ID   UBIG_KLEP7              Reviewed;         242 AA.
AC   A6TBT7;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   21-AUG-2007, sequence version 1.
DT   03-AUG-2022, entry version 80.
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=KPN78578_25970; ORFNames=KPN_02641;
OS   Klebsiella pneumoniae subsp. pneumoniae (strain ATCC 700721 / MGH 78578).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Klebsiella/Raoultella group; Klebsiella.
OX   NCBI_TaxID=272620;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700721 / MGH 78578;
RG   The Klebsiella pneumonia Genome Sequencing Project;
RA   McClelland M., Sanderson E.K., Spieth J., Clifton W.S., Latreille P.,
RA   Sabo A., Pepin K., Bhonagiri V., Porwollik S., Ali J., Wilson R.K.;
RL   Submitted (SEP-2006) 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; CP000647; ABR78058.1; -; Genomic_DNA.
DR   RefSeq; WP_002913014.1; NC_009648.1.
DR   AlphaFoldDB; A6TBT7; -.
DR   SMR; A6TBT7; -.
DR   STRING; 272620.KPN_02641; -.
DR   jPOST; A6TBT7; -.
DR   EnsemblBacteria; ABR78058; ABR78058; KPN_02641.
DR   KEGG; kpn:KPN_02641; -.
DR   HOGENOM; CLU_042432_5_0_6; -.
DR   OMA; RGTHDWE; -.
DR   UniPathway; UPA00232; -.
DR   Proteomes; UP000000265; 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..242
FT                   /note="Ubiquinone biosynthesis O-methyltransferase"
FT                   /id="PRO_1000013903"
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;  26651 MW;  24FEA8AF8C570689 CRC64;
     MNAEKTSVAP NVDHAEIAKF EAVASRWWDL EGEFKPLHRI NPLRLGYIAE RSGGLFGKKV
     LDVGCGGGIL AESMAREGAT VTGLDMGAEP LQVARLHALE SGIQVDYVQE TVEEHAAKHP
     QQYDVVTCME MLEHVPDPQS VVHACARLVK PGGQVFFSTI NRNGKAWLMA VVGAEYVMKM
     VPKGTHDVKK FIKPAELLGW VDQTTLKEQH IIGLHYNPLT NTFKLAPGVD VNYMLHTTAK
     QD