ID   UBIG_SALG2              Reviewed;         242 AA.
AC   B5RCA1;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   04-NOV-2008, sequence version 1.
DT   03-AUG-2022, entry version 79.
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=SG2304;
OS   Salmonella gallinarum (strain 287/91 / NCTC 13346).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Salmonella.
OX   NCBI_TaxID=550538;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=287/91 / NCTC 13346;
RX   PubMed=18583645; DOI=10.1101/gr.077404.108;
RA   Thomson N.R., Clayton D.J., Windhorst D., Vernikos G., Davidson S.,
RA   Churcher C., Quail M.A., Stevens M., Jones M.A., Watson M., Barron A.,
RA   Layton A., Pickard D., Kingsley R.A., Bignell A., Clark L., Harris B.,
RA   Ormond D., Abdellah Z., Brooks K., Cherevach I., Chillingworth T.,
RA   Woodward J., Norberczak H., Lord A., Arrowsmith C., Jagels K., Moule S.,
RA   Mungall K., Saunders M., Whitehead S., Chabalgoity J.A., Maskell D.,
RA   Humphreys T., Roberts M., Barrow P.A., Dougan G., Parkhill J.;
RT   "Comparative genome analysis of Salmonella enteritidis PT4 and Salmonella
RT   gallinarum 287/91 provides insights into evolutionary and host adaptation
RT   pathways.";
RL   Genome Res. 18:1624-1637(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; AM933173; CAR38135.1; -; Genomic_DNA.
DR   RefSeq; WP_001091008.1; NC_011274.1.
DR   AlphaFoldDB; B5RCA1; -.
DR   SMR; B5RCA1; -.
DR   EnsemblBacteria; CAR38135; CAR38135; SG2304.
DR   KEGG; seg:SG2304; -.
DR   HOGENOM; CLU_042432_5_0_6; -.
DR   OMA; RGTHDWE; -.
DR   UniPathway; UPA00232; -.
DR   Proteomes; UP000008321; 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; S-adenosyl-L-methionine; Transferase;
KW   Ubiquinone biosynthesis.
FT   CHAIN           1..242
FT                   /note="Ubiquinone biosynthesis O-methyltransferase"
FT                   /id="PRO_1000199698"
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   242 AA;  26886 MW;  8A01F954EB574843 CRC64;
     MNTEKPSVAH NVDHNEIAKF EAVASRWWDL EGEFKPLHRI NPLRLGYITE RSGGLFGKKV
     LDVGCGGGIL AESMAREGAT VTGLDMGFEP LQVAKLHALE SGIEVEYMQE TVEEHAAKHA
     QQYDVVTCME MLEHVPDPQS VVHACAQLVK PGGEVFFSTL NRNGKSWLMA VVGAEYILRM
     VPKGTHDVKK FIKPAELLSW VDETVLKEQH ITGLHYNPIT NTFKLGPGVD VNYMLHTRAK
     KA