RLMN_RHOBA
ID RLMN_RHOBA Reviewed; 371 AA.
AC Q7UHU7;
DT 02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2003, sequence version 1.
DT 03-AUG-2022, entry version 113.
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=RB12963;
OS Rhodopirellula baltica (strain DSM 10527 / NCIMB 13988 / SH1).
OC Bacteria; Planctomycetes; Planctomycetia; Pirellulales; Pirellulaceae;
OC Rhodopirellula.
OX NCBI_TaxID=243090;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 10527 / NCIMB 13988 / SH1;
RX PubMed=12835416; DOI=10.1073/pnas.1431443100;
RA Gloeckner F.O., Kube M., Bauer M., Teeling H., Lombardot T., Ludwig W.,
RA Gade D., Beck A., Borzym K., Heitmann K., Rabus R., Schlesner H., Amann R.,
RA Reinhardt R.;
RT "Complete genome sequence of the marine planctomycete Pirellula sp. strain
RT 1.";
RL Proc. Natl. Acad. Sci. U.S.A. 100:8298-8303(2003).
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; BX294156; CAD77872.1; -; Genomic_DNA.
DR RefSeq; NP_870795.1; NC_005027.1.
DR AlphaFoldDB; Q7UHU7; -.
DR SMR; Q7UHU7; -.
DR STRING; 243090.RB12963; -.
DR PRIDE; Q7UHU7; -.
DR EnsemblBacteria; CAD77872; CAD77872; RB12963.
DR KEGG; rba:RB12963; -.
DR PATRIC; fig|243090.15.peg.6280; -.
DR eggNOG; COG0820; Bacteria.
DR HOGENOM; CLU_029101_0_1_0; -.
DR InParanoid; Q7UHU7; -.
DR OMA; QVGCSLD; -.
DR OrthoDB; 1111428at2; -.
DR Proteomes; UP000001025; 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; IBA:GO_Central.
DR GO; GO:0030488; P:tRNA methylation; IBA:GO_Central.
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..371
FT /note="Probable dual-specificity RNA methyltransferase
FT RlmN"
FT /id="PRO_0000350367"
FT DOMAIN 120..346
FT /note="Radical SAM core"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01266"
FT ACT_SITE 114
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT ACT_SITE 357
FT /note="S-methylcysteine intermediate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT BINDING 134
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 138
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 141
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 183..184
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT BINDING 215
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT BINDING 238..240
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT BINDING 314
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT DISULFID 127..357
FT /note="(transient)"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
SQ SEQUENCE 371 AA; 40643 MW; 901D50230342A2CF CRC64;
MICLTPMVSL PLVTTTDSES TGPRKNHLLN WSLDQLKDWL QEQGQKPFRA KQIRRWLFSG
RATSFEEMTD LPAKLRAQLE EHFAIFNATE AVVSKSKDGT EKILVRLADG GEVECVLLRD
GPRRSICVSS QVGCAMGCVF CASGLDGVDR NLTGGEILEQ MLRLQQRLPA DERLSHIVMM
GMGEPLANLP GVLSALDVAR SEDGLGISPR RITISTVGLP PAIDKLAAAG IPYNLAVSLH
APNDELRSEL VPVNRKIGIE PVLQAADRYF HASGRRLTFE YVLLGGINDG DEHARQLSQI
LRGRSVMMNV IPYNPVAGLP YRTPSGAAIA RFRAILESAG VNVNFRQRKG DEINAACGQL
RRNRGEVKAT K
