ID R6XMS4_9FIRM Unreviewed; 347 AA.
AC R6XMS4;
DT 24-JUL-2013, integrated into UniProtKB/TrEMBL.
DT 24-JUL-2013, sequence version 1.
DT 27-MAR-2024, entry version 51.
DE RecName: Full=Probable dual-specificity RNA methyltransferase RlmN {ECO:0000256|HAMAP-Rule:MF_01849};
DE EC=2.1.1.192 {ECO:0000256|HAMAP-Rule:MF_01849};
DE AltName: Full=23S rRNA (adenine(2503)-C(2))-methyltransferase {ECO:0000256|HAMAP-Rule:MF_01849};
DE AltName: Full=23S rRNA m2A2503 methyltransferase {ECO:0000256|HAMAP-Rule:MF_01849};
DE AltName: Full=Ribosomal RNA large subunit methyltransferase N {ECO:0000256|HAMAP-Rule:MF_01849};
DE AltName: Full=tRNA (adenine(37)-C(2))-methyltransferase {ECO:0000256|HAMAP-Rule:MF_01849};
DE AltName: Full=tRNA m2A37 methyltransferase {ECO:0000256|HAMAP-Rule:MF_01849};
GN Name=rlmN {ECO:0000256|HAMAP-Rule:MF_01849};
GN ORFNames=BN617_00645 {ECO:0000313|EMBL:CDD22935.1};
OS Firmicutes bacterium CAG:345.
OC Bacteria; Bacillota.
OX NCBI_TaxID=1263020 {ECO:0000313|EMBL:CDD22935.1, ECO:0000313|Proteomes:UP000018232};
RN [1] {ECO:0000313|EMBL:CDD22935.1, ECO:0000313|Proteomes:UP000018232}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=MGS:345 {ECO:0000313|Proteomes:UP000018232};
RA Nielsen H.B., Almeida M., Juncker A.S., Rasmussen S., Li J., Sunagawa S.,
RA Plichta D., Gautier L., Le Chatelier E., Peletier E., Bonde I., Nielsen T.,
RA Manichanh C., Arumugam M., Batto J., Santos M.B.Q.D., Blom N., Borruel N.,
RA Burgdorf K.S., Boumezbeur F., Casellas F., Dore J., Guarner F., Hansen T.,
RA Hildebrand F., Kaas R.S., Kennedy S., Kristiansen K., Kultima J.R.,
RA Leonard P., Levenez F., Lund O., Moumen B., Le Paslier D., Pons N.,
RA Pedersen O., Prifti E., Qin J., Raes J., Tap J., Tims S., Ussery D.W.,
RA Yamada T., MetaHit consortium, Renault P., Sicheritz-Ponten T., Bork P.,
RA Wang J., Brunak S., Ehrlich S.D.;
RT "Dependencies among metagenomic species, viruses, plasmids and units of
RT genetic variation.";
RL Submitted (NOV-2012) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Specifically methylates position 2 of adenine 2503 in 23S
CC rRNA and position 2 of adenine 37 in tRNAs. {ECO:0000256|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:0000256|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:0000256|HAMAP-Rule:MF_01849};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000256|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:0000256|HAMAP-Rule:MF_01849};
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_01849}.
CC -!- MISCELLANEOUS: Reaction proceeds by a ping-pong mechanism involving
CC intermediate methylation of a conserved cysteine residue.
CC {ECO:0000256|HAMAP-Rule:MF_01849}.
CC -!- SIMILARITY: Belongs to the radical SAM superfamily. RlmN family.
CC {ECO:0000256|HAMAP-Rule:MF_01849}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_01849}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:CDD22935.1}.
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DR EMBL; CBGR010000022; CDD22935.1; -; Genomic_DNA.
DR AlphaFoldDB; R6XMS4; -.
DR STRING; 1263020.BN617_00645; -.
DR Proteomes; UP000018232; Unassembled WGS sequence.
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(2503)-C2-)-methyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0019843; F:rRNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0002935; F:tRNA (adenine(37)-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 GO; GO:0030488; P:tRNA methylation; IEA:UniProtKB-UniRule.
DR CDD; cd01335; Radical_SAM; 1.
DR Gene3D; 1.10.150.530; -; 1.
DR Gene3D; 3.20.20.70; Aldolase class I; 1.
DR HAMAP; MF_01849; RNA_methyltr_RlmN; 1.
DR InterPro; IPR013785; Aldolase_TIM.
DR InterPro; IPR040072; Methyltransferase_A.
DR InterPro; IPR048641; RlmN_N.
DR InterPro; IPR027492; RNA_MTrfase_RlmN.
DR InterPro; IPR004383; rRNA_lsu_MTrfase_RlmN/Cfr.
DR InterPro; IPR007197; rSAM.
DR NCBIfam; TIGR00048; rRNA_mod_RlmN; 1.
DR PANTHER; PTHR30544; 23S RRNA METHYLTRANSFERASE; 1.
DR PANTHER; PTHR30544:SF5; RADICAL SAM CORE DOMAIN-CONTAINING PROTEIN; 1.
DR Pfam; PF04055; Radical_SAM; 1.
DR Pfam; PF21016; RlmN_N; 1.
DR PIRSF; PIRSF006004; CHP00048; 1.
DR SFLD; SFLDF00275; adenosine_C2_methyltransferase; 1.
DR SFLD; SFLDG01062; methyltransferase_(Class_A); 1.
DR SUPFAM; SSF102114; Radical SAM enzymes; 1.
DR PROSITE; PS51918; RADICAL_SAM; 1.
PE 3: Inferred from homology;
KW 4Fe-4S {ECO:0000256|ARBA:ARBA00022485, ECO:0000256|HAMAP-Rule:MF_01849};
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_01849};
KW Disulfide bond {ECO:0000256|HAMAP-Rule:MF_01849};
KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|HAMAP-Rule:MF_01849};
KW Iron-sulfur {ECO:0000256|ARBA:ARBA00023014, ECO:0000256|HAMAP-
KW Rule:MF_01849};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_01849};
KW Methyltransferase {ECO:0000256|ARBA:ARBA00022603, ECO:0000256|HAMAP-
KW Rule:MF_01849}; Reference proteome {ECO:0000313|Proteomes:UP000018232};
KW rRNA processing {ECO:0000256|ARBA:ARBA00022552, ECO:0000256|HAMAP-
KW Rule:MF_01849};
KW S-adenosyl-L-methionine {ECO:0000256|ARBA:ARBA00022691, ECO:0000256|HAMAP-
KW Rule:MF_01849};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_01849};
KW tRNA processing {ECO:0000256|ARBA:ARBA00022694, ECO:0000256|HAMAP-
KW Rule:MF_01849}.
FT DOMAIN 96..331
FT /note="Radical SAM core"
FT /evidence="ECO:0000259|PROSITE:PS51918"
FT ACT_SITE 90
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01849"
FT ACT_SITE 336
FT /note="S-methylcysteine intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01849"
FT BINDING 110
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_note="4Fe-4S-S-AdoMet"
FT /evidence="ECO:0000256|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:0000256|HAMAP-Rule:MF_01849"
FT BINDING 117
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_note="4Fe-4S-S-AdoMet"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01849"
FT BINDING 161..162
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01849"
FT BINDING 193
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01849"
FT BINDING 216..218
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01849"
FT BINDING 293
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01849"
SQ SEQUENCE 347 AA; 39468 MW; 9DAFC7337CF95147 CRC64;
MKNIYGLTLE KLTEEMLSLE QKSFRAKQLF SWLYVKNATS FDEMSDISLK FREVLKEKYS
IEKPKLFLKQ KSIDGTTKLL LEMRDGEKIE TVLMPYNYGN AICISTQVGC NMGCKFCASG
LLKRKRNLST EELVGQVLIL NDVLRENNQN PVTHVVVMGT GEPFDNYDNV IDFIRIINSQ
FGLAIGARHI TVSTSGIVPG ILKYGKEGLQ INLAVSLHAP TNQLRDIIMP INKAYPLEQL
IPAIVQYGKD SNGRRVTYEY IMIQDFNDSE ECADKLIELI KPTFGYVNLI PYNRVIENDF
YRSSNNRIHR FHDKLLKAGI KATIRKEFGA DIDAACGQLR AKYANKN
//
