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O03521 (COX1_CASBE) Reviewed, UniProtKB/Swiss-Prot

Last modified March 6, 2013. Version 72. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
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Names and origin

Protein namesRecommended name:
Cytochrome c oxidase subunit 1
EC=1.9.3.1
Alternative name(s):
Cytochrome c oxidase polypeptide I
Gene names
Name:MT-CO1
Synonyms:COI, COXI, MTCO1
Encoded onMitochondrion
OrganismCasuarius bennetti (Dwarf cassowary)
Taxonomic identifier30463 [NCBI]
Taxonomic lineageEukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Archosauria › Dinosauria › Saurischia › Theropoda › Coelurosauria › Aves › Palaeognathae › Casuariiformes › Casuariidae › Casuarius

Protein attributes

Sequence length337 AA.
Sequence statusFragment.
Protein existenceInferred from homology

General annotation (Comments)

Function

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. CO I is the catalytic subunit of the enzyme. Electrons originating in cytochrome c are transferred via the copper A center of subunit 2 and heme A of subunit 1 to the bimetallic center formed by heme A3 and copper B.

Catalytic activity

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

Pathway

Energy metabolism; oxidative phosphorylation.

Subcellular location

Mitochondrion inner membrane; Multi-pass membrane protein.

Sequence similarities

Belongs to the heme-copper respiratory oxidase family.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – ›337›337Cytochrome c oxidase subunit 1
PRO_0000183304

Regions

Transmembrane18 – 3821Helical; Potential
Transmembrane57 – 7721Helical; Potential
Transmembrane103 – 12321Helical; Potential
Transmembrane146 – 16621Helical; Potential
Transmembrane184 – 20421Helical; Potential
Transmembrane235 – 25521Helical; Potential
Transmembrane269 – 28921Helical; Potential
Transmembrane311 – 33121Helical; Potential

Sites

Metal binding621Iron (heme A axial ligand) Probable
Metal binding2411Copper B Probable
Metal binding2451Copper B Probable
Metal binding2911Copper B Probable
Metal binding2921Copper B Probable

Amino acid modifications

Cross-link241 ↔ 2451'-histidyl-3'-tyrosine (His-Tyr) By similarity

Experimental info

Non-terminal residue3371

Sequences

Sequence LengthMass (Da)Tools
O03521 [UniParc].

Last modified July 1, 1997. Version 1.
Checksum: 92A8EBB2E2264C02

FASTA33736,766
        10         20         30         40         50         60 
MTFITRWLFS TNHKDIGTLY LIFGAWAGMV GTALSLLIRA ELGQPGTLLG DDQIYNVIVT 

        70         80         90        100        110        120 
AHAFVMIFFM VMPVMIGGFG NWLVPLMIGA PDMAFPRMNN MSFWLLPPSF LLLLASSTVE 

       130        140        150        160        170        180 
AGAGTGWTVY PPLAGNLAHA GASVDLAIFS LHLAGVSSIL GAINFITTAI NMKPPALTQY 

       190        200        210        220        230        240 
QTPLFVWSVL ITAILLLLSL PVLAAGITML LTDRNLNTTF FDPAGGGDPV LYQHLFWFFG 

       250        260        270        280        290        300 
HPEVYILILP GFGMISHVVT YYAGKKEPFG YMGMVWAMLS IGFLGFIVWA HHMFTVGMDV 

       310        320        330 
DTRAYFTSAT MIIAIPTGIK VFSWLATLHG GTIKWDP

« Hide

References

[1]"Phylogenetic relationships of the ratite birds: resolving conflicts between molecular and morphological data sets."
Lee K., Feinstein J., Cracraft J.
(In) Mindell D.P. (eds.); Avian molecular evolution and systematics, pp.1-1, Academic Press, New York (1997)
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].

Cross-references

Sequence databases

EMBL
GenBank
DDBJ		U76058 Genomic DNA. Translation: AAB61316.1.

3D structure databases

ProteinModelPortalO03521.
SMRO03521. Positions 3-337.
ModBaseSearch...

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Phylogenomic databases

HOVERGENHBG003841.

Enzyme and pathway databases

UniPathwayUPA00705.

Family and domain databases

Gene3D1.20.210.10. 1 hit.
InterProIPR000883. Cyt_c_Oxase_su1.
IPR023615. Cyt_c_Oxase_su1_BS.
IPR023616. Cyt_c_Oxase_su1_dom.
[Graphical view]
PANTHERPTHR10422. PTHR10422. 1 hit.
PfamPF00115. COX1. 1 hit.
[Graphical view]
PRINTSPR01165. CYCOXIDASEI.
SUPFAMSSF81442. COX1. 1 hit.
PROSITEPS50855. COX1. 1 hit.
PS00077. COX1_CUB. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameCOX1_CASBE
AccessionPrimary (citable) accession number: O03521
Entry history
Integrated into UniProtKB/Swiss-Prot: December 15, 1998
Last sequence update: July 1, 1997
Last modified: March 6, 2013
This is version 72 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Relevant documents

PATHWAY comments

Index of metabolic and biosynthesis pathways

SIMILARITY comments

Index of protein domains and families

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