位置:首页 > 蛋白库 > COX3_OENBE
COX3_OENBE
ID   COX3_OENBE              Reviewed;         265 AA.
AC   P08745;
DT   01-AUG-1988, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1995, sequence version 2.
DT   25-MAY-2022, entry version 105.
DE   RecName: Full=Cytochrome c oxidase subunit 3;
DE            EC=7.1.1.9;
DE   AltName: Full=Cytochrome c oxidase polypeptide III;
GN   Name=COX3; Synonyms=COXIII;
OS   Oenothera berteroana (Bertero's evening primrose).
OG   Mitochondrion.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; malvids; Myrtales; Onagraceae; Onagroideae; Onagreae; Oenothera.
OX   NCBI_TaxID=3950;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=cv. Munzia;
RX   PubMed=15981332; DOI=10.1002/j.1460-2075.1987.tb04714.x;
RA   Hiesel R., Schobel W., Schuster W., Brennicke A.;
RT   "The cytochrome oxidase subunit I and subunit III genes in Oenothera
RT   mitochondria are transcribed from identical promoter sequences.";
RL   EMBO J. 6:29-34(1987).
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}.
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; X04764; CAA28459.1; -; Genomic_DNA.
DR   PIR; B26170; OTOB3M.
DR   AlphaFoldDB; P08745; -.
DR   SMR; P08745; -.
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:0004129; F:cytochrome-c oxidase activity; IEA:UniProtKB-EC.
DR   GO; GO:0019646; P:aerobic electron transport chain; IEA:InterPro.
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..265
FT                   /note="Cytochrome c oxidase subunit 3"
FT                   /id="PRO_0000183815"
FT   TRANSMEM        16..36
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        41..61
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        84..104
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        137..157
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        162..182
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        200..220
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        245..265
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   CONFLICT        102
FT                   /note="W -> R (in Ref. 1; CAA28459)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   265 AA;  29527 MW;  E0C0AF91D9F6E49E CRC64;
     MIESQRHSYH LVDPSPWPIS GSLGALATTV GGVMYMHPFQ GGATLLSLGL IFLLYTMFVW
     WRDVLRESTL EGHHTKVVQL GLRYGSILFI VSEVMFLFAF FWASSHSSLA PTVEIGGIWP
     PKGIGVLDPW EIPFLNTPIL LSSGAAVTWA HHAILAGKEK RAVYALVATV SLAIVFTGFQ
     GMEYYQAPPT ISDSIYGSTF YLATGFHGFH VIIGTLFSII CGIRQYLGHL TKEHHVGFEA
     AAWYWHFVDV VRLFLFVSIY WWGGI
 
 
维奥蛋白资源库 - 中文蛋白资源 CopyRight © 2010-2024