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Protein

Cytochrome c oxidase subunit 3

Gene

COX3

Organism
Acanthamoeba castellanii (Amoeba)
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:COX3
Encoded oniMitochondrion
OrganismiAcanthamoeba castellanii (Amoeba)
Taxonomic identifieri5755 [NCBI]
Taxonomic lineageiEukaryotaAmoebozoaDiscoseaLongamoebiaCentramoebidaAcanthamoebidaeAcanthamoeba

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transmembranei53 – 73HelicalSequence analysisAdd BLAST21
Transmembranei77 – 97HelicalSequence analysisAdd BLAST21
Transmembranei122 – 142HelicalSequence analysisAdd BLAST21
Transmembranei169 – 191HelicalSequence analysisAdd BLAST23
Transmembranei217 – 237HelicalSequence analysisAdd BLAST21
Transmembranei269 – 289HelicalSequence analysisAdd BLAST21
Transmembranei298 – 318HelicalSequence analysisAdd BLAST21

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Membrane, Mitochondrion, Mitochondrion inner membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001837261 – 329Cytochrome c oxidase subunit 3Add BLAST329

Structurei

3D structure databases

ProteinModelPortaliQ37374.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Keywords - Domaini

Transmembrane, Transmembrane helix

Family and domain databases

CDDicd01665. Cyt_c_Oxidase_III. 1 hit.
Gene3Di1.20.120.80. 1 hit.
InterProiIPR024791. Cyt_c/ubiquinol_Oxase_su3.
IPR033945. Cyt_c_oxase_su3_dom.
IPR000298. Cyt_c_oxidase-like_su3.
IPR013833. Cyt_c_oxidase_su3_a-hlx.
[Graphical view]
PANTHERiPTHR11403. PTHR11403. 2 hits.
PfamiPF00510. COX3. 2 hits.
[Graphical view]
SUPFAMiSSF81452. SSF81452. 1 hit.
PROSITEiPS50253. COX3. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Q37374-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MKLNYDFFLN KFNNVYNNDI RLVDLSNKWW YHNCRVHFAG NQKHSFHIVT
60 70 80 90 100
RSPWPLYSSI AALMFTFGLV MHMHNYFYGN LLSLAGFFLI LLMMFVWWRD
110 120 130 140 150
VIRESTFSGY HTKKVQQGLR LGVILFIISE VMFFFSFFWA FFHASLSPSV
160 170 180 190 200
VLGSVWPPLG INVLNPLKIP LLNTLILLLS GLTVTWSHHV IRDKSWQKFF
210 220 230 240 250
FSNSNNEEFK APLLDNYVIC AFALFLTVFL GLEFTVWQGY EYYKASFYIY
260 270 280 290 300
DGVYGSTFYM TTGLHGLHVI IGTLFLIVCF FRLIDLHFIY NHHFGYEAAI
310 320
WYWHFVDVVW IFLFLSIYCW GSGVDSFFK
Length:329
Mass (Da):38,914
Last modified:November 1, 1996 - v1
Checksum:iA6F2036F57EE8047
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
U12386 Genomic DNA. Translation: AAD11825.1.
PIRiS53833.
RefSeqiNP_042532.1. NC_001637.1.

Genome annotation databases

GeneIDi1734027.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
U12386 Genomic DNA. Translation: AAD11825.1.
PIRiS53833.
RefSeqiNP_042532.1. NC_001637.1.

3D structure databases

ProteinModelPortaliQ37374.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi1734027.

Family and domain databases

CDDicd01665. Cyt_c_Oxidase_III. 1 hit.
Gene3Di1.20.120.80. 1 hit.
InterProiIPR024791. Cyt_c/ubiquinol_Oxase_su3.
IPR033945. Cyt_c_oxase_su3_dom.
IPR000298. Cyt_c_oxidase-like_su3.
IPR013833. Cyt_c_oxidase_su3_a-hlx.
[Graphical view]
PANTHERiPTHR11403. PTHR11403. 2 hits.
PfamiPF00510. COX3. 2 hits.
[Graphical view]
SUPFAMiSSF81452. SSF81452. 1 hit.
PROSITEiPS50253. COX3. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiCOX3_ACACA
AccessioniPrimary (citable) accession number: Q37374
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 15, 1998
Last sequence update: November 1, 1996
Last modified: November 30, 2016
This is version 84 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

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 one 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.