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RLMN_LISMC
ID   RLMN_LISMC              Reviewed;         367 AA.
AC   C1KZZ3;
DT   22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT   26-MAY-2009, sequence version 1.
DT   03-AUG-2022, entry version 70.
DE   RecName: Full=Probable 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=Lm4b_00502;
OS   Listeria monocytogenes serotype 4b (strain CLIP80459).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Listeriaceae; Listeria.
OX   NCBI_TaxID=568819;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CLIP80459;
RX   PubMed=22530965; DOI=10.1186/1471-2164-13-144;
RA   Hain T., Ghai R., Billion A., Kuenne C.T., Steinweg C., Izar B.,
RA   Mohamed W., Mraheil M., Domann E., Schaffrath S., Karst U., Goesmann A.,
RA   Oehm S., Puhler A., Merkl R., Vorwerk S., Glaser P., Garrido P.,
RA   Rusniok C., Buchrieser C., Goebel W., Chakraborty T.;
RT   "Comparative genomics and transcriptomics of lineages I, II, and III
RT   strains of Listeria monocytogenes.";
RL   BMC Genomics 13:144-144(2012).
CC   -!- FUNCTION: Specifically methylates position 2 of adenine 2503 in 23S
CC       rRNA and position 2 of adenine 37 in tRNAs. {ECO:0000255|HAMAP-
CC       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; FM242711; CAS04270.1; -; Genomic_DNA.
DR   RefSeq; WP_003725208.1; NC_012488.1.
DR   AlphaFoldDB; C1KZZ3; -.
DR   SMR; C1KZZ3; -.
DR   GeneID; 61169518; -.
DR   KEGG; lmc:Lm4b_00502; -.
DR   HOGENOM; CLU_029101_0_1_9; -.
DR   OMA; KVVFMGM; -.
DR   BioCyc; LMON568819:LM4B_RS02480-MON; -.
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; rRNA processing; S-adenosyl-L-methionine; Transferase;
KW   tRNA processing.
FT   CHAIN           1..367
FT                   /note="Probable dual-specificity RNA methyltransferase
FT                   RlmN"
FT                   /id="PRO_1000216121"
FT   DOMAIN          98..326
FT                   /note="Radical SAM core"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01266"
FT   ACT_SITE        92
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT   ACT_SITE        341
FT                   /note="S-methylcysteine intermediate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT   BINDING         112
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         116
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         119
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         219..221
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT   BINDING         297
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT   DISULFID        105..341
FT                   /note="(transient)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
SQ   SEQUENCE   367 AA;  42101 MW;  51F60BE6DB31A165 CRC64;
     MEKSSIYGLT WTKLTEWLEA HGQKKFRATQ VWDWLYRKRV KTFEEMSNVP KETIELLTAN
     FVMNTLEEQV VQESTDGTTK YLFKLSDGNL IETVMMKQEY GLSVCVTTQV GCNIGCTFCA
     SGLLKKSRDL TAGEIVEQIM NVQHYLDGRN LEERVSHVVV MGIGEPFDNY DNVMDFLRVI
     NHDKGLAIGA RHITVSTSGL APRIIDFANE DFQVNLAISL HAPNNELRTS IMRINKTYSI
     EKLMEAIHYY VNKTNRRITF EYIMLKGVND HKKEALELAA LLGEHRHLAY VNLIPYNPVD
     EHIDYERSTK EDVLAFYDTL KKNGINCVIR REHGTDIDAA CGQLRSKQIK RVGVRERMKQ
     KQAAAEE
 
 
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