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Protein

Cytochrome c oxidase subunit 2

Gene

MT-CO2

Organism
Struthio camelus (Common ostrich)
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Protein inferred from homologyi

Functioni

Cytochrome c oxidase is the component of the respiratory chain that catalyzes the reduction of oxygen to water. Subunits 1-3 form the functional core of the enzyme complex. Subunit 2 transfers the electrons from cytochrome c via its binuclear copper A center to the bimetallic center of the catalytic subunit 1.

Catalytic activityi

4 ferrocytochrome c + O2 + 4 H+ = 4 ferricytochrome c + 2 H2O.

Cofactori

Cu cationNote: Binds a copper A center.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi160 – 1601Copper ACurated
Metal bindingi195 – 1951Copper ACurated
Metal bindingi199 – 1991Copper ACurated
Metal bindingi203 – 2031Copper ACurated

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

Electron transport, Respiratory chain, Transport

Keywords - Ligandi

Copper, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome c oxidase subunit 2 (EC:1.9.3.1)
Alternative name(s):
Cytochrome c oxidase polypeptide II
Gene namesi
Name:MT-CO2
Synonyms:COII, COXII, MTCO2
Encoded oniMitochondrion
OrganismiStruthio camelus (Common ostrich)
Taxonomic identifieri8801 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiArchelosauriaArchosauriaDinosauriaSaurischiaTheropodaCoelurosauriaAvesPalaeognathaeStruthioniformesStruthionidaeStruthio

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Topological domaini1 – 2626Mitochondrial intermembraneSequence AnalysisAdd
BLAST
Transmembranei27 – 4721HelicalSequence AnalysisAdd
BLAST
Topological domaini48 – 6114Mitochondrial matrixSequence AnalysisAdd
BLAST
Transmembranei62 – 8120HelicalSequence AnalysisAdd
BLAST
Topological domaini82 – 229148Mitochondrial intermembraneSequence AnalysisAdd
BLAST

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Membrane, Mitochondrion, Mitochondrion inner membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 229229Cytochrome c oxidase subunit 2PRO_0000183696Add
BLAST

Structurei

3D structure databases

ProteinModelPortaliO21400.
SMRiO21400. Positions 1-223.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

HOVERGENiHBG012727.

Family and domain databases

Gene3Di1.10.287.90. 1 hit.
2.60.40.420. 1 hit.
InterProiIPR001505. Copper_CuA.
IPR008972. Cupredoxin.
IPR014222. Cyt_c_oxidase_su2.
IPR002429. Cyt_c_oxidase_su2_C.
IPR011759. Cyt_c_oxidase_su2_TM_dom.
[Graphical view]
PfamiPF00116. COX2. 1 hit.
PF02790. COX2_TM. 1 hit.
[Graphical view]
SUPFAMiSSF49503. SSF49503. 1 hit.
SSF81464. SSF81464. 1 hit.
TIGRFAMsiTIGR02866. CoxB. 1 hit.
PROSITEiPS00078. COX2. 1 hit.
PS50857. COX2_CUA. 1 hit.
PS50999. COX2_TM. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

O21400-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MANPSQFGFQ DASSPIMEEL VEFHDHALMV ALAICSLVLY LLALMLVEKL
60 70 80 90 100
SSNTVDAQEV ELIWTILPAI VLILLALPSL QILYMMDEID EPDLTLKAIG
110 120 130 140 150
HQWYWSYEYT DFKDLTFDSY MIPTSELPPG HFRLLEVDHR VVVPMESPIR
160 170 180 190 200
VIITAGDVLH SWAVPTLGVK TDAIPGRLNQ TSFITTRPGI FYGQCSEICG
210 220
ANHSYMPIVV ESTPLTYFES WSSLLSTDS
Length:229
Mass (Da):25,700
Last modified:January 1, 1998 - v1
Checksum:iB9377617BACB14EF
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Y12025 Genomic DNA. Translation: CAA72747.1.
AF069429 Genomic DNA. Translation: AAD09386.1.
AF338715 Genomic DNA. Translation: AAK53348.1.
U76069 Genomic DNA. Translation: AAB61329.1. Different termination.
PIRiD90612.
T12412.
RefSeqiNP_115444.1. NC_002785.1.

Genome annotation databases

GeneIDi803280.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Y12025 Genomic DNA. Translation: CAA72747.1.
AF069429 Genomic DNA. Translation: AAD09386.1.
AF338715 Genomic DNA. Translation: AAK53348.1.
U76069 Genomic DNA. Translation: AAB61329.1. Different termination.
PIRiD90612.
T12412.
RefSeqiNP_115444.1. NC_002785.1.

3D structure databases

ProteinModelPortaliO21400.
SMRiO21400. Positions 1-223.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi803280.

Organism-specific databases

CTDi4513.

Phylogenomic databases

HOVERGENiHBG012727.

Family and domain databases

Gene3Di1.10.287.90. 1 hit.
2.60.40.420. 1 hit.
InterProiIPR001505. Copper_CuA.
IPR008972. Cupredoxin.
IPR014222. Cyt_c_oxidase_su2.
IPR002429. Cyt_c_oxidase_su2_C.
IPR011759. Cyt_c_oxidase_su2_TM_dom.
[Graphical view]
PfamiPF00116. COX2. 1 hit.
PF02790. COX2_TM. 1 hit.
[Graphical view]
SUPFAMiSSF49503. SSF49503. 1 hit.
SSF81464. SSF81464. 1 hit.
TIGRFAMsiTIGR02866. CoxB. 1 hit.
PROSITEiPS00078. COX2. 1 hit.
PS50857. COX2_CUA. 1 hit.
PS50999. COX2_TM. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "The mtDNA sequence of the ostrich and the divergence between paleognathous and neognathous birds."
    Harlid A., Janke A., Arnason U.
    Mol. Biol. Evol. 14:754-761(1997) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
  2. "Primers for a PCR-based approach to complete mitochondrial genome sequencing."
    Sorenson M.D., Dimcheff D.E., Ast J.C., Yuri T., Mindell D.P.
    Submitted (JUN-1998) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
  3. "Complete mitochondrial DNA genome sequences of extinct birds: ratite phylogenetics and the vicariance biogeography hypothesis."
    Haddrath O., Baker A.J.
    Proc. R. Soc. B 268:939-945(2001) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
  4. "Phylogenetic relationships of the ratite birds: resolving conflicts between molecular and morphological data sets."
    Lee K., Feinstein J., Cracraft J.
    (In) Mindell D.P. (eds.); Avian molecular evolution and systematics, pp.1-1, Academic Press, New York (1997)
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 33-229.

Entry informationi

Entry nameiCOX2_STRCA
AccessioniPrimary (citable) accession number: O21400
Secondary accession number(s): O03894
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 15, 1998
Last sequence update: January 1, 1998
Last modified: March 4, 2015
This is version 96 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.