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P32808

- COX3_HELAN

UniProt

P32808 - COX3_HELAN

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Protein

Cytochrome c oxidase subunit 3

Gene

COX3

Organism
Helianthus annuus (Common sunflower)
Status
Reviewed - Annotation score: 3 out of 5- Protein inferred from homologyi

Functioni

Subunits I, II and III form the functional core of the enzyme complex.

Catalytic activityi

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

GO - Molecular functioni

  1. cytochrome-c oxidase activity Source: UniProtKB-EC

GO - Biological processi

  1. aerobic electron transport chain Source: InterPro
Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome c oxidase subunit 3 (EC:1.9.3.1)
Alternative name(s):
Cytochrome c oxidase polypeptide III
Gene namesi
Name:COX3
Synonyms:COXIII
Encoded oniMitochondrion
OrganismiHelianthus annuus (Common sunflower)
Taxonomic identifieri4232 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaeasteridscampanulidsAsteralesAsteraceaeAsteroideaeHeliantheae allianceHeliantheaeHelianthus

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei16 – 3621HelicalSequence AnalysisAdd
BLAST
Transmembranei41 – 6121HelicalSequence AnalysisAdd
BLAST
Transmembranei81 – 10121HelicalSequence AnalysisAdd
BLAST
Transmembranei162 – 18221HelicalSequence AnalysisAdd
BLAST
Transmembranei200 – 22021HelicalSequence AnalysisAdd
BLAST
Transmembranei245 – 26521HelicalSequence AnalysisAdd
BLAST

GO - Cellular componenti

  1. integral component of membrane Source: UniProtKB-KW
  2. mitochondrial inner membrane 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 – 265265Cytochrome c oxidase subunit 3PRO_0000183790Add
BLAST

Structurei

3D structure databases

ProteinModelPortaliP32808.
SMRiP32808. Positions 3-264.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Keywords - Domaini

Transmembrane, Transmembrane helix

Family and domain databases

Gene3Di1.20.120.80. 1 hit.
InterProiIPR024791. Cyt_c/ubiquinol_Oxase_su3.
IPR013833. Cyt_c_oxidase_su3_a-hlx.
IPR000298. Cyt_c_oxidase_su3_dom.
[Graphical view]
PANTHERiPTHR11403. PTHR11403. 1 hit.
PfamiPF00510. COX3. 1 hit.
[Graphical view]
SUPFAMiSSF81452. SSF81452. 1 hit.
PROSITEiPS50253. COX3. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P32808-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30         40         50
MIESQRHSYH LVDPSPWPIS GSLGALATTV GGVMYMHSFQ GGATLLSLGL
60 70 80 90 100
IFILYTMFVW WRDVLRESTL EGHHTKVVQL GPRYGFILFI VSEVMFLFAL
110 120 130 140 150
FRASSHSSLA PTVEIGGIWP PKGIAVLDPR EIPFLNTPIP LSSGAAVTWA
160 170 180 190 200
HHAILAGKEK RAVYALVATV SLALVFTAFQ GMEYYQAPST ISDSIYGSTF
210 220 230 240 250
FLATGFHGFH VIIGTLFSIV CGIRQYLGHL TKEHHVGFEA AAWYWHFVDV
260
VRLFPFVSIY WWGGI
Length:265
Mass (Da):29,423
Last modified:October 1, 1993 - v1
Checksum:iBE30F0236E86C9EE
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X57669 Genomic DNA. Translation: CAA40865.1.
PIRiS14123.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X57669 Genomic DNA. Translation: CAA40865.1 .
PIRi S14123.

3D structure databases

ProteinModelPortali P32808.
SMRi P32808. Positions 3-264.
ModBasei Search...
MobiDBi Search...

Protocols and materials databases

Structural Biology Knowledgebase Search...

Family and domain databases

Gene3Di 1.20.120.80. 1 hit.
InterProi IPR024791. Cyt_c/ubiquinol_Oxase_su3.
IPR013833. Cyt_c_oxidase_su3_a-hlx.
IPR000298. Cyt_c_oxidase_su3_dom.
[Graphical view ]
PANTHERi PTHR11403. PTHR11403. 1 hit.
Pfami PF00510. COX3. 1 hit.
[Graphical view ]
SUPFAMi SSF81452. SSF81452. 1 hit.
PROSITEi PS50253. COX3. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

  1. "The cytochrome oxidase subunit III gene in sunflower mitochondria is cotranscribed with an open reading frame conserved in higher plants."
    Quagliariello C., Saiardi A., Gallerani R.
    Curr. Genet. 18:355-363(1990) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
    Strain: cv. Gloriasol.

Entry informationi

Entry nameiCOX3_HELAN
AccessioniPrimary (citable) accession number: P32808
Entry historyi
Integrated into UniProtKB/Swiss-Prot: October 1, 1993
Last sequence update: October 1, 1993
Last modified: October 29, 2014
This is version 76 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3