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MIAB_SALG2
ID   MIAB_SALG2              Reviewed;         474 AA.
AC   B5R817;
DT   05-MAY-2009, integrated into UniProtKB/Swiss-Prot.
DT   04-NOV-2008, sequence version 1.
DT   03-AUG-2022, entry version 79.
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=SG0674;
OS   Salmonella gallinarum (strain 287/91 / NCTC 13346).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Salmonella.
OX   NCBI_TaxID=550538;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=287/91 / NCTC 13346;
RX   PubMed=18583645; DOI=10.1101/gr.077404.108;
RA   Thomson N.R., Clayton D.J., Windhorst D., Vernikos G., Davidson S.,
RA   Churcher C., Quail M.A., Stevens M., Jones M.A., Watson M., Barron A.,
RA   Layton A., Pickard D., Kingsley R.A., Bignell A., Clark L., Harris B.,
RA   Ormond D., Abdellah Z., Brooks K., Cherevach I., Chillingworth T.,
RA   Woodward J., Norberczak H., Lord A., Arrowsmith C., Jagels K., Moule S.,
RA   Mungall K., Saunders M., Whitehead S., Chabalgoity J.A., Maskell D.,
RA   Humphreys T., Roberts M., Barrow P.A., Dougan G., Parkhill J.;
RT   "Comparative genome analysis of Salmonella enteritidis PT4 and Salmonella
RT   gallinarum 287/91 provides insights into evolutionary and host adaptation
RT   pathways.";
RL   Genome Res. 18:1624-1637(2008).
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; AM933173; CAR36570.1; -; Genomic_DNA.
DR   RefSeq; WP_001575805.1; NC_011274.1.
DR   AlphaFoldDB; B5R817; -.
DR   SMR; B5R817; -.
DR   EnsemblBacteria; CAR36570; CAR36570; SG0674.
DR   KEGG; seg:SG0674; -.
DR   HOGENOM; CLU_018697_2_0_6; -.
DR   OMA; CEHFHIP; -.
DR   Proteomes; UP000008321; 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   Gene3D; 3.40.50.12160; -; 1.
DR   Gene3D; 3.80.30.20; -; 1.
DR   HAMAP; MF_01864; tRNA_metthiotr_MiaB; 1.
DR   InterPro; IPR006638; Elp3/MiaB/NifB.
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   Pfam; PF04055; Radical_SAM; 1.
DR   Pfam; PF01938; TRAM; 1.
DR   Pfam; PF00919; UPF0004; 1.
DR   SFLD; SFLDF00273; (dimethylallyl)adenosine_tRNA; 1.
DR   SFLD; SFLDS00029; Radical_SAM; 1.
DR   SMART; SM00729; Elp3; 1.
DR   TIGRFAMs; TIGR00089; TIGR00089; 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;
KW   S-adenosyl-L-methionine; Transferase; tRNA processing.
FT   CHAIN           1..474
FT                   /note="tRNA-2-methylthio-N(6)-dimethylallyladenosine
FT                   synthase"
FT                   /id="PRO_0000374524"
FT   DOMAIN          3..120
FT                   /note="MTTase N-terminal"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01864"
FT   DOMAIN          143..375
FT                   /note="Radical SAM core"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01266"
FT   DOMAIN          378..441
FT                   /note="TRAM"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01864"
FT   BINDING         12
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         49
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         83
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         157
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         161
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         164
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   474 AA;  53729 MW;  BFF243A67F3C6CC8 CRC64;
     MTKKLHIKTW GCQMNEYDSS KMADLLDATH GYQLTDVAEE ADVLLLNTCS IREKAQEKVF
     HQLGRWRLLK EKNPDLIIGV GGCVASQEGE HIRQRAHYVD IIFGPQTLHR LPEMINSVRG
     DRSPVVDISF PEIEKFDRLP EPRAEGPTAF VSIMEGCNKY CTYCVVPYTR GEEVSRPSDD
     ILFEIAQLAA QGVREVNLLG QNVNAWRGEN YDGTTGTFAD LLRLVAAIDG IDRIRFTTSH
     PIEFTDDIIE VYRDTPELVS FLHLPVQSGS DRVLNLMGRT HTALEYKAII RKLRAARPDI
     QISSDFIVGF PGETNDDFEK TMKLIADVNF DMSYSFIFSA RPGTPAADMV DDVPEEEKKQ
     RLYILQERIN QQAMAWSRRM LGTTQRILVE GTSRKNIMEL SGRTENNRVV NFEGTPEMIG
     KFVDVEITDV YPNSLRGKVV RTEDEMGLRV AETPESVIAR TRKENELGVG FYQP
 
 
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