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Protein

Cytochrome c oxidase subunit 2

Gene

MT-CO2

Organism
Lycodon semicarinatus (Ryukyu odd-tooth snake) (Eumesodon semicarinatus)
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 bindingi162 – 1621Copper ACurated
Metal bindingi197 – 1971Copper ACurated
Metal bindingi201 – 2011Copper ACurated
Metal bindingi205 – 2051Copper ACurated

GO - Molecular functioni

  1. copper ion binding Source: InterPro
  2. cytochrome-c oxidase activity Source: UniProtKB-EC

GO - Biological processi

  1. electron transport chain Source: InterPro
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
OrganismiLycodon semicarinatus (Ryukyu odd-tooth snake) (Eumesodon semicarinatus)
Taxonomic identifieri56549 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiLepidosauriaSquamataBifurcataUnidentataEpisquamataToxicoferaSerpentesColubroideaColubridaeColubrinaeLycodon

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Topological domaini1 – 2626Mitochondrial intermembraneSequence AnalysisAdd
BLAST
Transmembranei27 – 4822HelicalSequence AnalysisAdd
BLAST
Topological domaini49 – 6214Mitochondrial matrixSequence AnalysisAdd
BLAST
Transmembranei63 – 8220HelicalSequence AnalysisAdd
BLAST
Topological domaini83 – 228146Mitochondrial intermembraneSequence AnalysisAdd
BLAST

GO - Cellular componenti

  1. integral component of membrane Source: UniProtKB-KW
  2. mitochondrial inner membrane Source: UniProtKB-SubCell
  3. respiratory chain complex IV Source: UniProtKB
Complete GO annotation...

Keywords - Cellular componenti

Membrane, Mitochondrion, Mitochondrion inner membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 228228Cytochrome c oxidase subunit 2PRO_0000183571Add
BLAST

Structurei

3D structure databases

ProteinModelPortaliO79549.
SMRiO79549. Positions 1-227.
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.

O79549-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MPHASQLSLQ EAMGPTMEEV IFLHDHVLLL TCLMTMVITM FTLTATTTAL
60 70 80 90 100
THNDPTEEVE QLEAAWTVAP IMILILTALP SVRSLYLMEE VFNPYLTIKA
110 120 130 140 150
TGHQWYWNYE YSDGVKISFD SYMIQTKDLQ NGSPRLLEVD HRMVMPAGLQ
160 170 180 190 200
TRVVVTAEDV LHSWTIPSLG VKVDAVPGRL NQLPLATSRV GVFYGQCSEI
210 220
CGANHSFMPI AMEATPLHHF EQWLISEQ
Length:228
Mass (Da):25,648
Last modified:November 1, 1998 - v1
Checksum:i61BD618481EFDDB4
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AB008539 Genomic DNA. Translation: BAA33025.1.
PIRiT11091.
RefSeqiNP_008422.1. NC_001945.1.

Genome annotation databases

GeneIDi808270.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AB008539 Genomic DNA. Translation: BAA33025.1.
PIRiT11091.
RefSeqiNP_008422.1. NC_001945.1.

3D structure databases

ProteinModelPortaliO79549.
SMRiO79549. Positions 1-227.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi808270.

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 complete nucleotide sequence of a snake (Dinodon semicarinatus) mitochondrial genome with two identical control regions."
    Kumazawa Y., Ota H., Nishida M., Ozawa T.
    Genetics 150:313-329(1997) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
    Tissue: Liver.

Entry informationi

Entry nameiCOX2_LYCSM
AccessioniPrimary (citable) accession number: O79549
Entry historyi
Integrated into UniProtKB/Swiss-Prot: June 1, 2001
Last sequence update: November 1, 1998
Last modified: January 7, 2015
This is version 90 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.