ID   RSMH_LACLM              Reviewed;         317 AA.
AC   A2RLT4;
DT   03-NOV-2009, integrated into UniProtKB/Swiss-Prot.
DT   06-MAR-2007, sequence version 1.
DT   03-AUG-2022, entry version 86.
DE   RecName: Full=Ribosomal RNA small subunit methyltransferase H {ECO:0000255|HAMAP-Rule:MF_01007};
DE            EC=2.1.1.199 {ECO:0000255|HAMAP-Rule:MF_01007};
DE   AltName: Full=16S rRNA m(4)C1402 methyltransferase {ECO:0000255|HAMAP-Rule:MF_01007};
DE   AltName: Full=rRNA (cytosine-N(4)-)-methyltransferase RsmH {ECO:0000255|HAMAP-Rule:MF_01007};
GN   Name=rsmH {ECO:0000255|HAMAP-Rule:MF_01007}; Synonyms=mraW;
GN   OrderedLocusNames=llmg_1681;
OS   Lactococcus lactis subsp. cremoris (strain MG1363).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC   Lactococcus; Lactococcus cremoris subsp. cremoris.
OX   NCBI_TaxID=416870;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MG1363;
RX   PubMed=17307855; DOI=10.1128/jb.01768-06;
RA   Wegmann U., O'Connell-Motherway M., Zomer A., Buist G., Shearman C.,
RA   Canchaya C., Ventura M., Goesmann A., Gasson M.J., Kuipers O.P.,
RA   van Sinderen D., Kok J.;
RT   "The complete genome sequence of the lactic acid bacterial paradigm
RT   Lactococcus lactis subsp. cremoris MG1363.";
RL   J. Bacteriol. 189:3256-3270(2007).
CC   -!- FUNCTION: Specifically methylates the N4 position of cytidine in
CC       position 1402 (C1402) of 16S rRNA. {ECO:0000255|HAMAP-Rule:MF_01007}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=cytidine(1402) in 16S rRNA + S-adenosyl-L-methionine = H(+) +
CC         N(4)-methylcytidine(1402) in 16S rRNA + S-adenosyl-L-homocysteine;
CC         Xref=Rhea:RHEA:42928, Rhea:RHEA-COMP:10286, Rhea:RHEA-COMP:10287,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789,
CC         ChEBI:CHEBI:74506, ChEBI:CHEBI:82748; EC=2.1.1.199;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01007};
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01007}.
CC   -!- SIMILARITY: Belongs to the methyltransferase superfamily. RsmH family.
CC       {ECO:0000255|HAMAP-Rule:MF_01007}.
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DR   EMBL; AM406671; CAL98255.1; -; Genomic_DNA.
DR   RefSeq; WP_011835489.1; NZ_WJVF01000033.1.
DR   AlphaFoldDB; A2RLT4; -.
DR   SMR; A2RLT4; -.
DR   STRING; 416870.llmg_1681; -.
DR   EnsemblBacteria; CAL98255; CAL98255; llmg_1681.
DR   GeneID; 61109151; -.
DR   KEGG; llm:llmg_1681; -.
DR   eggNOG; COG0275; Bacteria.
DR   HOGENOM; CLU_038422_2_0_9; -.
DR   OMA; NPAKRTF; -.
DR   PhylomeDB; A2RLT4; -.
DR   BioCyc; LLAC416870:LLMG_RS08455-MON; -.
DR   Proteomes; UP000000364; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0071424; F:rRNA (cytosine-N4-)-methyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0070475; P:rRNA base methylation; IEA:UniProtKB-UniRule.
DR   Gene3D; 1.10.150.170; -; 1.
DR   Gene3D; 3.40.50.150; -; 1.
DR   HAMAP; MF_01007; 16SrRNA_methyltr_H; 1.
DR   InterPro; IPR002903; RsmH.
DR   InterPro; IPR023397; SAM-dep_MeTrfase_MraW_recog.
DR   InterPro; IPR029063; SAM-dependent_MTases_sf.
DR   PANTHER; PTHR11265; PTHR11265; 1.
DR   Pfam; PF01795; Methyltransf_5; 1.
DR   PIRSF; PIRSF004486; MraW; 1.
DR   SUPFAM; SSF53335; SSF53335; 1.
DR   SUPFAM; SSF81799; SSF81799; 1.
DR   TIGRFAMs; TIGR00006; TIGR00006; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Methyltransferase; rRNA processing; S-adenosyl-L-methionine;
KW   Transferase.
FT   CHAIN           1..317
FT                   /note="Ribosomal RNA small subunit methyltransferase H"
FT                   /id="PRO_0000386950"
FT   BINDING         37..39
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01007"
FT   BINDING         56
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01007"
FT   BINDING         85
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01007"
FT   BINDING         106
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01007"
FT   BINDING         113
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01007"
SQ   SEQUENCE   317 AA;  36050 MW;  68EDAD1A497AC5A4 CRC64;
     MPKTIAFKHD TVLLHETVDM LEVKPNGIYV DATLGGAGHS EYLLSKLTTG HLYSFDQDET
     AHANAKVRLS EQLAEDKVTL IKSNFRNLKS ALAELDITKI DGILYDLGVS SPQFDDSQRG
     FSYKKEARLD MRMDQSQTLS AYEVVNDYPY EALVRIFFRY GEDKFSKQIA RKIEQSRKIK
     PIETTIELAD LIKSALPQKE LKKKGHPAKR IFQAIRIEVN DELGAAEESI EQAIDLLKVD
     GRISVITFHS LEDRLTKSIF KEYSTVNVPK GLPMLPKEME AKLKLINRKP VLASEEELEF
     NNRAHSAKLR VAQKQRD