Identification
BMDB Protein ID BMDBP01053
Secondary Accession Numbers None
Name Cytochrome c oxidase subunit 5B, mitochondrial
Synonyms Not Available
Gene Name COX5B
Protein Type Enzyme
Biological Properties
General Function Involved in cytochrome-c oxidase activity
Specific Function Component of the cytochrome c oxidase, the last enzyme in the mitochondrial electron transport chain which drives oxidative phosphorylation. The respiratory chain contains 3 multisubunit complexes succinate dehydrogenase (complex II, CII), ubiquinol-cytochrome c oxidoreductase (cytochrome b-c1 complex, complex III, CIII) and cytochrome c oxidase (complex IV, CIV), that cooperate to transfer electrons derived from NADH and succinate to molecular oxygen, creating an electrochemical gradient over the inner membrane that drives transmembrane transport and the ATP synthase. Cytochrome c oxidase is the component of the respiratory chain that catalyzes the reduction of oxygen to water. Electrons originating from reduced cytochrome c in the intermembrane space (IMS) are transferred via the dinuclear copper A center (CU(A)) of subunit 2 and heme A of subunit 1 to the active site in subunit 1, a binuclear center (BNC) formed by heme A3 and copper B (CU(B)). The BNC reduces molecular oxygen to 2 water molecules using 4 electrons from cytochrome c in the IMS and 4 protons from the mitochondrial matrix.
Pathways Not Available
Reactions Not Available
GO Classification Not Available
Cellular Location Not Available
Gene Properties
Chromosome Location 11
Locus Not Available
SNPs COX5B
Gene Sequence
>390 bp
ATGGCGTCAAGGTTACTCCGTGGAGTTGGAGCTTTGGCCTCCCAGGCCCTGAGGGCCCGG
GGTCCAAATGGAGTCTCCGTGGTGCGCTCTATGGCGTCTGGAGGTGGTGTTCCTACTGAT
GAAGAGCAGGCGACTGGGCTAGAGAGGGAGGTCATGCTGGCTGCTCGCAAGGGACAGGAC
CCATACAATATACTTGCCCCAAAGGCAACCTCAGGTACCAAGGAGGACCCTAATTTAGTC
CCCTCCATCACCAACAAGCGGATAGTGGGCTGCATCTGTGAAGAAGACAACAGTACTGTC
ATCTGGTTCTGGCTGCACAAAGGCGAGGCCCAGCGATGCCCCAGCTGTGGAACCCATTAC
AAGCTGGTGCCACACCAGCTGGCCCACTGA
Protein Properties
Number of Residues 129
Molecular Weight 13834.0
Theoretical pI 8.66
Pfam Domain Function Not Available
Signals
  • None
Transmembrane Regions Not Available
Protein Sequence
>Cytochrome c oxidase subunit 5B, mitochondrial
MASRLLRGVGALASQALRARGPNGVSVVRSMASGGGVPTDEEQATGLEREVMLAARKGQD
PYNILAPKATSGTKEDPNLVPSITNKRIVGCICEEDNSTVIWFWLHKGEAQRCPSCGTHY
KLVPHQLAH
GenBank ID Protein AAI02580.1
UniProtKB/Swiss-Prot ID P00428
UniProtKB/Swiss-Prot Entry Name COX5B_BOVIN
PDB IDs
GenBank Gene ID BC102579
GeneCard ID COX5B
GenAtlas ID Not Available
HGNC ID Not Available
References
General References Not Available