ID MIAB_PHOLL Reviewed; 476 AA.
AC Q7MB63;
DT 05-MAY-2009, integrated into UniProtKB/Swiss-Prot.
DT 15-DEC-2003, sequence version 1.
DT 27-MAR-2024, entry version 122.
DE RecName: Full=tRNA-2-methylthio-N(6)-dimethylallyladenosine synthase {ECO:0000255|HAMAP-Rule:MF_01864};
DE EC=2.8.4.3 {ECO:0000255|HAMAP-Rule:MF_01864};
DE AltName: Full=(Dimethylallyl)adenosine tRNA methylthiotransferase MiaB {ECO:0000255|HAMAP-Rule:MF_01864};
DE AltName: Full=tRNA-i(6)A37 methylthiotransferase {ECO:0000255|HAMAP-Rule:MF_01864};
GN Name=miaB {ECO:0000255|HAMAP-Rule:MF_01864}; OrderedLocusNames=plu1312;
OS Photorhabdus laumondii subsp. laumondii (strain DSM 15139 / CIP 105565 /
OS TT01) (Photorhabdus luminescens subsp. laumondii).
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC Morganellaceae; Photorhabdus.
OX NCBI_TaxID=243265;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 15139 / CIP 105565 / TT01;
RX PubMed=14528314; DOI=10.1038/nbt886;
RA Duchaud E., Rusniok C., Frangeul L., Buchrieser C., Givaudan A.,
RA Taourit S., Bocs S., Boursaux-Eude C., Chandler M., Charles J.-F.,
RA Dassa E., Derose R., Derzelle S., Freyssinet G., Gaudriault S., Medigue C.,
RA Lanois A., Powell K., Siguier P., Vincent R., Wingate V., Zouine M.,
RA Glaser P., Boemare N., Danchin A., Kunst F.;
RT "The genome sequence of the entomopathogenic bacterium Photorhabdus
RT luminescens.";
RL Nat. Biotechnol. 21:1307-1313(2003).
CC -!- FUNCTION: Catalyzes the methylthiolation of N6-(dimethylallyl)adenosine
CC (i(6)A), leading to the formation of 2-methylthio-N6-
CC (dimethylallyl)adenosine (ms(2)i(6)A) at position 37 in tRNAs that read
CC codons beginning with uridine. {ECO:0000255|HAMAP-Rule:MF_01864}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[sulfur carrier]-SH + AH2 + N(6)-dimethylallyladenosine(37) in
CC tRNA + 2 S-adenosyl-L-methionine = 2-methylsulfanyl-N(6)-
CC dimethylallyladenosine(37) in tRNA + 5'-deoxyadenosine + [sulfur
CC carrier]-H + A + 2 H(+) + L-methionine + S-adenosyl-L-homocysteine;
CC Xref=Rhea:RHEA:37067, Rhea:RHEA-COMP:10375, Rhea:RHEA-COMP:10376,
CC Rhea:RHEA-COMP:14737, Rhea:RHEA-COMP:14739, ChEBI:CHEBI:13193,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:17319, ChEBI:CHEBI:17499,
CC ChEBI:CHEBI:29917, ChEBI:CHEBI:57844, ChEBI:CHEBI:57856,
CC ChEBI:CHEBI:59789, ChEBI:CHEBI:64428, ChEBI:CHEBI:74415,
CC ChEBI:CHEBI:74417; EC=2.8.4.3; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01864};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01864};
CC Note=Binds 2 [4Fe-4S] clusters. One cluster is coordinated with 3
CC cysteines and an exchangeable S-adenosyl-L-methionine.
CC {ECO:0000255|HAMAP-Rule:MF_01864};
CC -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_01864}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01864}.
CC -!- SIMILARITY: Belongs to the methylthiotransferase family. MiaB
CC subfamily. {ECO:0000255|HAMAP-Rule:MF_01864}.
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DR EMBL; BX571863; CAE13606.1; -; Genomic_DNA.
DR RefSeq; WP_011145636.1; NC_005126.1.
DR AlphaFoldDB; Q7MB63; -.
DR SMR; Q7MB63; -.
DR STRING; 243265.plu1312; -.
DR GeneID; 24167338; -.
DR KEGG; plu:plu1312; -.
DR eggNOG; COG0621; Bacteria.
DR HOGENOM; CLU_018697_2_0_6; -.
DR OrthoDB; 9805215at2; -.
DR Proteomes; UP000002514; 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:0035596; F:methylthiotransferase activity; IEA:InterPro.
DR GO; GO:0006400; P:tRNA modification; IEA:UniProtKB-UniRule.
DR CDD; cd01335; Radical_SAM; 1.
DR Gene3D; 3.40.50.12160; Methylthiotransferase, N-terminal domain; 1.
DR Gene3D; 3.80.30.20; tm_1862 like domain; 1.
DR HAMAP; MF_01864; tRNA_metthiotr_MiaB; 1.
DR InterPro; IPR006638; Elp3/MiaA/NifB-like_rSAM.
DR InterPro; IPR005839; Methylthiotransferase.
DR InterPro; IPR020612; Methylthiotransferase_CS.
DR InterPro; IPR013848; Methylthiotransferase_N.
DR InterPro; IPR038135; Methylthiotransferase_N_sf.
DR InterPro; IPR006463; MiaB_methiolase.
DR InterPro; IPR007197; rSAM.
DR InterPro; IPR023404; rSAM_horseshoe.
DR InterPro; IPR002792; TRAM_dom.
DR NCBIfam; TIGR01574; miaB-methiolase; 1.
DR NCBIfam; TIGR00089; MiaB/RimO family radical SAM methylthiotransferase; 1.
DR PANTHER; PTHR43020; CDK5 REGULATORY SUBUNIT-ASSOCIATED PROTEIN 1; 1.
DR PANTHER; PTHR43020:SF2; MITOCHONDRIAL TRNA METHYLTHIOTRANSFERASE CDK5RAP1; 1.
DR Pfam; PF04055; Radical_SAM; 1.
DR Pfam; PF01938; TRAM; 1.
DR Pfam; PF00919; UPF0004; 1.
DR SFLD; SFLDF00273; (dimethylallyl)adenosine_tRNA; 1.
DR SFLD; SFLDG01082; B12-binding_domain_containing; 1.
DR SFLD; SFLDS00029; Radical_SAM; 1.
DR SMART; SM00729; Elp3; 1.
DR SUPFAM; SSF102114; Radical SAM enzymes; 1.
DR PROSITE; PS51449; MTTASE_N; 1.
DR PROSITE; PS01278; MTTASE_RADICAL; 1.
DR PROSITE; PS51918; RADICAL_SAM; 1.
DR PROSITE; PS50926; TRAM; 1.
PE 3: Inferred from homology;
KW 4Fe-4S; Cytoplasm; Iron; Iron-sulfur; Metal-binding; Reference proteome;
KW S-adenosyl-L-methionine; Transferase; tRNA processing.
FT CHAIN 1..476
FT /note="tRNA-2-methylthio-N(6)-dimethylallyladenosine
FT synthase"
FT /id="PRO_0000374436"
FT DOMAIN 5..122
FT /note="MTTase N-terminal"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01864"
FT DOMAIN 145..377
FT /note="Radical SAM core"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01266"
FT DOMAIN 380..443
FT /note="TRAM"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01864"
FT BINDING 14
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01864"
FT BINDING 51
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01864"
FT BINDING 85
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01864"
FT BINDING 159
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /ligand_note="4Fe-4S-S-AdoMet"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01864"
FT BINDING 163
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /ligand_note="4Fe-4S-S-AdoMet"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01864"
FT BINDING 166
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /ligand_note="4Fe-4S-S-AdoMet"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01864"
SQ SEQUENCE 476 AA; 53790 MW; 0D584A831D02218A CRC64;
MSTIKKLYIK TWGCQMNEYD SSKMADLLES THGYQLTDVA EEADILLLNT CSIREKAQEK
VFHQLGRWKN LKDTNPDLII GVGGCVASQE GDFIRQRAQC VDIIFGPQTL HRLPEMINQV
KGTRSPVVDI SFPEIEKFDR LPEPRAEGPS AFVSIMEGCN KYCTFCVVPY TRGEEVSRPC
DDVLFEIAQL AAQGVREVNL LGQNVNAYRG ATYDGDICSF AELIRLVAAI DGIDRIRFTT
SHPIEFTDDI IAVYEDTPEL VSFLHLPVQS GSDRILTLMK RAHTALEYKS IIRKLRKARP
DILISSDFII GFPGETQDDF EKTMKLIADV NFDMSYSFIY SARPGTPAAD LPDDVSEEEK
KQRLYLLQQR INQQAMSYSR AMLGSVQRIL VEGTSRKNVM ELSGRTENNR VVNFEGQPDM
IGKFVDVEIV DVYANSLRGK VIRTEDQMDL RIHESPESVI ARTRKEDEIG VGTYQP
//
