UniProtKB - Q2I3H2 (COX1_ELEMA)
Cytochrome c oxidase subunit 1
MT-CO1
Functioni
Catalytic activityi
Cofactori
Protein has several cofactor binding sites:- hemeBy similarityNote: Binds 2 heme A groups non-covalently per subunit.By similarity
- Cu cationBy similarityNote: Binds a copper B center.By similarity
: oxidative phosphorylation Pathwayi
This protein is involved in the pathway oxidative phosphorylation, which is part of Energy metabolism.By similarityView all proteins of this organism that are known to be involved in the pathway oxidative phosphorylation and in Energy metabolism.
Sites
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Metal bindingi | 40 | Sodium or calciumBy similarity | 1 | |
Metal bindingi | 45 | Sodium or calcium; via carbonyl oxygenBy similarity | 1 | |
Metal bindingi | 61 | Iron 1 (low-spin heme A axial ligand); via tele nitrogenBy similarity | 1 | |
Metal bindingi | 240 | Copper B; via pros nitrogenBy similarity | 1 | |
Binding sitei | 244 | OxygenBy similarity | 1 | |
Metal bindingi | 290 | Copper B; via tele nitrogenBy similarity | 1 | |
Metal bindingi | 291 | Copper B; via tele nitrogenBy similarity | 1 | |
Metal bindingi | 368 | Magnesium; shared with MT-CO2By similarity | 1 | |
Metal bindingi | 369 | Magnesium; shared with MT-CO2By similarity | 1 | |
Metal bindingi | 376 | Iron 2 (high-spin heme A3 axial ligand); via tele nitrogenBy similarity | 1 | |
Metal bindingi | 378 | Iron 1 (low-spin heme A axial ligand); via tele nitrogenBy similarity | 1 | |
Metal bindingi | 441 | Sodium or calcium; via carbonyl oxygenBy similarity | 1 |
GO - Molecular functioni
- cytochrome-c oxidase activity Source: InterPro
- heme binding Source: InterPro
- metal ion binding Source: UniProtKB-KW
GO - Biological processi
- aerobic respiration Source: InterPro
- oxidative phosphorylation Source: UniProtKB-UniPathway
Keywordsi
Molecular function | Translocase |
Biological process | Electron transport, Respiratory chain, Transport |
Ligand | Calcium, Copper, Heme, Iron, Magnesium, Metal-binding, Sodium |
Enzyme and pathway databases
UniPathwayi | UPA00705 |
Names & Taxonomyi
Protein namesi | Recommended name: Cytochrome c oxidase subunit 1 (EC:7.1.1.9)Alternative name(s): Cytochrome c oxidase polypeptide I |
Gene namesi | Name:MT-CO1 Synonyms:COI, COXI, MTCO1 |
Encoded oni | Mitochondrion |
Organismi | Elephas maximus (Indian elephant) |
Taxonomic identifieri | 9783 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Afrotheria › Proboscidea › Elephantidae › Elephas |
Subcellular locationi
Mitochondrion
- Mitochondrion inner membrane By similarity; Multi-pass membrane protein By similarity
Mitochondrion
- mitochondrial inner membrane Source: UniProtKB-SubCell
Other locations
- integral component of membrane Source: UniProtKB-KW
- respiratory chain complex IV Source: UniProtKB
Topology
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Topological domaini | 1 – 11 | Mitochondrial matrixBy similarityAdd BLAST | 11 | |
Transmembranei | 12 – 40 | Helical; Name=IBy similarityAdd BLAST | 29 | |
Topological domaini | 41 – 50 | Mitochondrial intermembraneBy similarity | 10 | |
Transmembranei | 51 – 86 | Helical; Name=IIBy similarityAdd BLAST | 36 | |
Topological domaini | 87 – 94 | Mitochondrial matrixBy similarity | 8 | |
Transmembranei | 95 – 117 | Helical; Name=IIIBy similarityAdd BLAST | 23 | |
Topological domaini | 118 – 140 | Mitochondrial intermembraneBy similarityAdd BLAST | 23 | |
Transmembranei | 141 – 170 | Helical; Name=IVBy similarityAdd BLAST | 30 | |
Topological domaini | 171 – 182 | Mitochondrial matrixBy similarityAdd BLAST | 12 | |
Transmembranei | 183 – 212 | Helical; Name=VBy similarityAdd BLAST | 30 | |
Topological domaini | 213 – 227 | Mitochondrial intermembraneBy similarityAdd BLAST | 15 | |
Transmembranei | 228 – 261 | Helical; Name=VIBy similarityAdd BLAST | 34 | |
Topological domaini | 262 – 269 | Mitochondrial matrixBy similarity | 8 | |
Transmembranei | 270 – 286 | Helical; Name=VIIBy similarityAdd BLAST | 17 | |
Topological domaini | 287 – 298 | Mitochondrial intermembraneBy similarityAdd BLAST | 12 | |
Transmembranei | 299 – 327 | Helical; Name=VIIIBy similarityAdd BLAST | 29 | |
Topological domaini | 328 – 335 | Mitochondrial matrixBy similarity | 8 | |
Transmembranei | 336 – 357 | Helical; Name=IXBy similarityAdd BLAST | 22 | |
Topological domaini | 358 – 370 | Mitochondrial intermembraneBy similarityAdd BLAST | 13 | |
Transmembranei | 371 – 400 | Helical; Name=XBy similarityAdd BLAST | 30 | |
Topological domaini | 401 – 406 | Mitochondrial matrixBy similarity | 6 | |
Transmembranei | 407 – 433 | Helical; Name=XIBy similarityAdd BLAST | 27 | |
Topological domaini | 434 – 446 | Mitochondrial intermembraneBy similarityAdd BLAST | 13 | |
Transmembranei | 447 – 478 | Helical; Name=XIIBy similarityAdd BLAST | 32 | |
Topological domaini | 479 – 515 | Mitochondrial matrixBy similarityAdd BLAST | 37 |
Keywords - Cellular componenti
Membrane, Mitochondrion, Mitochondrion inner membranePTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000232840 | 1 – 515 | Cytochrome c oxidase subunit 1Add BLAST | 515 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Cross-linki | 240 ↔ 244 | 1'-histidyl-3'-tyrosine (His-Tyr)By similarity |
Interactioni
Subunit structurei
Component of the cytochrome c oxidase (complex IV, CIV), a multisubunit enzyme composed of 14 subunits. The complex is composed of a catalytic core of 3 subunits MT-CO1, MT-CO2 and MT-CO3, encoded in the mitochondrial DNA, and 11 supernumerary subunits COX4I, COX5A, COX5B, COX6A, COX6B, COX6C, COX7A, COX7B, COX7C, COX8 and NDUFA4, which are encoded in the nuclear genome. The complex exists as a monomer or a dimer and forms supercomplexes (SCs) in the inner mitochondrial membrane with NADH-ubiquinone oxidoreductase (complex I, CI) and ubiquinol-cytochrome c oxidoreductase (cytochrome b-c1 complex, complex III, CIII), resulting in different assemblies (supercomplex SCI1III2IV1 and megacomplex MCI2III2IV2) (By similarity). As a newly synthesized protein, rapidly incorporates into a multi-subunit assembly intermediate in the inner membrane, called MITRAC (mitochondrial translation regulation assembly intermediate of cytochrome c oxidase) complex, whose core components are COA3/MITRAC12 and COX14. Within the MITRAC complex, interacts with COA3 and with SMIM20/MITRAC7; the interaction with SMIM20 stabilizes the newly synthesized MT-CO1 and prevents its premature turnover.
Interacts with TMEM177 in a COX20-dependent manner (By similarity).
By similarityFamily & Domainsi
Sequence similaritiesi
Keywords - Domaini
Transmembrane, Transmembrane helixFamily and domain databases
CDDi | cd01663, Cyt_c_Oxidase_I, 1 hit |
Gene3Di | 1.20.210.10, 1 hit |
InterProi | View 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 |
PANTHERi | PTHR10422, PTHR10422, 1 hit |
Pfami | View protein in Pfam PF00115, COX1, 1 hit |
PRINTSi | PR01165, CYCOXIDASEI |
SUPFAMi | SSF81442, SSF81442, 1 hit |
PROSITEi | View protein in PROSITE PS50855, COX1, 1 hit PS00077, COX1_CUB, 1 hit |
i Sequence
Sequence statusi: Complete.
10 20 30 40 50
MFANRWLYST NHKDIGTLYL LFGAWAGMVG TAFSILIRAE LGQPGSLLGD
60 70 80 90 100
DQIYNVIVTA HAFVMIFFMV MPIMIGGFGN WLIPLMIGAP DMAFPRMNNM
110 120 130 140 150
SFWLLPPSFL LLLASSMVEA GTGTGWTVYP PLAGNLAHAG ASVDLTIFSL
160 170 180 190 200
HLAGVSSILS AINFITTIIN MKPPAMSQYH MPLFVWSILV TAVLLLLSLP
210 220 230 240 250
VLAAGITMLL TDRNLNTTFF DPAGGGDPVL YQHLFWFFGH PEVYILILPG
260 270 280 290 300
FGMVSHIVTY YSGKKEPFGY MGMVWAMMSI GFLGFIVWAH HMFTVGMDVD
310 320 330 340 350
TRAYFTSATM IIAIPTGVKV FSWLATLHGG NIKWSPAMMW ALGFIFLFTI
360 370 380 390 400
GGLTGIVLAN SSLDIVLHDT YYVVAHFHYV LSMGAVFAIM GGFIHWFPLF
410 420 430 440 450
SGYTLNYTWA KIQFLVMFIG VNLTFFPQHF LGLSGMPRRY SDYPDAYTAW
460 470 480 490 500
NTASSMGSFI SLVAVILMVF MIWEAFASKR EVSMMELMTT NVEWLNGCPP
510
PHHTFEEPAY VKSNS
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | DQ316068 Genomic DNA Translation: ABC17893.1 |
RefSeqi | YP_626369.1, NC_005129.2 |
Genome annotation databases
GeneIDi | 2610363 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | DQ316068 Genomic DNA Translation: ABC17893.1 |
RefSeqi | YP_626369.1, NC_005129.2 |
3D structure databases
SMRi | Q2I3H2 |
ModBasei | Search... |
Genome annotation databases
GeneIDi | 2610363 |
Organism-specific databases
CTDi | 4512 |
Enzyme and pathway databases
UniPathwayi | UPA00705 |
Family and domain databases
CDDi | cd01663, Cyt_c_Oxidase_I, 1 hit |
Gene3Di | 1.20.210.10, 1 hit |
InterProi | View 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 |
PANTHERi | PTHR10422, PTHR10422, 1 hit |
Pfami | View protein in Pfam PF00115, COX1, 1 hit |
PRINTSi | PR01165, CYCOXIDASEI |
SUPFAMi | SSF81442, SSF81442, 1 hit |
PROSITEi | View protein in PROSITE PS50855, COX1, 1 hit PS00077, COX1_CUB, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | COX1_ELEMA | |
Accessioni | Q2I3H2Primary (citable) accession number: Q2I3H2 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | April 18, 2006 |
Last sequence update: | March 7, 2006 | |
Last modified: | June 17, 2020 | |
This is version 64 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Chordata Protein Annotation Program |
Miscellaneousi
Documents
- PATHWAY comments
Index of metabolic and biosynthesis pathways - SIMILARITY comments
Index of protein domains and families