位置:首页 > 蛋白库 > COX2_APTAU
COX2_APTAU
ID   COX2_APTAU              Reviewed;         199 AA.
AC   O03889;
DT   15-DEC-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-JUL-1997, sequence version 1.
DT   03-AUG-2022, entry version 107.
DE   RecName: Full=Cytochrome c oxidase subunit 2;
DE            EC=7.1.1.9;
DE   AltName: Full=Cytochrome c oxidase polypeptide II;
DE   Flags: Fragment;
GN   Name=MT-CO2; Synonyms=COII, COXII, MTCO2;
OS   Apteryx australis (Southern brown kiwi).
OG   Mitochondrion.
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC   Archelosauria; Archosauria; Dinosauria; Saurischia; Theropoda;
OC   Coelurosauria; Aves; Palaeognathae; Apterygiformes; Apterygidae; Apteryx.
OX   NCBI_TaxID=8822;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Lee K., Feinstein J., Cracraft J.;
RT   "Phylogenetic relationships of the ratite birds: resolving conflicts
RT   between molecular and morphological data sets.";
RL   (In) Mindell D.P. (eds.);
RL   Avian molecular evolution and systematics, pp.1-1, Academic Press, New York
RL   (1997).
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:P00410}.
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:P00410};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:11437;
CC         Evidence={ECO:0000250|UniProtKB:P00410};
CC   -!- COFACTOR:
CC       Name=Cu cation; Xref=ChEBI:CHEBI:23378;
CC         Evidence={ECO:0000250|UniProtKB:P68530};
CC       Note=Binds a dinuclear copper A center per subunit.
CC       {ECO:0000250|UniProtKB:P68530};
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)) (By similarity).
CC       Found in a complex with TMEM177, COA6, COX18, COX20, SCO1 and SCO2.
CC       Interacts with TMEM177 in a COX20-dependent manner. Interacts with
CC       COX20. Interacts with COX16 (By similarity).
CC       {ECO:0000250|UniProtKB:P00403, ECO:0000250|UniProtKB:P68530}.
CC   -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane
CC       {ECO:0000250|UniProtKB:P68530}; Multi-pass membrane protein
CC       {ECO:0000250|UniProtKB:P68530}.
CC   -!- SIMILARITY: Belongs to the cytochrome c oxidase subunit 2 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; U76064; AAB61314.1; -; Genomic_DNA.
DR   AlphaFoldDB; O03889; -.
DR   SMR; O03889; -.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
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:0005507; F:copper ion binding; IEA:InterPro.
DR   GO; GO:0004129; F:cytochrome-c oxidase activity; IEA:UniProtKB-EC.
DR   CDD; cd13912; CcO_II_C; 1.
DR   Gene3D; 1.10.287.90; -; 1.
DR   Gene3D; 2.60.40.420; -; 1.
DR   InterPro; IPR045187; CcO_II.
DR   InterPro; IPR002429; CcO_II-like_C.
DR   InterPro; IPR034210; CcO_II_C.
DR   InterPro; IPR001505; Copper_CuA.
DR   InterPro; IPR008972; Cupredoxin.
DR   InterPro; IPR014222; Cyt_c_oxidase_su2.
DR   InterPro; IPR011759; Cyt_c_oxidase_su2_TM_dom.
DR   InterPro; IPR036257; Cyt_c_oxidase_su2_TM_sf.
DR   PANTHER; PTHR22888; PTHR22888; 1.
DR   Pfam; PF00116; COX2; 1.
DR   Pfam; PF02790; COX2_TM; 1.
DR   SUPFAM; SSF49503; SSF49503; 1.
DR   SUPFAM; SSF81464; SSF81464; 1.
DR   TIGRFAMs; TIGR02866; CoxB; 1.
DR   PROSITE; PS00078; COX2; 1.
DR   PROSITE; PS50857; COX2_CUA; 1.
DR   PROSITE; PS50999; COX2_TM; 1.
PE   3: Inferred from homology;
KW   Copper; Electron transport; Magnesium; Membrane; Metal-binding;
KW   Mitochondrion; Mitochondrion inner membrane; Respiratory chain;
KW   Translocase; Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           <1..199
FT                   /note="Cytochrome c oxidase subunit 2"
FT                   /id="PRO_0000183501"
FT   TRANSMEM        <1..13
FT                   /note="Helical; Name=I"
FT                   /evidence="ECO:0000250|UniProtKB:P68530"
FT   TOPO_DOM        14..26
FT                   /note="Mitochondrial matrix"
FT                   /evidence="ECO:0000250|UniProtKB:P68530"
FT   TRANSMEM        27..54
FT                   /note="Helical; Name=II"
FT                   /evidence="ECO:0000250|UniProtKB:P68530"
FT   TOPO_DOM        55..199
FT                   /note="Mitochondrial intermembrane"
FT                   /evidence="ECO:0000250|UniProtKB:P68530"
FT   BINDING         128
FT                   /ligand="Cu cation"
FT                   /ligand_id="ChEBI:CHEBI:23378"
FT                   /ligand_label="A1"
FT                   /evidence="ECO:0000250|UniProtKB:P68530"
FT   BINDING         163
FT                   /ligand="Cu cation"
FT                   /ligand_id="ChEBI:CHEBI:23378"
FT                   /ligand_label="A1"
FT                   /evidence="ECO:0000250|UniProtKB:P68530"
FT   BINDING         163
FT                   /ligand="Cu cation"
FT                   /ligand_id="ChEBI:CHEBI:23378"
FT                   /ligand_label="A2"
FT                   /evidence="ECO:0000250|UniProtKB:P68530"
FT   BINDING         165
FT                   /ligand="Cu cation"
FT                   /ligand_id="ChEBI:CHEBI:23378"
FT                   /ligand_label="A2"
FT                   /evidence="ECO:0000250|UniProtKB:P68530"
FT   BINDING         165
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_note="ligand shared with MT-CO1"
FT                   /evidence="ECO:0000250|UniProtKB:P68530"
FT   BINDING         167
FT                   /ligand="Cu cation"
FT                   /ligand_id="ChEBI:CHEBI:23378"
FT                   /ligand_label="A1"
FT                   /evidence="ECO:0000250|UniProtKB:P68530"
FT   BINDING         167
FT                   /ligand="Cu cation"
FT                   /ligand_id="ChEBI:CHEBI:23378"
FT                   /ligand_label="A2"
FT                   /evidence="ECO:0000250|UniProtKB:P68530"
FT   BINDING         171
FT                   /ligand="Cu cation"
FT                   /ligand_id="ChEBI:CHEBI:23378"
FT                   /ligand_label="A2"
FT                   /evidence="ECO:0000250|UniProtKB:P68530"
FT   BINDING         174
FT                   /ligand="Cu cation"
FT                   /ligand_id="ChEBI:CHEBI:23378"
FT                   /ligand_label="A1"
FT                   /evidence="ECO:0000250|UniProtKB:P68530"
FT   NON_TER         1
SQ   SEQUENCE   199 AA;  22374 MW;  0AE496B02F92ACB1 CRC64;
     AICSLVLYLL TLMLMEKLSS NSVDAQEVEL VWTILPAIVL ILLALPSLQI LYMMDEIDEP
     DLTLKAIGHQ WYWTYEYTDF KDLSFDSYMI PTSELPLGHF RLLEVDHRVV VPMESPIRVI
     ITAGDVLHSW AVPTLGVKTD AIPGRLNQTS FITTRPGIFY GQCSEICGAN HSYMPIVVES
     TPLPHFENWS SLLSTSSSL
 
 
维奥蛋白资源库 - 中文蛋白资源 CopyRight © 2010-2024