Q6EGJ1 (COX1_CRANE) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended 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 on

Mitochondrion

Organism

Cratogeomys neglectus (Queretaro pocket gopher) (Pappogeomys neglectus)

Taxonomic identifier

76342 [NCBI]

Taxonomic lineage

Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Sciurognathi › Geomyidae › Cratogeomys

Protein attributes

Sequence length	516 AA.
Sequence status	Complete.
Protein existence	Inferred 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.

Ontologies

Keywords
Biological process	Electron transport Respiratory chain Transport
Cellular component	Membrane Mitochondrion Mitochondrion inner membrane
Domain	Transmembrane Transmembrane helix
Ligand	Copper Heme Iron Metal-binding
Molecular function	Oxidoreductase
Gene Ontology (GO)
Biological process	aerobic respiration Inferred from electronic annotation. Source: InterPro electron transport chain Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	integral to membrane Inferred from electronic annotation. Source: UniProtKB-KW mitochondrial inner membrane Inferred from electronic annotation. Source: UniProtKB-SubCell respiratory chain Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	cytochrome-c oxidase activity Inferred from electronic annotation. Source: EC electron carrier activity Inferred from electronic annotation. Source: InterPro heme binding Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 516	516	Cytochrome c oxidase subunit 1		PRO_0000254908
Regions
	Transmembrane	17 – 37	21	Helical; Potential
	Transmembrane	63 – 83	21	Helical; Potential
	Transmembrane	102 – 122	21	Helical; Potential
	Transmembrane	145 – 165	21	Helical; Potential
	Transmembrane	183 – 203	21	Helical; Potential
	Transmembrane	234 – 254	21	Helical; Potential
	Transmembrane	268 – 288	21	Helical; Potential
	Transmembrane	310 – 330	21	Helical; Potential
	Transmembrane	338 – 358	21	Helical; Potential
	Transmembrane	380 – 400	21	Helical; Potential
	Transmembrane	414 – 434	21	Helical; Potential
	Transmembrane	453 – 473	21	Helical; Potential
Sites
	Metal binding	61	1	Iron (heme A axial ligand) Probable
	Metal binding	240	1	Copper B Probable
	Metal binding	244	1	Copper B Probable
	Metal binding	290	1	Copper B Probable
	Metal binding	291	1	Copper B Probable
	Metal binding	376	1	Iron (heme A3 axial ligand) Probable
	Metal binding	378	1	Iron (heme A axial ligand) Probable
Amino acid modifications
	Cross-link	240 ↔ 244		1'-histidyl-3'-tyrosine (His-Tyr) By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q6EGJ1 [UniParc]. Last modified August 16, 2004. Version 1. Checksum: FDAE9544F31E83CA	FASTA	516	57,141
	10 20 30 40 50 60 MFINRWLFST NHKDIGTLYM IFGAWAGMVG TGLSILIRAE LGQPGSLLGD DQIYNVVVTA 70 80 90 100 110 120 HAFVMIFFMV MPIMIGGFGN WLVPLMIGAP DMAFPRMNNM SFWLLPPSFL LLLSSSMVEA 130 140 150 160 170 180 GAGTGWTVYP PLAGNLAHAG ASVDLTIFSL HLAGVSSILG AINFITTIIN MKPPAITQYQ 190 200 210 220 230 240 TPLFVWSVMI TAILLLLSLP VLAAGITMLL TDRNLNTTFF DPAGGGDPIL YQHLFWFFGH 250 260 270 280 290 300 PEVYILILPG FGMISHIVTY YSGKKEPFGY MGMVWAMMSI GFLGFIVWAH HMFTVGMDVD 310 320 330 340 350 360 TRAYFTSATM IIAIPTGVKV FSWLATLHGG NIKWSPAMLW ALGFIFLFTI GGLTGIVLSN 370 380 390 400 410 420 SSLDIVLHDT YYVVAHFHYV LSMGAVFAIM GGFVHWFPLF TGYTLNDTWA KIHFTIMFVG 430 440 450 460 470 480 VNMTFFPQHF LGLAGMPRRY SDYPDAYTTW NTISSMGSFI SLTAVILMVF IIWEALASKR 490 500 510 VVKSIPLTST NLEWMHGCPP PFHTFEEPAF IKSSNK

References

[1]	"DNA data support a rapid radiation of pocket gopher genera." Spradling T.A., Brant S.V., Hafner M.S., Dickerson C.J. J. Mammal. Evol. 11:105-125(2004) Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].

Cross-references

Sequence databases
EMBL GenBank DDBJ	AY331073 Genomic DNA. Translation: AAR02574.1.
3D structure databases
HSSP	HSSP built from PDB template 2OCC based on UniProtKB P00396.
ProteinModelPortal	Q6EGJ1.
SMR	Q6EGJ1. Positions 1-511.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Phylogenomic databases
HOVERGEN	HBG003841.
Family and domain databases
InterPro	IPR000883. Cyt_c_Oxase_su1. IPR023615. Cyt_c_Oxase_su1_BS. IPR023616. Cyt_c_Oxase_su1_dom. [Graphical view]
Gene3D	G3DSA:1.20.210.10. COX1. 1 hit.
PANTHER	PTHR10422. COX1. 1 hit.
Pfam	PF00115. COX1. 1 hit. [Graphical view]
PRINTS	PR01165. CYCOXIDASEI.
SUPFAM	SSF81442. COX1. 1 hit.
PROSITE	PS50855. COX1. 1 hit. PS00077. COX1_CUB. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

COX1_CRANE

Accession

Primary (citable) accession number: Q6EGJ1

Entry history

Integrated into UniProtKB/Swiss-Prot:	October 31, 2006
Last sequence update:	August 16, 2004
Last modified:	May 31, 2011
This is version 37 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Chordata Protein Annotation Program