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MIAB_SHESM
ID   MIAB_SHESM              Reviewed;         474 AA.
AC   Q0HLI3;
DT   05-MAY-2009, integrated into UniProtKB/Swiss-Prot.
DT   03-OCT-2006, sequence version 1.
DT   03-AUG-2022, entry version 90.
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};
GN   OrderedLocusNames=Shewmr4_1004;
OS   Shewanella sp. (strain MR-4).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Alteromonadales;
OC   Shewanellaceae; Shewanella.
OX   NCBI_TaxID=60480;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MR-4;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA   Kiss H., Brettin T., Bruce D., Han C., Tapia R., Gilna P., Schmutz J.,
RA   Larimer F., Land M., Hauser L., Kyrpides N., Mikhailova N., Nealson K.,
RA   Konstantinidis K., Klappenbach J., Tiedje J., Richardson P.;
RT   "Complete sequence of Shewanella sp. MR-4.";
RL   Submitted (AUG-2006) to the EMBL/GenBank/DDBJ databases.
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; CP000446; ABI38084.1; -; Genomic_DNA.
DR   RefSeq; WP_011621796.1; NC_008321.1.
DR   AlphaFoldDB; Q0HLI3; -.
DR   SMR; Q0HLI3; -.
DR   KEGG; she:Shewmr4_1004; -.
DR   HOGENOM; CLU_018697_2_0_6; -.
DR   OMA; CEHFHIP; -.
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_0000374546"
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;  53741 MW;  919F74126B2A4AC6 CRC64;
     MSKKLHIKTW GCQMNEYDSS KMADLLGEYQ GYTLTEEAEE ADILLLNTCS IREKAQEKVF
     HQLGRWKTLK DKNPDLIIGV GGCVASQEGK AIKDRAHCVD IIFGPQTLHR LPDMIEQVRR
     GEKAVIDVSF PEIEKFDRLP EPRAEGPTAF VSIMEGCSKY CSFCVVPYTR GEEVSRPSDD
     IILEIAQLAE QGVREVNLLG QNVNAYRGAT HDGGICTFAE LLRYVAAIDG IDRIRFTTSH
     PIEFTQDIID VYEDTPELVS FLHLPVQSGS DRILTAMKRG HMAIEYKSII RRLRKARPDI
     QISSDFIIGF PGETKEDFAD TMKLIEDVAF DHSFSFIYSA RPGTPAADLP DDVDMEEKKQ
     RLAILQDRIT QQAMRYSRHM MGTVQRILVE GPSVKNPMEL RGRTENNRVV NFEGLPKHIG
     SFVDVEIVDV YTNSLRGKFI RGEDEMDLRR NLRPSDILAK HKQDDDLGVT QFKP
 
 
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