CX6B1_PONAB
ID CX6B1_PONAB Reviewed; 86 AA.
AC Q5RCT0;
DT 27-SEP-2005, integrated into UniProtKB/Swiss-Prot.
DT 23-JAN-2007, sequence version 3.
DT 03-AUG-2022, entry version 82.
DE RecName: Full=Cytochrome c oxidase subunit 6B1;
DE AltName: Full=Cytochrome c oxidase subunit VIb isoform 1;
DE Short=COX VIb-1;
GN Name=COX6B1;
OS Pongo abelii (Sumatran orangutan) (Pongo pygmaeus abelii).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae;
OC Pongo.
OX NCBI_TaxID=9601;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC TISSUE=Kidney;
RG The German cDNA consortium;
RL Submitted (NOV-2004) to the EMBL/GenBank/DDBJ databases.
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:Q01519}.
CC -!- PATHWAY: Energy metabolism; oxidative phosphorylation.
CC {ECO:0000250|UniProtKB:Q01519}.
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:P00429}.
CC -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane
CC {ECO:0000250|UniProtKB:P00429}; Peripheral membrane protein
CC {ECO:0000250|UniProtKB:P00429}; Intermembrane side
CC {ECO:0000250|UniProtKB:P00429}.
CC -!- SIMILARITY: Belongs to the cytochrome c oxidase subunit 6B family.
CC {ECO:0000305}.
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DR EMBL; CR858188; CAH90427.1; -; mRNA.
DR RefSeq; NP_001125213.1; NM_001131741.1.
DR AlphaFoldDB; Q5RCT0; -.
DR SMR; Q5RCT0; -.
DR STRING; 9601.ENSPPYP00000011053; -.
DR Ensembl; ENSPPYT00000011485; ENSPPYP00000011053; ENSPPYG00000009872.
DR GeneID; 100172105; -.
DR KEGG; pon:100172105; -.
DR CTD; 1340; -.
DR eggNOG; KOG3057; Eukaryota.
DR GeneTree; ENSGT00940000162407; -.
DR InParanoid; Q5RCT0; -.
DR OrthoDB; 1586678at2759; -.
DR UniPathway; UPA00705; -.
DR Proteomes; UP000001595; Chromosome 19.
DR GO; GO:0005743; C:mitochondrial inner membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0045277; C:respiratory chain complex IV; IEA:InterPro.
DR GO; GO:0006119; P:oxidative phosphorylation; IEA:UniProtKB-UniPathway.
DR CDD; cd00926; Cyt_c_Oxidase_VIb; 1.
DR Gene3D; 1.10.10.140; -; 1.
DR InterPro; IPR003213; Cyt_c_oxidase_su6B.
DR InterPro; IPR036549; Cyt_c_oxidase_su6B_sf.
DR PANTHER; PTHR11387; PTHR11387; 1.
DR Pfam; PF02297; COX6B; 1.
DR PIRSF; PIRSF000278; Cyt_c_oxidase_6B; 1.
DR SUPFAM; SSF47694; SSF47694; 1.
DR PROSITE; PS51808; CHCH; 1.
PE 3: Inferred from homology;
KW Acetylation; Disulfide bond; Membrane; Mitochondrion;
KW Mitochondrion inner membrane; Reference proteome.
FT INIT_MET 1
FT /note="Removed"
FT /evidence="ECO:0000250|UniProtKB:P00429"
FT CHAIN 2..86
FT /note="Cytochrome c oxidase subunit 6B1"
FT /id="PRO_0000194916"
FT DOMAIN 27..73
FT /note="CHCH"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01150"
FT MOTIF 30..40
FT /note="Cx9C motif"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01150"
FT MOTIF 54..65
FT /note="Cx10C motif"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01150"
FT MOD_RES 2
FT /note="N-acetylalanine"
FT /evidence="ECO:0000250|UniProtKB:P00429"
FT DISULFID 30..65
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01150"
FT DISULFID 40..54
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01150"
SQ SEQUENCE 86 AA; 10192 MW; 1378B6E6491BE719 CRC64;
MAEDMETKLK NYKTAPFDSR FPNQNQTRNC WQNYLDFHRC QKAMTAKGGD ISVCEWYQRV
YQSLCPTSWV TDWDEQRAEG TFPGKI
