MIAB_FRACC
ID MIAB_FRACC Reviewed; 540 AA.
AC Q2J771;
DT 05-MAY-2009, integrated into UniProtKB/Swiss-Prot.
DT 07-MAR-2006, sequence version 1.
DT 03-AUG-2022, entry version 103.
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=Francci3_3518;
OS Frankia casuarinae (strain DSM 45818 / CECT 9043 / CcI3).
OC Bacteria; Actinobacteria; Frankiales; Frankiaceae; Frankia.
OX NCBI_TaxID=106370;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 45818 / CECT 9043 / CcI3;
RX PubMed=17151343; DOI=10.1101/gr.5798407;
RA Normand P., Lapierre P., Tisa L.S., Gogarten J.P., Alloisio N.,
RA Bagnarol E., Bassi C.A., Berry A.M., Bickhart D.M., Choisne N., Couloux A.,
RA Cournoyer B., Cruveiller S., Daubin V., Demange N., Francino M.P.,
RA Goltsman E., Huang Y., Kopp O.R., Labarre L., Lapidus A., Lavire C.,
RA Marechal J., Martinez M., Mastronunzio J.E., Mullin B.C., Niemann J.,
RA Pujic P., Rawnsley T., Rouy Z., Schenowitz C., Sellstedt A., Tavares F.,
RA Tomkins J.P., Vallenet D., Valverde C., Wall L.G., Wang Y., Medigue C.,
RA Benson D.R.;
RT "Genome characteristics of facultatively symbiotic Frankia sp. strains
RT reflect host range and host plant biogeography.";
RL Genome Res. 17:7-15(2007).
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; CP000249; ABD12871.1; -; Genomic_DNA.
DR RefSeq; WP_011437896.1; NZ_LRTJ01000037.1.
DR AlphaFoldDB; Q2J771; -.
DR SMR; Q2J771; -.
DR STRING; 106370.Francci3_3518; -.
DR PRIDE; Q2J771; -.
DR EnsemblBacteria; ABD12871; ABD12871; Francci3_3518.
DR KEGG; fra:Francci3_3518; -.
DR eggNOG; COG0621; Bacteria.
DR HOGENOM; CLU_018697_2_2_11; -.
DR OMA; CEHFHIP; -.
DR OrthoDB; 397139at2; -.
DR PhylomeDB; Q2J771; -.
DR Proteomes; UP000001937; 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; PF00919; UPF0004; 1.
DR SFLD; SFLDF00273; (dimethylallyl)adenosine_tRNA; 1.
DR SFLD; SFLDG01061; methylthiotransferase; 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; Reference proteome;
KW S-adenosyl-L-methionine; Transferase; tRNA processing.
FT CHAIN 1..540
FT /note="tRNA-2-methylthio-N(6)-dimethylallyladenosine
FT synthase"
FT /id="PRO_0000374312"
FT DOMAIN 4..120
FT /note="MTTase N-terminal"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01864"
FT DOMAIN 143..374
FT /note="Radical SAM core"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01266"
FT DOMAIN 376..468
FT /note="TRAM"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01864"
FT REGION 480..540
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 13
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 540 AA; 57332 MW; AF15C6F4AD17A391 CRC64;
MNGRSYEVRT FGCQMNVHDS ERLCGLLESA GYSPVDPGGE ADVVVFNTCA VRENADNRLY
GNLGQLVPVK KGHPGMQIAV GGCLAQKDRA AILDRAPWVD VVFGTHNLHR LPVLLERARH
NAAAQVEIAE ALEVFPSSLP TRRASHHSAW VSISVGCDNT CTFCIVPSLR GRERDRRPGD
VLAEVEALVA EGALEITLLG QNVNSYGRSL GDPGAFAKLL AACGRVDGLE RVRFTSPHPR
DFTDDVIEAM ATTSNVCHQL HMPLQSGSDT VLRRMRRSYR RDRFLGIVER VRAAMPDAAI
TTDIIVGFPG ETEADFADTL DVVRAARFSG AFTFQYSPRP GTPAATMDAQ VDRATVADRY
TRLVALQDEI SWAENRALVG RRVEVLVSEG EGRKDGATGR MSGRARDGRL VHFRADEAAS
SSTGSGPRAG GAAPAVAVAV APTVRPGDVV ETVVTRAAPH HLTADGPLRS HRATRAGDAW
ALGRDGDGGG AAAAQQPADG RPIVTLGIPS LRPSSPDPVG PASADAASAG ADACCTPVRR
