDIP LYLKGGIVDN ILYRVTMGLC
LGGSAYSMYC LGWASFPRN
