RLMN_POLAQ
ID RLMN_POLAQ Reviewed; 402 AA.
AC A4SYE2;
DT 02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT 15-MAY-2007, sequence version 1.
DT 03-AUG-2022, entry version 91.
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=Pnuc_1292;
OS Polynucleobacter asymbioticus (strain DSM 18221 / CIP 109841 /
OS QLW-P1DMWA-1) (Polynucleobacter necessarius subsp. asymbioticus).
OC Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC Burkholderiaceae; Polynucleobacter.
OX NCBI_TaxID=312153;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 18221 / CIP 109841 / QLW-P1DMWA-1;
RX PubMed=22675600; DOI=10.4056/sigs.2395367;
RA Meincke L., Copeland A., Lapidus A., Lucas S., Berry K.W., Del Rio T.G.,
RA Hammon N., Dalin E., Tice H., Pitluck S., Richardson P., Bruce D.,
RA Goodwin L., Han C., Tapia R., Detter J.C., Schmutz J., Brettin T.,
RA Larimer F., Land M., Hauser L., Kyrpides N.C., Ivanova N., Goker M.,
RA Woyke T., Wu Q.L., Pockl M., Hahn M.W., Klenk H.P.;
RT "Complete genome sequence of Polynucleobacter necessarius subsp.
RT asymbioticus type strain (QLW-P1DMWA-1(T)).";
RL Stand. Genomic Sci. 6:74-83(2012).
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; CP000655; ABP34506.1; -; Genomic_DNA.
DR RefSeq; WP_011903131.1; NC_009379.1.
DR AlphaFoldDB; A4SYE2; -.
DR SMR; A4SYE2; -.
DR STRING; 312153.Pnuc_1292; -.
DR PRIDE; A4SYE2; -.
DR EnsemblBacteria; ABP34506; ABP34506; Pnuc_1292.
DR GeneID; 31481680; -.
DR KEGG; pnu:Pnuc_1292; -.
DR eggNOG; COG0820; Bacteria.
DR HOGENOM; CLU_029101_0_0_4; -.
DR OMA; QVGCSLD; -.
DR Proteomes; UP000000231; 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 SFLD; SFLDS00029; Radical_SAM; 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..402
FT /note="Dual-specificity RNA methyltransferase RlmN"
FT /id="PRO_0000350310"
FT DOMAIN 100..351
FT /note="Radical SAM core"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01266"
FT ACT_SITE 94
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT ACT_SITE 356
FT /note="S-methylcysteine intermediate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT BINDING 114
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 121
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 182..183
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT BINDING 214
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT BINDING 236..238
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT BINDING 313
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
FT DISULFID 107..356
FT /note="(transient)"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01849"
SQ SEQUENCE 402 AA; 44851 MW; 328B04108AAE4037 CRC64;
MTSPRVNLLD FDADQMAAYV AGLNEKPFRA KQLMQWIHQR GVSDINDMSD LAKSFRATLL
DKVEVLSLPV IKDEHATDGT RKWLLDVGAG NAVESVFIPE DDRGTLCISS QAGCAVNCRF
CSTGRQGFSR NLTSGEIIGQ LWFAEHLLRN DPEAIRRIEK YPTPGWEHTG RVISNVVMMG
MGEPLLNYDN VVSALRLMLD DRAYGLSRRR VTVSTSGVVP MIDRLAQDCP VALAVSLHAP
NDALRDQLVP LNQKYPLREL LDACERYLPF APRDFLTFEY CMLDGVNDSD IQAKELVRLL
RNIKCKINLI PFNPFPESGL KRSSAQRVNA FAGILLDAGM VATVRKTRGD DIAAACGQLA
GDVVDRTRVR ERDIHSAEIE IAEVESDVQP NEQPIEWLKK LT
