ID   UBIG_PROMH              Reviewed;         245 AA.
AC   B4EZ30;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   23-SEP-2008, sequence version 1.
DT   03-AUG-2022, entry version 85.
DE   RecName: Full=Ubiquinone biosynthesis O-methyltransferase {ECO:0000255|HAMAP-Rule:MF_00472};
DE   AltName: Full=2-polyprenyl-6-hydroxyphenol methylase {ECO:0000255|HAMAP-Rule:MF_00472};
DE            EC=2.1.1.222 {ECO:0000255|HAMAP-Rule:MF_00472};
DE   AltName: Full=3-demethylubiquinone 3-O-methyltransferase {ECO:0000255|HAMAP-Rule:MF_00472};
DE            EC=2.1.1.64 {ECO:0000255|HAMAP-Rule:MF_00472};
GN   Name=ubiG {ECO:0000255|HAMAP-Rule:MF_00472}; OrderedLocusNames=PMI1733;
OS   Proteus mirabilis (strain HI4320).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Morganellaceae; Proteus.
OX   NCBI_TaxID=529507;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=HI4320;
RX   PubMed=18375554; DOI=10.1128/jb.01981-07;
RA   Pearson M.M., Sebaihia M., Churcher C., Quail M.A., Seshasayee A.S.,
RA   Luscombe N.M., Abdellah Z., Arrosmith C., Atkin B., Chillingworth T.,
RA   Hauser H., Jagels K., Moule S., Mungall K., Norbertczak H.,
RA   Rabbinowitsch E., Walker D., Whithead S., Thomson N.R., Rather P.N.,
RA   Parkhill J., Mobley H.L.T.;
RT   "Complete genome sequence of uropathogenic Proteus mirabilis, a master of
RT   both adherence and motility.";
RL   J. Bacteriol. 190:4027-4037(2008).
CC   -!- FUNCTION: O-methyltransferase that catalyzes the 2 O-methylation steps
CC       in the ubiquinone biosynthetic pathway. {ECO:0000255|HAMAP-
CC       Rule:MF_00472}.
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:0000255|HAMAP-
CC         Rule:MF_00472};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a 3-(all-trans-polyprenyl)benzene-1,2-diol + S-adenosyl-L-
CC         methionine = a 2-methoxy-6-(all-trans-polyprenyl)phenol + H(+) + S-
CC         adenosyl-L-homocysteine; Xref=Rhea:RHEA:31411, Rhea:RHEA-COMP:9550,
CC         Rhea:RHEA-COMP:9551, ChEBI:CHEBI:15378, ChEBI:CHEBI:57856,
CC         ChEBI:CHEBI:59789, ChEBI:CHEBI:62729, ChEBI:CHEBI:62731;
CC         EC=2.1.1.222; Evidence={ECO:0000255|HAMAP-Rule:MF_00472};
CC   -!- PATHWAY: Cofactor biosynthesis; ubiquinone biosynthesis.
CC       {ECO:0000255|HAMAP-Rule:MF_00472}.
CC   -!- SIMILARITY: Belongs to the methyltransferase superfamily. UbiG/COQ3
CC       family. {ECO:0000255|HAMAP-Rule:MF_00472}.
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DR   EMBL; AM942759; CAR43608.1; -; Genomic_DNA.
DR   RefSeq; WP_004243650.1; NC_010554.1.
DR   AlphaFoldDB; B4EZ30; -.
DR   SMR; B4EZ30; -.
DR   STRING; 529507.PMI1733; -.
DR   EnsemblBacteria; CAR43608; CAR43608; PMI1733.
DR   GeneID; 6801432; -.
DR   KEGG; pmr:PMI1733; -.
DR   eggNOG; COG2227; Bacteria.
DR   HOGENOM; CLU_042432_5_0_6; -.
DR   OMA; RGTHDWE; -.
DR   UniPathway; UPA00232; -.
DR   Proteomes; UP000008319; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProt.
DR   GO; GO:0102208; F:2-polyprenyl-6-hydroxyphenol methylase activity; IEA:RHEA.
DR   GO; GO:0008425; F:2-polyprenyl-6-methoxy-1,4-benzoquinone methyltransferase activity; IEA:InterPro.
DR   GO; GO:0008689; F:3-demethylubiquinone-9 3-O-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   Gene3D; 3.40.50.150; -; 1.
DR   HAMAP; MF_00472; UbiG; 1.
DR   InterPro; IPR029063; SAM-dependent_MTases_sf.
DR   InterPro; IPR010233; UbiG_MeTrfase.
DR   SUPFAM; SSF53335; SSF53335; 1.
DR   TIGRFAMs; TIGR01983; UbiG; 1.
PE   3: Inferred from homology;
KW   Methyltransferase; Reference proteome; S-adenosyl-L-methionine;
KW   Transferase; Ubiquinone biosynthesis.
FT   CHAIN           1..245
FT                   /note="Ubiquinone biosynthesis O-methyltransferase"
FT                   /id="PRO_1000199689"
FT   BINDING         44
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00472"
FT   BINDING         64
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00472"
FT   BINDING         85
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00472"
FT   BINDING         129
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00472"
SQ   SEQUENCE   245 AA;  27636 MW;  D6F2672ADC10EBA0 CRC64;
     MNDKTTSLHA NVDQHEIDKF ESVASRWWDL EGEFKPLHRI NPLRLNYIQE RADGLFGKKV
     LDVGCGGGIL SESMARVGAE VTGLDMGKEP LEVARLHSLE TGIPVTYIQD TVENHAAEYP
     QRYDVVTCME MLEHVPDPSS IVRSCAKLVK PGGHVFFSTI NRNKKAWFML VVGAEYILNM
     VPKGTHDANK FIRPSELLSW VDETNLRSKN MIGLHYNPIT DKFRLAPNVD VNYMVHTQAT
     DNSDL