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Protein

Cytochrome c oxidase subunit 2

Gene

COII

Organism
Acheta domesticus (House cricket)
Status
Reviewed-Annotation score: -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)DescriptionActionsGraphical viewLength
Metal bindingi160Copper ACurated1
Metal bindingi195Copper ACurated1
Metal bindingi199Copper ACurated1
Metal bindingi203Copper ACurated1

GO - Molecular functioni

Keywordsi

Molecular functionOxidoreductase
Biological processElectron transport, Respiratory chain, Transport
LigandCopper, 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:COII
Encoded oniMitochondrion
OrganismiAcheta domesticus (House cricket)
Taxonomic identifieri6997 [NCBI]
Taxonomic lineageiEukaryotaMetazoaEcdysozoaArthropodaHexapodaInsectaPterygotaNeopteraPolyneopteraOrthopteraEnsiferaGrylloideaGryllidaeGryllinaeAcheta

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Topological domaini1 – 26Mitochondrial intermembraneSequence analysisAdd BLAST26
Transmembranei27 – 48HelicalSequence analysisAdd BLAST22
Topological domaini49 – 62Mitochondrial matrixSequence analysisAdd BLAST14
Transmembranei63 – 82HelicalSequence analysisAdd BLAST20
Topological domaini83 – 227Mitochondrial intermembraneSequence analysisAdd BLAST145

Keywords - Cellular componenti

Membrane, Mitochondrion, Mitochondrion inner membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001834831 – 227Cytochrome c oxidase subunit 2Add BLAST227

Structurei

3D structure databases

ProteinModelPortaliP29870
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Keywords - Domaini

Transmembrane, Transmembrane helix

Family and domain databases

CDDicd13912 CcO_II_C, 1 hit
Gene3Di1.10.287.90, 1 hit
2.60.40.420, 1 hit
InterProiView protein in InterPro
IPR002429 CcO_II-like_C
IPR034210 CcO_II_C
IPR001505 Copper_CuA
IPR008972 Cupredoxin
IPR011759 Cyt_c_oxidase_su2_TM_dom
IPR036257 Cyt_c_oxidase_su2_TM_sf
PfamiView protein in Pfam
PF00116 COX2, 1 hit
PF02790 COX2_TM, 1 hit
SUPFAMiSSF49503 SSF49503, 1 hit
SSF81464 SSF81464, 1 hit
PROSITEiView protein in PROSITE
PS00078 COX2, 1 hit
PS50857 COX2_CUA, 1 hit
PS50999 COX2_TM, 1 hit

Sequencei

Sequence statusi: Complete.

P29870-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MATWSNLNLQ NSSSPLMEQL IFFHDHTLMI LLMITVLVAY IMSMLFFNLY
60 70 80 90 100
TNRFLLEGQT IEIIWTILPA ITLIFIALPS LRLLYLLDES MDPLITMKTI
110 120 130 140 150
GHQWYWSYEY MDFKNIIEFD SYMSALDKLS SFRLLDVDNR TILPMNTQIR
160 170 180 190 200
TLVTAADVIH SWTVSALGVK TDATPGRLNQ INFMINRPGL FYGQCSEICG
210 220
ANHSFMPIVI ESVNLKNFIN WIKNYSS
Length:227
Mass (Da):26,272
Last modified:April 1, 1993 - v1
Checksum:i21E2C67648791422
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M83961 Genomic DNA Translation: AAA31617.1
PIRiI45170

Similar proteinsi

Entry informationi

Entry nameiCOX2_ACHDO
AccessioniPrimary (citable) accession number: P29870
Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 1, 1993
Last sequence update: April 1, 1993
Last modified: May 23, 2018
This is version 105 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)

Miscellaneousi

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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Main funding by: National Institutes of Health