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RLMN_CHRVO
ID   RLMN_CHRVO              Reviewed;         364 AA.
AC   Q7NS85;
DT   02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT   15-DEC-2003, sequence version 1.
DT   03-AUG-2022, entry version 115.
DE   RecName: Full=Dual-specificity RNA methyltransferase RlmN {ECO:0000255|HAMAP-Rule:MF_01849};
DE            EC=2.1.1.192 {ECO:0000255|HAMAP-Rule:MF_01849};
DE   AltName: Full=23S rRNA (adenine(2503)-C(2))-methyltransferase {ECO:0000255|HAMAP-Rule:MF_01849};
DE   AltName: Full=23S rRNA m2A2503 methyltransferase {ECO:0000255|HAMAP-Rule:MF_01849};
DE   AltName: Full=Ribosomal RNA large subunit methyltransferase N {ECO:0000255|HAMAP-Rule:MF_01849};
DE   AltName: Full=tRNA (adenine(37)-C(2))-methyltransferase {ECO:0000255|HAMAP-Rule:MF_01849};
DE   AltName: Full=tRNA m2A37 methyltransferase {ECO:0000255|HAMAP-Rule:MF_01849};
GN   Name=rlmN {ECO:0000255|HAMAP-Rule:MF_01849}; OrderedLocusNames=CV_3541;
OS   Chromobacterium violaceum (strain ATCC 12472 / DSM 30191 / JCM 1249 / NBRC
OS   12614 / NCIMB 9131 / NCTC 9757).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Neisseriales;
OC   Chromobacteriaceae; Chromobacterium.
OX   NCBI_TaxID=243365;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 12472 / DSM 30191 / JCM 1249 / NBRC 12614 / NCIMB 9131 / NCTC
RC   9757;
RX   PubMed=14500782; DOI=10.1073/pnas.1832124100;
RA   Vasconcelos A.T.R., de Almeida D.F., Hungria M., Guimaraes C.T.,
RA   Antonio R.V., Almeida F.C., de Almeida L.G.P., de Almeida R.,
RA   Alves-Gomes J.A., Andrade E.M., Araripe J., de Araujo M.F.F.,
RA   Astolfi-Filho S., Azevedo V., Baptista A.J., Bataus L.A.M., Batista J.S.,
RA   Belo A., van den Berg C., Bogo M., Bonatto S., Bordignon J., Brigido M.M.,
RA   Brito C.A., Brocchi M., Burity H.A., Camargo A.A., Cardoso D.D.P.,
RA   Carneiro N.P., Carraro D.M., Carvalho C.M.B., Cascardo J.C.M., Cavada B.S.,
RA   Chueire L.M.O., Creczynski-Pasa T.B., Cunha-Junior N.C., Fagundes N.,
RA   Falcao C.L., Fantinatti F., Farias I.P., Felipe M.S.S., Ferrari L.P.,
RA   Ferro J.A., Ferro M.I.T., Franco G.R., Freitas N.S.A., Furlan L.R.,
RA   Gazzinelli R.T., Gomes E.A., Goncalves P.R., Grangeiro T.B.,
RA   Grattapaglia D., Grisard E.C., Hanna E.S., Jardim S.N., Laurino J.,
RA   Leoi L.C.T., Lima L.F.A., Loureiro M.F., Lyra M.C.C.P., Madeira H.M.F.,
RA   Manfio G.P., Maranhao A.Q., Martins W.S., di Mauro S.M.Z.,
RA   de Medeiros S.R.B., Meissner R.V., Moreira M.A.M., Nascimento F.F.,
RA   Nicolas M.F., Oliveira J.G., Oliveira S.C., Paixao R.F.C., Parente J.A.,
RA   Pedrosa F.O., Pena S.D.J., Pereira J.O., Pereira M., Pinto L.S.R.C.,
RA   Pinto L.S., Porto J.I.R., Potrich D.P., Ramalho-Neto C.E., Reis A.M.M.,
RA   Rigo L.U., Rondinelli E., Santos E.B.P., Santos F.R., Schneider M.P.C.,
RA   Seuanez H.N., Silva A.M.R., da Silva A.L.C., Silva D.W., Silva R.,
RA   Simoes I.C., Simon D., Soares C.M.A., Soares R.B.A., Souza E.M.,
RA   Souza K.R.L., Souza R.C., Steffens M.B.R., Steindel M., Teixeira S.R.,
RA   Urmenyi T., Vettore A., Wassem R., Zaha A., Simpson A.J.G.;
RT   "The complete genome sequence of Chromobacterium violaceum reveals
RT   remarkable and exploitable bacterial adaptability.";
RL   Proc. Natl. Acad. Sci. U.S.A. 100:11660-11665(2003).
CC   -!- FUNCTION: Specifically methylates position 2 of adenine 2503 in 23S
CC       rRNA and position 2 of adenine 37 in tRNAs. m2A2503 modification seems
CC       to play a crucial role in the proofreading step occurring at the
CC       peptidyl transferase center and thus would serve to optimize ribosomal
CC       fidelity. {ECO:0000255|HAMAP-Rule:MF_01849}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=adenosine(2503) in 23S rRNA + 2 reduced [2Fe-2S]-[ferredoxin]
CC         + 2 S-adenosyl-L-methionine = 2-methyladenosine(2503) in 23S rRNA +
CC         5'-deoxyadenosine + L-methionine + 2 oxidized [2Fe-2S]-[ferredoxin] +
CC         S-adenosyl-L-homocysteine; Xref=Rhea:RHEA:42916, Rhea:RHEA-
CC         COMP:10000, Rhea:RHEA-COMP:10001, Rhea:RHEA-COMP:10152, Rhea:RHEA-
CC         COMP:10282, ChEBI:CHEBI:17319, ChEBI:CHEBI:33737, ChEBI:CHEBI:33738,
CC         ChEBI:CHEBI:57844, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789,
CC         ChEBI:CHEBI:74411, ChEBI:CHEBI:74497; EC=2.1.1.192;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01849};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=adenosine(37) in tRNA + 2 reduced [2Fe-2S]-[ferredoxin] + 2 S-
CC         adenosyl-L-methionine = 2-methyladenosine(37) in tRNA + 5'-
CC         deoxyadenosine + L-methionine + 2 oxidized [2Fe-2S]-[ferredoxin] + S-
CC         adenosyl-L-homocysteine; Xref=Rhea:RHEA:43332, Rhea:RHEA-COMP:10000,
CC         Rhea:RHEA-COMP:10001, Rhea:RHEA-COMP:10162, Rhea:RHEA-COMP:10485,
CC         ChEBI:CHEBI:17319, ChEBI:CHEBI:33737, ChEBI:CHEBI:33738,
CC         ChEBI:CHEBI:57844, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789,
CC         ChEBI:CHEBI:74411, ChEBI:CHEBI:74497; EC=2.1.1.192;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01849};
CC   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01849};
CC       Note=Binds 1 [4Fe-4S] cluster. The cluster is coordinated with 3
CC       cysteines and an exchangeable S-adenosyl-L-methionine.
CC       {ECO:0000255|HAMAP-Rule:MF_01849};
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01849}.
CC   -!- MISCELLANEOUS: Reaction proceeds by a ping-pong mechanism involving
CC       intermediate methylation of a conserved cysteine residue.
CC       {ECO:0000255|HAMAP-Rule:MF_01849}.
CC   -!- SIMILARITY: Belongs to the radical SAM superfamily. RlmN family.
CC       {ECO:0000255|HAMAP-Rule:MF_01849}.
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DR   EMBL; AE016825; AAQ61203.1; -; Genomic_DNA.
DR   RefSeq; WP_011137088.1; NC_005085.1.
DR   AlphaFoldDB; Q7NS85; -.
DR   SMR; Q7NS85; -.
DR   STRING; 243365.CV_3541; -.
DR   EnsemblBacteria; AAQ61203; AAQ61203; CV_3541.
DR   GeneID; 66364768; -.
DR   KEGG; cvi:CV_3541; -.
DR   eggNOG; COG0820; Bacteria.
DR   HOGENOM; CLU_029101_0_0_4; -.
DR   OMA; QVGCSLD; -.
DR   OrthoDB; 1111428at2; -.
DR   Proteomes; UP000001424; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0070040; F:rRNA (adenine-C2-)-methyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0019843; F:rRNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0002935; F:tRNA (adenine-C2-)-methyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0070475; P:rRNA base methylation; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.20.20.70; -; 1.
DR   HAMAP; MF_01849; RNA_methyltr_RlmN; 1.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   InterPro; IPR040072; Methyltransferase_A.
DR   InterPro; IPR027492; RNA_MTrfase_RlmN.
DR   InterPro; IPR004383; rRNA_lsu_MTrfase_RlmN/Cfr.
DR   InterPro; IPR007197; rSAM.
DR   PANTHER; PTHR30544; PTHR30544; 1.
DR   Pfam; PF04055; Radical_SAM; 1.
DR   PIRSF; PIRSF006004; CHP00048; 1.
DR   SFLD; SFLDF00275; adenosine_C2_methyltransferase; 1.
DR   TIGRFAMs; TIGR00048; rRNA_mod_RlmN; 1.
DR   PROSITE; PS51918; RADICAL_SAM; 1.
PE   3: Inferred from homology;
KW   4Fe-4S; Cytoplasm; Disulfide bond; Iron; Iron-sulfur; Metal-binding;
KW   Methyltransferase; Reference proteome; rRNA processing;
KW   S-adenosyl-L-methionine; Transferase; tRNA processing.
FT   CHAIN           1..364
FT                   /note="Dual-specificity RNA methyltransferase RlmN"
FT                   /id="PRO_0000350107"
FT   DOMAIN          97..333
FT                   /note="Radical SAM core"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01266"
FT   ACT_SITE        91
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT   ACT_SITE        338
FT                   /note="S-methylcysteine intermediate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT   BINDING         111
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_note="4Fe-4S-S-AdoMet"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT   BINDING         115
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_note="4Fe-4S-S-AdoMet"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT   BINDING         118
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_note="4Fe-4S-S-AdoMet"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT   BINDING         164..165
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT   BINDING         196
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT   BINDING         218..220
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT   BINDING         295
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT   DISULFID        104..338
FT                   /note="(transient)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
SQ   SEQUENCE   364 AA;  41090 MW;  41A6309E61B07757 CRC64;
     MKTNLLDFNL DQLTQHFAEM GEKPFRAKQV MRWMHQMAED DFDAMTDLAK SLRAKLHERA
     EVRVPSLMTG QASSDGTRKW LLDVGTGNGV ETVFIPEDDR GTLCVSSQVG CALECTFCST
     GRQGFNRNLS TAEIIGQLWW ANKAMGVTPK NERVVSNVVM MGMGEPLANF DNVVSAMQIM
     LDDHGYGLSR RRVTLSTSGL VPQMDRLREE CPVALAVSLH APNDAIRDVI VPINKKYPLS
     ELMAACRRYL EKAPRDFITF EYVMLDGVND RPEHARQLLE LVRDVPCKFN LIPFNPFPNS
     GYDRSSNNAI RIFREILQEQ GYVVTVRKTR GDDIDAACGQ LAGQVQDKTR RQAKWTQIIE
     DRKS
 
 
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