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Protein

Cytochrome c oxidase subunit 2

Gene

COX2

Organism
Phytophthora megasperma (Potato pink rot fungus)
Status
Reviewed-Annotation score: Annotation score: 3 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 bindingi186 – 1861Copper ACurated
Metal bindingi221 – 2211Copper ACurated
Metal bindingi225 – 2251Copper ACurated
Metal bindingi229 – 2291Copper 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:COX2
Encoded oniMitochondrion
OrganismiPhytophthora megasperma (Potato pink rot fungus)
Taxonomic identifieri4788 [NCBI]
Taxonomic lineageiEukaryotaStramenopilesOomycetesPeronosporalesPhytophthora

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Topological domaini1 – 4343Mitochondrial intermembraneSequence AnalysisAdd
BLAST
Transmembranei44 – 6421HelicalSequence AnalysisAdd
BLAST
Topological domaini65 – 8218Mitochondrial matrixSequence AnalysisAdd
BLAST
Transmembranei83 – 10321HelicalSequence AnalysisAdd
BLAST
Topological domaini104 – 266163Mitochondrial intermembraneSequence AnalysisAdd
BLAST

GO - Cellular componenti

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

Keywords - Cellular componenti

Membrane, Mitochondrion, Mitochondrion inner membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 266266Cytochrome c oxidase subunit 2PRO_0000183661Add
BLAST

Family & Domainsi

Sequence similaritiesi

Keywords - Domaini

Transmembrane, Transmembrane helix

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.

Q02212-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTITNYINNQ FTFLDMAEPW QLGFQDPATP VMEGIINFHH DLMFFLISIV
60 70 80 90 100
VFVCWMLFRV ITLFDEKKNK IPATVVHGAT IEIIWTSIPA LILLTVAVPS
110 120 130 140 150
FALLYSMDEV IDPIITLKVI GSQWYWSYEY SDNLEFSDEP LIFDSYMIQE
160 170 180 190 200
DDLAIGQFRI LEVDNRVVVP TNSHIRVLIT ASDVLHSWAI PSLGIKLDAC
210 220 230 240 250
PGRLNQTSMF IKREGVFYGQ CSEICGVNHG FMPIVVEAVS LEDYLTWLKN
260
KINFDFNVXL IKFYGI
Length:266
Mass (Da):30,491
Last modified:September 30, 1996 - v1
Checksum:i86E0DE02C801CB8D
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
L04457 Genomic DNA. Translation: AAA32022.2.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
L04457 Genomic DNA. Translation: AAA32022.2.

3D structure databases

ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

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. "Genic rearrangements in Phytophthora mitochondrial DNA."
    Shumard-Hudspeth D.S., Hudspeth M.E.
    Curr. Genet. 17:413-415(1989) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
    Strain: 695T.
    Tissue: Mycelium.
  2. "Oomycete mtDNA: Phytophthora genes for cytochrome c oxidase use an unmodified genetic code and encode proteins most similar to plants."
    Sachay D.J., Hudspeth D.S., Nadler S.A., Hudspeth M.E.
    Exp. Mycol. 17:7-23(1992)
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
    Strain: 695T.
    Tissue: Mycelium.

Entry informationi

Entry nameiCOX2_PHYME
AccessioniPrimary (citable) accession number: Q02212
Entry historyi
Integrated into UniProtKB/Swiss-Prot: September 30, 1996
Last sequence update: September 30, 1996
Last modified: March 31, 2015
This is version 85 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)

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.