RLMN2_OPITP
ID RLMN2_OPITP Reviewed; 428 AA.
AC B1ZVM5;
DT 02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT 20-MAY-2008, sequence version 1.
DT 03-AUG-2022, entry version 78.
DE RecName: Full=Probable dual-specificity RNA methyltransferase RlmN 2 {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 2 {ECO:0000255|HAMAP-Rule:MF_01849};
DE AltName: Full=23S rRNA m2A2503 methyltransferase 2 {ECO:0000255|HAMAP-Rule:MF_01849};
DE AltName: Full=Ribosomal RNA large subunit methyltransferase N 2 {ECO:0000255|HAMAP-Rule:MF_01849};
DE AltName: Full=tRNA (adenine(37)-C(2))-methyltransferase 2 {ECO:0000255|HAMAP-Rule:MF_01849};
DE AltName: Full=tRNA m2A37 methyltransferase 2 {ECO:0000255|HAMAP-Rule:MF_01849};
GN Name=rlmN2 {ECO:0000255|HAMAP-Rule:MF_01849}; OrderedLocusNames=Oter_0834;
OS Opitutus terrae (strain DSM 11246 / JCM 15787 / PB90-1).
OC Bacteria; Verrucomicrobia; Opitutae; Opitutales; Opitutaceae; Opitutus.
OX NCBI_TaxID=452637;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 11246 / JCM 15787 / PB90-1;
RX PubMed=21398538; DOI=10.1128/jb.00228-11;
RA van Passel M.W., Kant R., Palva A., Copeland A., Lucas S., Lapidus A.,
RA Glavina del Rio T., Pitluck S., Goltsman E., Clum A., Sun H., Schmutz J.,
RA Larimer F.W., Land M.L., Hauser L., Kyrpides N., Mikhailova N.,
RA Richardson P.P., Janssen P.H., de Vos W.M., Smidt H.;
RT "Genome sequence of the verrucomicrobium Opitutus terrae PB90-1, an
RT abundant inhabitant of rice paddy soil ecosystems.";
RL J. Bacteriol. 193:2367-2368(2011).
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; CP001032; ACB74122.1; -; Genomic_DNA.
DR AlphaFoldDB; B1ZVM5; -.
DR SMR; B1ZVM5; -.
DR STRING; 452637.Oter_0834; -.
DR EnsemblBacteria; ACB74122; ACB74122; Oter_0834.
DR KEGG; ote:Oter_0834; -.
DR eggNOG; COG0820; Bacteria.
DR HOGENOM; CLU_029101_2_0_0; -.
DR OMA; RIFFEWT; -.
DR Proteomes; UP000007013; 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 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..428
FT /note="Probable dual-specificity RNA methyltransferase RlmN
FT 2"
FT /id="PRO_0000350295"
FT DOMAIN 148..414
FT /note="Radical SAM core"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01266"
FT REGION 207..232
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 142
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT ACT_SITE 419
FT /note="S-methylcysteine intermediate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT BINDING 162
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 166
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 169
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 244..245
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT BINDING 276
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT BINDING 299..301
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT BINDING 375
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT DISULFID 155..419
FT /note="(transient)"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
SQ SEQUENCE 428 AA; 46782 MW; AECC2649FBE078A5 CRC64;
MRFLTGNVVV RARGADFFVA IDARSAGGAD AWLALTNGAP LLRRFTLSPS APTNLYDFTR
AELRLWLSRR ELNPVHAARI WSYLYLDLVE GFGAMTELPA RVRARLEAEM CVGNLKIARE
TDSRDGFTRK YLLELADGAA IETVLMRFAG RATACVSSQV GCAMGCVFCA TGQMGYTRHL
TAGEIVAQAV HVARALRTAA FEKCHVMRDP SPGREAGEKS RDEADRHRAP PTPRLRNLVL
MGMGEPLHNY EAVMRAVDIL RDDGGLALGA ERITLSTVGV VPGILRLAAE KRPVHLAVSL
HAADQEERAA LVPVAKKWPL DELMAACRTY SETTGRRVFY EWTLIEGRND TAAHARAVGR
LLRGLPAQVN LIPLNPTAGY DGTPGRTEAA RRFQEILSRE FALPSTVRQR RGIDIAAGCG
QLAVAEQS
