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P32808 (COX3_HELAN) Reviewed, UniProtKB/Swiss-Prot

Last modified April 16, 2014. Version 73. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (1) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Cytochrome c oxidase subunit 3

EC=1.9.3.1
Alternative name(s):
Cytochrome c oxidase polypeptide III
Gene names
Name:COX3
Synonyms:COXIII
Encoded onMitochondrion
OrganismHelianthus annuus (Common sunflower)
Taxonomic identifier4232 [NCBI]
Taxonomic lineageEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaeasteridscampanulidsAsteralesAsteraceaeAsteroideaeHeliantheae allianceHeliantheaeHelianthus

Protein attributes

Sequence length265 AA.
Sequence statusComplete.
Protein existenceInferred from homology

General annotation (Comments)

Function

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

Catalytic activity

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

Subcellular location

Mitochondrion inner membrane; Multi-pass membrane protein By similarity.

Sequence similarities

Belongs to the cytochrome c oxidase subunit 3 family.

Ontologies

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 265265Cytochrome c oxidase subunit 3
PRO_0000183790

Regions

Transmembrane16 – 3621Helical; Potential
Transmembrane41 – 6121Helical; Potential
Transmembrane81 – 10121Helical; Potential
Transmembrane162 – 18221Helical; Potential
Transmembrane200 – 22021Helical; Potential
Transmembrane245 – 26521Helical; Potential

Sequences

Sequence LengthMass (Da)Tools
P32808 [UniParc].

Last modified October 1, 1993. Version 1.
Checksum: BE30F0236E86C9EE

FASTA26529,423
        10         20         30         40         50         60 
MIESQRHSYH LVDPSPWPIS GSLGALATTV GGVMYMHSFQ GGATLLSLGL IFILYTMFVW 

        70         80         90        100        110        120 
WRDVLRESTL EGHHTKVVQL GPRYGFILFI VSEVMFLFAL FRASSHSSLA PTVEIGGIWP 

       130        140        150        160        170        180 
PKGIAVLDPR EIPFLNTPIP LSSGAAVTWA HHAILAGKEK RAVYALVATV SLALVFTAFQ 

       190        200        210        220        230        240 
GMEYYQAPST ISDSIYGSTF FLATGFHGFH VIIGTLFSIV CGIRQYLGHL TKEHHVGFEA 

       250        260 
AAWYWHFVDV VRLFPFVSIY WWGGI 

« Hide

References

[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.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
X57669 Genomic DNA. Translation: CAA40865.1.
PIRS14123.

3D structure databases

ProteinModelPortalP32808.
SMRP32808. Positions 3-264.
ModBaseSearch...
MobiDBSearch...

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Family and domain databases

Gene3D1.20.120.80. 1 hit.
InterProIPR024791. Cyt_c/ubiquinol_Oxase_su3.
IPR000298. Cyt_c_oxidase_su3.
IPR013833. Cyt_c_oxidase_su3_a-hlx.
[Graphical view]
PANTHERPTHR11403. PTHR11403. 1 hit.
PfamPF00510. COX3. 1 hit.
[Graphical view]
SUPFAMSSF81452. SSF81452. 1 hit.
PROSITEPS50253. COX3. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameCOX3_HELAN
AccessionPrimary (citable) accession number: P32808
Entry history
Integrated into UniProtKB/Swiss-Prot: October 1, 1993
Last sequence update: October 1, 1993
Last modified: April 16, 2014
This is version 73 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families