ID   RSMH_NOCSJ              Reviewed;         319 AA.
AC   A1SL88;
DT   03-NOV-2009, integrated into UniProtKB/Swiss-Prot.
DT   06-FEB-2007, sequence version 1.
DT   04-NOV-2026, entry version 93.
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=Noca_3071;
OS   Nocardioides sp. (strain ATCC BAA-499 / JS614).
OC   Bacteria; Bacillati; Actinomycetota; Actinomycetes; Propionibacteriales;
OC   Nocardioidaceae; Nocardioides.
OX   NCBI_TaxID=196162;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-499 / JS614;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA   Thompson L.S., Brettin T., Bruce D., Han C., Tapia R., Schmutz J.,
RA   Larimer F., Land M., Hauser L., Kyrpides N., Kim E., Mattes T., Gossett J.,
RA   Richardson P.;
RT   "Complete sequence of chromosome 1 of Nocardioides sp. JS614.";
RL   Submitted (DEC-2006) to the EMBL/GenBank/DDBJ databases.
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 = N(4)-
CC         methylcytidine(1402) in 16S rRNA + S-adenosyl-L-homocysteine + H(+);
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; CP000509; ABL82573.1; -; Genomic_DNA.
DR   RefSeq; WP_011756507.1; NC_008699.1.
DR   AlphaFoldDB; A1SL88; -.
DR   SMR; A1SL88; -.
DR   STRING; 196162.Noca_3071; -.
DR   KEGG; nca:Noca_3071; -.
DR   eggNOG; COG0275; Bacteria.
DR   HOGENOM; CLU_038422_0_0_11; -.
DR   OMA; AACTVWA; -.
DR   OrthoDB; 9806637at2; -.
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   FunFam; 1.10.150.170:FF:000001; Ribosomal RNA small subunit methyltransferase H; 1.
DR   Gene3D; 1.10.150.170; Putative methyltransferase TM0872, insert domain; 1.
DR   Gene3D; 3.40.50.150; Vaccinia Virus protein VP39; 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   NCBIfam; TIGR00006; 16S rRNA (cytosine(1402)-N(4))-methyltransferase RsmH; 1.
DR   PANTHER; PTHR11265:SF0; 12S RRNA N4-METHYLCYTIDINE METHYLTRANSFERASE; 1.
DR   PANTHER; PTHR11265; S-ADENOSYL-METHYLTRANSFERASE MRAW; 1.
DR   Pfam; PF01795; Methyltransf_5; 1.
DR   PIRSF; PIRSF004486; MraW; 1.
DR   SUPFAM; SSF81799; Putative methyltransferase TM0872, insert domain; 1.
DR   SUPFAM; SSF53335; S-adenosyl-L-methionine-dependent methyltransferases; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Methyltransferase; rRNA processing; S-adenosyl-L-methionine;
KW   Transferase.
FT   CHAIN           1..319
FT                   /note="Ribosomal RNA small subunit methyltransferase H"
FT                   /id="PRO_0000387011"
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         90
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01007"
FT   BINDING         104
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01007"
FT   BINDING         111
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01007"
SQ   SEQUENCE   319 AA;  34283 MW;  4898A6825014950F CRC64;
     MSGPSHVPVL LDRVVALLAP PLEREGSVLV DATLGLGGHT EAVLTRFDLA RVVGIDRDPE
     ALALAGRRLA PFGDRFTGVH AVYDELPDVL ARLGLDAVDA VLFDLGVSSM QLDVRERGFA
     YAEDAPLDMR MDGSTGPTAA DVLNTYAAAD LARILREYGE ERFARKIAAA VVRERAKEPF
     TRSGRLVELL YAEIPAPARR TGGHPAKRTF QALRMEVNDE LAVLRRAIPA AIDAIGVGGR
     VVVESYHSLE DRLVKQAFVA ASRLDVPEDL PFVPAGHEPA LRLVTRGAEK AGPEEIALNP
     RAASVRLRAI ERTSKGAAA
//