ID   RLMB_NITEU              Reviewed;         260 AA.
AC   Q82XD1;
DT   27-SEP-2004, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2003, sequence version 1.
DT   03-AUG-2022, entry version 97.
DE   RecName: Full=23S rRNA (guanosine-2'-O-)-methyltransferase RlmB {ECO:0000255|HAMAP-Rule:MF_01887};
DE            EC=2.1.1.185 {ECO:0000255|HAMAP-Rule:MF_01887};
DE   AltName: Full=23S rRNA (guanosine2251 2'-O)-methyltransferase {ECO:0000255|HAMAP-Rule:MF_01887};
DE   AltName: Full=23S rRNA Gm2251 2'-O-methyltransferase {ECO:0000255|HAMAP-Rule:MF_01887};
GN   Name=rlmB {ECO:0000255|HAMAP-Rule:MF_01887}; OrderedLocusNames=NE0351;
OS   Nitrosomonas europaea (strain ATCC 19718 / CIP 103999 / KCTC 2705 / NBRC
OS   14298).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Nitrosomonadales;
OC   Nitrosomonadaceae; Nitrosomonas.
OX   NCBI_TaxID=228410;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 19718 / CIP 103999 / KCTC 2705 / NBRC 14298;
RX   PubMed=12700255; DOI=10.1128/jb.185.9.2759-2773.2003;
RA   Chain P., Lamerdin J.E., Larimer F.W., Regala W., Lao V., Land M.L.,
RA   Hauser L., Hooper A.B., Klotz M.G., Norton J., Sayavedra-Soto L.A.,
RA   Arciero D.M., Hommes N.G., Whittaker M.M., Arp D.J.;
RT   "Complete genome sequence of the ammonia-oxidizing bacterium and obligate
RT   chemolithoautotroph Nitrosomonas europaea.";
RL   J. Bacteriol. 185:2759-2773(2003).
CC   -!- FUNCTION: Specifically methylates the ribose of guanosine 2251 in 23S
CC       rRNA. {ECO:0000255|HAMAP-Rule:MF_01887}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=guanosine(2251) in 23S rRNA + S-adenosyl-L-methionine = 2'-O-
CC         methylguanosine(2251) in 23S rRNA + H(+) + S-adenosyl-L-homocysteine;
CC         Xref=Rhea:RHEA:24140, Rhea:RHEA-COMP:10239, Rhea:RHEA-COMP:10241,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789,
CC         ChEBI:CHEBI:74269, ChEBI:CHEBI:74445; EC=2.1.1.185;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01887};
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01887}.
CC   -!- SIMILARITY: Belongs to the class IV-like SAM-binding methyltransferase
CC       superfamily. RNA methyltransferase TrmH family. RlmB subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01887}.
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DR   EMBL; AL954747; CAD84262.1; -; Genomic_DNA.
DR   RefSeq; WP_011110986.1; NC_004757.1.
DR   AlphaFoldDB; Q82XD1; -.
DR   SMR; Q82XD1; -.
DR   STRING; 228410.NE0351; -.
DR   EnsemblBacteria; CAD84262; CAD84262; NE0351.
DR   KEGG; neu:NE0351; -.
DR   eggNOG; COG0566; Bacteria.
DR   HOGENOM; CLU_021322_0_1_4; -.
DR   OMA; QVPPYEY; -.
DR   OrthoDB; 1422015at2; -.
DR   PhylomeDB; Q82XD1; -.
DR   Proteomes; UP000001416; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0003723; F:RNA binding; IEA:InterPro.
DR   GO; GO:0070039; F:rRNA (guanosine-2'-O-)-methyltransferase activity; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.30.1330.30; -; 1.
DR   Gene3D; 3.40.1280.10; -; 1.
DR   HAMAP; MF_01887; 23SrRNA_methyltr_B; 1.
DR   InterPro; IPR024915; 23S_rRNA_MeTrfase_RlmB.
DR   InterPro; IPR029028; Alpha/beta_knot_MTases.
DR   InterPro; IPR029064; L30e-like.
DR   InterPro; IPR004441; rRNA_MeTrfase_TrmH.
DR   InterPro; IPR001537; SpoU_MeTrfase.
DR   InterPro; IPR013123; SpoU_subst-bd.
DR   InterPro; IPR029026; tRNA_m1G_MTases_N.
DR   PANTHER; PTHR46429; PTHR46429; 1.
DR   Pfam; PF00588; SpoU_methylase; 1.
DR   Pfam; PF08032; SpoU_sub_bind; 1.
DR   SMART; SM00967; SpoU_sub_bind; 1.
DR   SUPFAM; SSF55315; SSF55315; 1.
DR   SUPFAM; SSF75217; SSF75217; 1.
DR   TIGRFAMs; TIGR00186; rRNA_methyl_3; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Methyltransferase; Reference proteome; rRNA processing;
KW   S-adenosyl-L-methionine; Transferase.
FT   CHAIN           1..260
FT                   /note="23S rRNA (guanosine-2'-O-)-methyltransferase RlmB"
FT                   /id="PRO_0000159793"
FT   BINDING         197
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01887"
FT   BINDING         217
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01887"
FT   BINDING         226
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01887"
SQ   SEQUENCE   260 AA;  28304 MW;  ABFEBCCB06C10E33 CRC64;
     MTHSQYIFGF HAITSRLRQH PDSIKEIYLD TNRHDQRARD LMSLAETTST RLILCEQDRL
     CKMTGTTRHQ GVAAHVTKLR RYATLEDLLE GLTEPALLLV LDGVKDPHNL GACLRVADAF
     GVHAVVVPKD RAVGLSATVH KVASGAVDTV PFFAVTNLAR TLRELKEMGL WIVGTAADAP
     DTLDSVTLTR PLAWVLGAED GGMRRLTREA CDLLVSIPMS GSIESLNVSV SAGICLFETF
     RQHSQRTGSG LNVPAPKNAV