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Protein

Cytochrome c oxidase subunit 3

Gene

COIII

Organism
Ascaris suum (Pig roundworm) (Ascaris lumbricoides)
Status
Reviewed-Annotation score: 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

GO - Biological processi

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:COIII
Encoded oniMitochondrion
OrganismiAscaris suum (Pig roundworm) (Ascaris lumbricoides)
Taxonomic identifieri6253 [NCBI]
Taxonomic lineageiEukaryotaMetazoaEcdysozoaNematodaChromadoreaAscarididaAscaridoideaAscarididaeAscaris

Subcellular locationi

Topology

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei12 – 3221HelicalSequence AnalysisAdd
BLAST
Transmembranei35 – 5521HelicalSequence AnalysisAdd
BLAST
Transmembranei77 – 9721HelicalSequence AnalysisAdd
BLAST
Transmembranei114 – 13421HelicalSequence AnalysisAdd
BLAST
Transmembranei153 – 17321HelicalSequence AnalysisAdd
BLAST
Transmembranei190 – 21021HelicalSequence AnalysisAdd
BLAST
Transmembranei231 – 25121HelicalSequence AnalysisAdd
BLAST

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Membrane, Mitochondrion, Mitochondrion inner membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 255255Cytochrome c oxidase subunit 3PRO_0000183741Add
BLAST

Structurei

3D structure databases

ProteinModelPortaliP24879.
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.

P24879-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MFHNFHILSL SSYPILIFCS SLGFTSSLVV FFKNGIFGGL LFCLFSIFLV
60 70 80 90 100
SFAWGKDIVM EGLSGYHNFF VMDGFKFGVL VFIFSEFMFF FGIFWTFFDA
110 120 130 140 150
ALVPAHDVGG VWSPIGMHLV NPFGVPLLNT IILLSSGVSV TWAHYSLLSN
160 170 180 190 200
KGCANSLMLT CILAVYFTGI QLMEYKEASF SISDGIFGSI FYLSTGFHGV
210 220 230 240 250
HVLFGGLFLF FNLLRLLMSH FNYNHHLGLE FAIIYWHFVD VVWLFLFVFV

YWWSY
Length:255
Mass (Da):29,094
Last modified:November 1, 1995 - v2
Checksum:i05A992684AC92755
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X54253 Genomic DNA. Translation: CAA38169.1.
PIRiS26020.
RefSeqiNP_006947.1. NC_001327.1.

Genome annotation databases

GeneIDi807665.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X54253 Genomic DNA. Translation: CAA38169.1.
PIRiS26020.
RefSeqiNP_006947.1. NC_001327.1.

3D structure databases

ProteinModelPortaliP24879.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi807665.

Organism-specific databases

CTDi4514.

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]
ProtoNetiSearch...

Publicationsi

  1. "The mitochondrial genomes of two nematodes, Caenorhabditis elegans and Ascaris suum."
    Okimoto R., Macfarlane J.L., Clary D.O., Wolstenholme D.R.
    Genetics 130:471-498(1992) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
    Tissue: Body wall muscle and Egg.

Entry informationi

Entry nameiCOX3_ASCSU
AccessioniPrimary (citable) accession number: P24879
Entry historyi
Integrated into UniProtKB/Swiss-Prot: March 1, 1992
Last sequence update: November 1, 1995
Last modified: January 7, 2015
This is version 81 of the entry and version 2 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.