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Protein

Cytochrome c oxidase subunit 1

Gene

MT-CO1

Organism
Struthio camelus (Common ostrich)
Status
Reviewed-Annotation score: -Protein inferred from homologyi

Functioni

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 activityi

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

Pathwayi: oxidative phosphorylation

This protein is involved in the pathway oxidative phosphorylation, which is part of Energy metabolism.
View all proteins of this organism that are known to be involved in the pathway oxidative phosphorylation and in Energy metabolism.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi62Iron (heme A axial ligand)Curated1
Metal bindingi241Copper BCurated1
Metal bindingi245Copper BCurated1
Metal bindingi291Copper BCurated1
Metal bindingi292Copper BCurated1
Metal bindingi377Iron (heme A3 axial ligand)Curated1
Metal bindingi379Iron (heme A axial ligand)Curated1

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionOxidoreductase
Biological processElectron transport, Respiratory chain, Transport
LigandCopper, Heme, Iron, Metal-binding

Enzyme and pathway databases

UniPathwayiUPA00705

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome c oxidase subunit 1 (EC:1.9.3.1)
Alternative name(s):
Cytochrome c oxidase polypeptide I
Gene namesi
Name:MT-CO1
Synonyms:COI, COXI, MTCO1
Encoded oniMitochondrion
OrganismiStruthio camelus (Common ostrich)
Taxonomic identifieri8801 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiArchelosauriaArchosauriaDinosauriaSaurischiaTheropodaCoelurosauriaAvesPalaeognathaeStruthioniformesStruthionidaeStruthio

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transmembranei18 – 38HelicalSequence analysisAdd BLAST21
Transmembranei57 – 77HelicalSequence analysisAdd BLAST21
Transmembranei103 – 123HelicalSequence analysisAdd BLAST21
Transmembranei146 – 166HelicalSequence analysisAdd BLAST21
Transmembranei184 – 204HelicalSequence analysisAdd BLAST21
Transmembranei235 – 255HelicalSequence analysisAdd BLAST21
Transmembranei269 – 289HelicalSequence analysisAdd BLAST21
Transmembranei311 – 331HelicalSequence analysisAdd BLAST21
Transmembranei339 – 359HelicalSequence analysisAdd BLAST21
Transmembranei381 – 401HelicalSequence analysisAdd BLAST21
Transmembranei415 – 435HelicalSequence analysisAdd BLAST21
Transmembranei457 – 477HelicalSequence analysisAdd BLAST21

Keywords - Cellular componenti

Membrane, Mitochondrion, Mitochondrion inner membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001834221 – 516Cytochrome c oxidase subunit 1Add BLAST516

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Cross-linki241 ↔ 2451'-histidyl-3'-tyrosine (His-Tyr)By similarity

Structurei

3D structure databases

ProteinModelPortaliO21399
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

HOVERGENiHBG003841

Family and domain databases

CDDicd01663 Cyt_c_Oxidase_I, 1 hit
Gene3Di1.20.210.10, 1 hit
InterProiView protein in InterPro
IPR023616 Cyt_c_oxase-like_su1_dom
IPR036927 Cyt_c_oxase-like_su1_sf
IPR000883 Cyt_C_Oxase_1
IPR023615 Cyt_c_Oxase_su1_BS
IPR033944 Cyt_c_oxase_su1_dom
PANTHERiPTHR10422 PTHR10422, 1 hit
PfamiView protein in Pfam
PF00115 COX1, 1 hit
PRINTSiPR01165 CYCOXIDASEI
SUPFAMiSSF81442 SSF81442, 1 hit
PROSITEiView protein in PROSITE
PS50855 COX1, 1 hit
PS00077 COX1_CUB, 1 hit

Sequencei

Sequence statusi: Complete.

O21399-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTFITRWLFS TNHKDIGTLY LIFGAWAGMV GTALSLLIRA ELGQPGTLLG
60 70 80 90 100
DDQIYNVIVT AHAFVMIFFM VMPVMIGGFG NWLVPLMIGA PDMAFPRMNN
110 120 130 140 150
MSFWLLPPSF LLLLASSTVE AGAGTGWTVY PPLAGNLAHA GASVDLAIFS
160 170 180 190 200
LHLAGVSSIL GAINFITTAI NMKPPALSQY QTPLFVWSVL ITAILLLLSL
210 220 230 240 250
PVLAAGITML LTDRNLNTTF FDPAGGGDPV LYQHLFWFFG HPEVYILILP
260 270 280 290 300
GFGIISHVVT YYAGKKEPFG YMGMVWAMLS IGFLGFIVWA HHMFTVGMDV
310 320 330 340 350
DTRAYFTSAT MIIAIPTGIK VFSWLATLHG GTIKWDPPIL WALGFIFLFT
360 370 380 390 400
IGGLTGIVLA NSSLDIALHD TYYVVAHFHY VLSMGAVFAI LAGFTHWFPL
410 420 430 440 450
FTGYTLHPTW AKAHFGVMFT GVNLTFFPQH FLGLAGMPRR YSDYPDAYTL
460 470 480 490 500
WNTMSSIGSL ISMTAVIMLM FIIWEAFSSK RKVLQPELIA TNIEWIHGCP
510
PPHHTFEEPA FVQVQE
Length:516
Mass (Da):56,932
Last modified:December 15, 1998 - v2
Checksum:i33FFEC4806D80856
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Y12025 Genomic DNA Translation: CAA72746.1
AF069429 Genomic DNA Translation: AAD09385.1
AF338715 Genomic DNA Translation: AAK53347.1
U76062 Genomic DNA Translation: AAB61328.1
PIRiC90612
T12411
RefSeqiNP_115443.1, NC_002785.1

Genome annotation databases

GeneIDi803279

Similar proteinsi

Entry informationi

Entry nameiCOX1_STRCA
AccessioniPrimary (citable) accession number: O21399
Secondary accession number(s): O03549
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 15, 1998
Last sequence update: December 15, 1998
Last modified: May 23, 2018
This is version 103 of the entry and version 2 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families
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