RLMN_BORBR
ID RLMN_BORBR Reviewed; 382 AA.
AC Q7WHM8;
DT 02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2003, sequence version 1.
DT 03-AUG-2022, entry version 111.
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=BB3178;
OS Bordetella bronchiseptica (strain ATCC BAA-588 / NCTC 13252 / RB50)
OS (Alcaligenes bronchisepticus).
OC Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC Alcaligenaceae; Bordetella.
OX NCBI_TaxID=257310;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-588 / NCTC 13252 / RB50;
RX PubMed=12910271; DOI=10.1038/ng1227;
RA Parkhill J., Sebaihia M., Preston A., Murphy L.D., Thomson N.R.,
RA Harris D.E., Holden M.T.G., Churcher C.M., Bentley S.D., Mungall K.L.,
RA Cerdeno-Tarraga A.-M., Temple L., James K.D., Harris B., Quail M.A.,
RA Achtman M., Atkin R., Baker S., Basham D., Bason N., Cherevach I.,
RA Chillingworth T., Collins M., Cronin A., Davis P., Doggett J., Feltwell T.,
RA Goble A., Hamlin N., Hauser H., Holroyd S., Jagels K., Leather S.,
RA Moule S., Norberczak H., O'Neil S., Ormond D., Price C., Rabbinowitsch E.,
RA Rutter S., Sanders M., Saunders D., Seeger K., Sharp S., Simmonds M.,
RA Skelton J., Squares R., Squares S., Stevens K., Unwin L., Whitehead S.,
RA Barrell B.G., Maskell D.J.;
RT "Comparative analysis of the genome sequences of Bordetella pertussis,
RT Bordetella parapertussis and Bordetella bronchiseptica.";
RL Nat. Genet. 35:32-40(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; BX640446; CAE33670.1; -; Genomic_DNA.
DR RefSeq; WP_003810692.1; NC_002927.3.
DR AlphaFoldDB; Q7WHM8; -.
DR SMR; Q7WHM8; -.
DR STRING; 257310.BB3178; -.
DR EnsemblBacteria; CAE33670; CAE33670; BB3178.
DR KEGG; bbr:BB3178; -.
DR eggNOG; COG0820; Bacteria.
DR HOGENOM; CLU_029101_0_0_4; -.
DR OMA; QVGCSLD; -.
DR OrthoDB; 1111428at2; -.
DR Proteomes; UP000001027; 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; rRNA processing; S-adenosyl-L-methionine; Transferase;
KW tRNA processing.
FT CHAIN 1..382
FT /note="Dual-specificity RNA methyltransferase RlmN"
FT /id="PRO_0000350055"
FT DOMAIN 101..348
FT /note="Radical SAM core"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01266"
FT ACT_SITE 95
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT ACT_SITE 353
FT /note="S-methylcysteine intermediate"
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 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 122
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 179..180
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT BINDING 211
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT BINDING 233..235
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT BINDING 310
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT DISULFID 108..353
FT /note="(transient)"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
SQ SEQUENCE 382 AA; 42382 MW; 6D6502C2C22F1F35 CRC64;
MESVERVNLL GLDGAALSEL VGQWGGKPFR ARQLQRWVHQ RGADSFDAMT DLARDFRAQL
ARDCVIEALP VNTEQRSSDG TRKWLFDVGQ GNAIETVFIP EDDRGTLCIS SQAGCVVNCR
FCSTGHQGFN RNLRASEIIG QLWWAKRVLE AAADTARLPG GKAGEDTRVI SNVVMMGMGE
PLLNYDQVLP ALRLMLDDNA YGLSRRRVTV STSGVVPMMD RLSQDCPVAL AVSLHAPNDA
LRDELVPLNR KYPLNALLAA CERYLAHAPR DFITFEYCML DGINDTDQHA RELIQLARQV
RCKLNLIPFN PFPASGLKRS PSARVRVFAQ RLMDAGIVTT VRKTRGDDID AACGQLAGEV
RDRTRITERN ATRTIPIQQV HA
