ID   UBIG_COXBR              Reviewed;         234 AA.
AC   A9NBI0;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   05-FEB-2008, sequence version 1.
DT   03-AUG-2022, entry version 75.
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};
GN   OrderedLocusNames=COXBURSA331_A0458;
OS   Coxiella burnetii (strain RSA 331 / Henzerling II).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Legionellales; Coxiellaceae;
OC   Coxiella.
OX   NCBI_TaxID=360115;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=RSA 331 / Henzerling II;
RA   Seshadri R., Samuel J.E.;
RT   "Genome sequencing of phylogenetically and phenotypically diverse Coxiella
RT   burnetii isolates.";
RL   Submitted (NOV-2007) to the EMBL/GenBank/DDBJ databases.
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; CP000890; ABX77424.1; -; Genomic_DNA.
DR   RefSeq; WP_010957522.1; NC_010117.1.
DR   AlphaFoldDB; A9NBI0; -.
DR   SMR; A9NBI0; -.
DR   PRIDE; A9NBI0; -.
DR   KEGG; cbs:COXBURSA331_A0458; -.
DR   HOGENOM; CLU_042432_5_0_6; -.
DR   OMA; RGTHDWE; -.
DR   UniPathway; UPA00232; -.
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; IPR013216; Methyltransf_11.
DR   InterPro; IPR029063; SAM-dependent_MTases_sf.
DR   InterPro; IPR010233; UbiG_MeTrfase.
DR   Pfam; PF08241; Methyltransf_11; 1.
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..234
FT                   /note="Ubiquinone biosynthesis O-methyltransferase"
FT                   /id="PRO_1000081218"
FT   BINDING         40
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00472"
FT   BINDING         59
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         123
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00472"
SQ   SEQUENCE   234 AA;  26485 MW;  28B2169D8B59AA45 CRC64;
     MTLSEQNIDK EELAKFSDLA QDWWNPAGKM KPLHLINPVR LKYIEQQITL KGKHVLDVGC
     GGGLLSEALA KHGAIVTGVD MSESLIDVAK NHAEQQQLNI NYQCQDIEIL TKDAQRFDII
     TCMELLEHVP DPQRMIKNCA ALIKPGGKLF FSTINRNFKA YLYTIVGAEY VFNLLPKGTH
     DYAQFIRPSE LTQWAESGGL RLLDITGIHY HPLKNEFDLS RDVSVNYLAC FTHE