ID   UBIG_METSB              Reviewed;         256 AA.
AC   B8EI29;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   03-MAR-2009, sequence version 1.
DT   03-AUG-2022, entry version 72.
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=Msil_1561;
OS   Methylocella silvestris (strain DSM 15510 / CIP 108128 / LMG 27833 / NCIMB
OS   13906 / BL2).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Beijerinckiaceae; Methylocella.
OX   NCBI_TaxID=395965;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 15510 / CIP 108128 / LMG 27833 / NCIMB 13906 / BL2;
RX   PubMed=20472789; DOI=10.1128/jb.00506-10;
RA   Chen Y., Crombie A., Rahman M.T., Dedysh S.N., Liesack W., Stott M.B.,
RA   Alam M., Theisen A.R., Murrell J.C., Dunfield P.F.;
RT   "Complete genome sequence of the aerobic facultative methanotroph
RT   Methylocella silvestris BL2.";
RL   J. Bacteriol. 192:3840-3841(2010).
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; CP001280; ACK50511.1; -; Genomic_DNA.
DR   RefSeq; WP_012590581.1; NC_011666.1.
DR   AlphaFoldDB; B8EI29; -.
DR   SMR; B8EI29; -.
DR   STRING; 395965.Msil_1561; -.
DR   EnsemblBacteria; ACK50511; ACK50511; Msil_1561.
DR   KEGG; msl:Msil_1561; -.
DR   eggNOG; COG2227; Bacteria.
DR   HOGENOM; CLU_042432_2_1_5; -.
DR   OMA; RGTHDWE; -.
DR   OrthoDB; 1515497at2; -.
DR   UniPathway; UPA00232; -.
DR   Proteomes; UP000002257; 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..256
FT                   /note="Ubiquinone biosynthesis O-methyltransferase"
FT                   /id="PRO_1000135508"
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         80
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00472"
FT   BINDING         101
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00472"
FT   BINDING         144
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00472"
SQ   SEQUENCE   256 AA;  28129 MW;  3D3EFAE13D90485E CRC64;
     MAQREEAGPS SVDPEDVARF DRIGEDWWSA DGPMAALHKL NPVRVAYLRD LMSRHFRVEG
     LPRDRYAPRP LEGLRILDAG CGAGLLAEPL ARLGARVTAI DPAPRNIEVA RRHAEKSGLS
     IDYRMTTIEA LSGEAATFDA VLAMEVLEHV LDVAGFVRCC GALVRPGGLM FAATLNRTLK
     SFAFAIVGAE YVLGWAPRGT HDWRRFISPR ELARAMAAAD LSAFDETGVV FDPLQGGWRL
     AHDTDINYMM AASKRR