ID F7E229_XENTR Unreviewed; 346 AA.
AC F7E229;
DT 27-JUL-2011, integrated into UniProtKB/TrEMBL.
DT 02-JUN-2021, sequence version 4.
DT 27-MAR-2024, entry version 73.
DE RecName: Full=Ubiquinone biosynthesis O-methyltransferase, mitochondrial {ECO:0000256|HAMAP-Rule:MF_03190};
DE AltName: Full=3-demethylubiquinol 3-O-methyltransferase {ECO:0000256|HAMAP-Rule:MF_03190};
DE EC=2.1.1.64 {ECO:0000256|HAMAP-Rule:MF_03190};
DE AltName: Full=Polyprenyldihydroxybenzoate methyltransferase {ECO:0000256|HAMAP-Rule:MF_03190};
DE EC=2.1.1.114 {ECO:0000256|HAMAP-Rule:MF_03190};
GN Name=coq3 {ECO:0000313|Ensembl:ENSXETP00000001779,
GN ECO:0000313|RefSeq:NP_001184017.1,
GN ECO:0000313|Xenbase:XB-GENE-985854};
GN Synonyms=COQ3 {ECO:0000256|HAMAP-Rule:MF_03190};
OS Xenopus tropicalis (Western clawed frog) (Silurana tropicalis).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Amphibia;
OC Batrachia; Anura; Pipoidea; Pipidae; Xenopodinae; Xenopus; Silurana.
OX NCBI_TaxID=8364 {ECO:0000313|Ensembl:ENSXETP00000001779};
RN [1] {ECO:0000313|Ensembl:ENSXETP00000001779}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Nigerian {ECO:0000313|Ensembl:ENSXETP00000001779};
RX PubMed=20431018; DOI=10.1126/science.1183670;
RA Hellsten U., Harland R.M., Gilchrist M.J., Hendrix D., Jurka J.,
RA Kapitonov V., Ovcharenko I., Putnam N.H., Shu S., Taher L., Blitz I.L.,
RA Blumberg B., Dichmann D.S., Dubchak I., Amaya E., Detter J.C., Fletcher R.,
RA Gerhard D.S., Goodstein D., Graves T., Grigoriev I.V., Grimwood J.,
RA Kawashima T., Lindquist E., Lucas S.M., Mead P.E., Mitros T., Ogino H.,
RA Ohta Y., Poliakov A.V., Pollet N., Robert J., Salamov A., Sater A.K.,
RA Schmutz J., Terry A., Vize P.D., Warren W.C., Wells D., Wills A.,
RA Wilson R.K., Zimmerman L.B., Zorn A.M., Grainger R., Grammer T.,
RA Khokha M.K., Richardson P.M., Rokhsar D.S.;
RT "The genome of the Western clawed frog Xenopus tropicalis.";
RL Science 328:633-636(2010).
RN [2] {ECO:0000313|Ensembl:ENSXETP00000001779}
RP IDENTIFICATION.
RG Ensembl;
RL Submitted (JUN-2011) to UniProtKB.
RN [3] {ECO:0000313|RefSeq:NP_001184017.1}
RP IDENTIFICATION.
RG RefSeq;
RL Submitted (NOV-2023) to UniProtKB.
CC -!- FUNCTION: O-methyltransferase that catalyzes the 2 O-methylation steps
CC in the ubiquinone biosynthetic pathway. {ECO:0000256|HAMAP-
CC Rule:MF_03190}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=3,4-dihydroxy-5-all-trans-polyprenylbenzoate + S-adenosyl-L-
CC methionine = 3-methoxy,4-hydroxy-5-all-trans-polyprenylbenzoate +
CC H(+) + S-adenosyl-L-homocysteine; Xref=Rhea:RHEA:44452, Rhea:RHEA-
CC COMP:10930, Rhea:RHEA-COMP:10931, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:57856, ChEBI:CHEBI:59789, ChEBI:CHEBI:64694,
CC ChEBI:CHEBI:84443; EC=2.1.1.114; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_03190};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a 3-demethylubiquinol + S-adenosyl-L-methionine = a ubiquinol
CC + H(+) + S-adenosyl-L-homocysteine; Xref=Rhea:RHEA:44380, Rhea:RHEA-
CC COMP:9566, Rhea:RHEA-COMP:10914, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:17976, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789,
CC ChEBI:CHEBI:84422; EC=2.1.1.64; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_03190};
CC -!- PATHWAY: Cofactor biosynthesis; ubiquinone biosynthesis.
CC {ECO:0000256|HAMAP-Rule:MF_03190}.
CC -!- SUBUNIT: Component of a multi-subunit COQ enzyme complex, composed of
CC at least COQ3, COQ4, COQ5, COQ6, COQ7 and COQ9. {ECO:0000256|HAMAP-
CC Rule:MF_03190}.
CC -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane {ECO:0000256|HAMAP-
CC Rule:MF_03190}; Peripheral membrane protein {ECO:0000256|HAMAP-
CC Rule:MF_03190}; Matrix side {ECO:0000256|HAMAP-Rule:MF_03190}.
CC -!- SIMILARITY: Belongs to the class I-like SAM-binding methyltransferase
CC superfamily. UbiG/COQ3 family. {ECO:0000256|HAMAP-Rule:MF_03190}.
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DR RefSeq; NP_001184017.1; NM_001197088.1.
DR Ensembl; ENSXETT00000001779; ENSXETP00000001779; ENSXETG00000000799.
DR GeneID; 100486084; -.
DR KEGG; xtr:100486084; -.
DR AGR; Xenbase:XB-GENE-5867993; -.
DR AGR; Xenbase:XB-GENE-985854; -.
DR CTD; 51805; -.
DR Xenbase; XB-GENE-985854; coq3.
DR eggNOG; KOG1270; Eukaryota.
DR OMA; LASRWWD; -.
DR OrthoDB; 5401138at2759; -.
DR TreeFam; TF314553; -.
DR Reactome; R-XTR-2142789; Ubiquinol biosynthesis.
DR UniPathway; UPA00232; -.
DR Proteomes; UP000008143; Chromosome 5.
DR Bgee; ENSXETG00000000799; Expressed in skeletal muscle tissue and 13 other cell types or tissues.
DR GO; GO:0031314; C:extrinsic component of mitochondrial inner membrane; IEA:UniProtKB-UniRule.
DR GO; GO:0008425; F:2-polyprenyl-6-methoxy-1,4-benzoquinone methyltransferase activity; IEA:InterPro.
DR GO; GO:0061542; F:3-demethylubiquinol-n 3-O-methyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0004395; F:hexaprenyldihydroxybenzoate methyltransferase activity; IEA:UniProtKB-EC.
DR GO; GO:0032259; P:methylation; IEA:UniProtKB-KW.
DR GO; GO:0006744; P:ubiquinone biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd02440; AdoMet_MTases; 1.
DR Gene3D; 3.40.50.150; Vaccinia Virus protein VP39; 1.
DR HAMAP; MF_00472; UbiG; 1.
DR InterPro; IPR029063; SAM-dependent_MTases_sf.
DR InterPro; IPR010233; UbiG_MeTrfase.
DR NCBIfam; TIGR01983; UbiG; 1.
DR PANTHER; PTHR43464; METHYLTRANSFERASE; 1.
DR PANTHER; PTHR43464:SF19; UBIQUINONE BIOSYNTHESIS O-METHYLTRANSFERASE, MITOCHONDRIAL; 1.
DR Pfam; PF13489; Methyltransf_23; 1.
DR SUPFAM; SSF53335; S-adenosyl-L-methionine-dependent methyltransferases; 1.
PE 3: Inferred from homology;
KW Membrane {ECO:0000256|HAMAP-Rule:MF_03190};
KW Methyltransferase {ECO:0000256|ARBA:ARBA00022603, ECO:0000256|HAMAP-
KW Rule:MF_03190}; Mitochondrion {ECO:0000256|HAMAP-Rule:MF_03190};
KW Mitochondrion inner membrane {ECO:0000256|HAMAP-Rule:MF_03190};
KW Reference proteome {ECO:0000313|Proteomes:UP000008143};
KW S-adenosyl-L-methionine {ECO:0000256|ARBA:ARBA00022691, ECO:0000256|HAMAP-
KW Rule:MF_03190};
KW Signal {ECO:0000256|SAM:SignalP, ECO:0000313|RefSeq:NP_001184017.1};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_03190}; Ubiquinone {ECO:0000313|RefSeq:NP_001184017.1};
KW Ubiquinone biosynthesis {ECO:0000256|ARBA:ARBA00022688, ECO:0000256|HAMAP-
KW Rule:MF_03190}.
FT SIGNAL 1..17
FT /evidence="ECO:0000256|SAM:SignalP"
FT CHAIN 18..346
FT /note="Ubiquinone biosynthesis O-methyltransferase,
FT mitochondrial"
FT /evidence="ECO:0000256|SAM:SignalP,
FT ECO:0000313|RefSeq:NP_001184017.1"
FT /id="PRO_5033207704"
FT REGION 325..346
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 327..346
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 112
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03190"
FT BINDING 142
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03190"
FT BINDING 163
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03190"
FT BINDING 210
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03190"
SQ SEQUENCE 346 AA; 38532 MW; 4C9B9DB02A61B549 CRC64;
MATWFGRFCL SLRPVRALYG LRNSCTAAYR GYNTNRATCS LPYLQRGSCL LQDRSGSCNE
NENRGNICHN FRMYATSQTV DPLEMRKFQA WVQKWWDEEG MFSVLHAMND IRVPFIRDSL
MSRNYEHDVG CPLSGVNILD VGCGGGLLSE PLGRLGASVT GIDPLEDNIK IAAQHKSFDP
VLDKQVQYKS CTVEELVDGH LGYFDAIVAS EVLEHVADVE SFIQSCFQVL KPGGSLFVTT
INKTQLSYAL AIVVAEKILG IAPEGTHDWE KFIHPEELER LLESNGFVVE SLKGMLYNPL
SGSWSWISDT SVNYAMHALK TVAQEQPTDM GGESEQEQQK VAEASV
//