MIAB_MARMM
ID MIAB_MARMM Reviewed; 456 AA.
AC Q0AK79;
DT 05-MAY-2009, integrated into UniProtKB/Swiss-Prot.
DT 17-OCT-2006, sequence version 1.
DT 03-AUG-2022, entry version 93.
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=Mmar10_3033;
OS Maricaulis maris (strain MCS10).
OC Bacteria; Proteobacteria; Alphaproteobacteria; Maricaulales; Maricaulaceae;
OC Maricaulis.
OX NCBI_TaxID=394221;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=MCS10;
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 Saunders E., Brettin T., Bruce D., Han C., Tapia R., Gilna P., Schmutz J.,
RA Larimer F., Land M., Hauser L., Kyrpides N., Mikhailova N., Viollier P.,
RA Stephens C., Richardson P.;
RT "Complete sequence of Maricaulis maris MCS10.";
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; CP000449; ABI67314.1; -; Genomic_DNA.
DR RefSeq; WP_011644958.1; NC_008347.1.
DR AlphaFoldDB; Q0AK79; -.
DR SMR; Q0AK79; -.
DR STRING; 394221.Mmar10_3033; -.
DR EnsemblBacteria; ABI67314; ABI67314; Mmar10_3033.
DR KEGG; mmr:Mmar10_3033; -.
DR eggNOG; COG0621; Bacteria.
DR HOGENOM; CLU_018697_2_2_5; -.
DR OMA; CEHFHIP; -.
DR OrthoDB; 397139at2; -.
DR Proteomes; UP000001964; 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; Reference proteome;
KW S-adenosyl-L-methionine; Transferase; tRNA processing.
FT CHAIN 1..456
FT /note="tRNA-2-methylthio-N(6)-dimethylallyladenosine
FT synthase"
FT /id="PRO_0000374369"
FT DOMAIN 6..125
FT /note="MTTase N-terminal"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01864"
FT DOMAIN 149..385
FT /note="Radical SAM core"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01266"
FT DOMAIN 388..450
FT /note="TRAM"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01864"
FT BINDING 15
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 88
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 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 167
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 170
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 456 AA; 49813 MW; E92B35FB01BE7310 CRC64;
MSTTRKRLFI KTYGCQMNVY DSDRMKDVLT PLGYESAETP EGADLVILNT CHIREKAAEK
VYSELGRLRP LKDEKAASGG MTIAVAGCVA QAEGAEIMKR APVVDLVVGP QTYHKLPELI
AQAHRAKGEA LDTEFEVEDK FDRLGSDRQV EGYSAFVTVQ EGCDKFCTFC VVPYTRGAEW
SRPVDQIVAE IRALAAKGIR EVTLLGQNVN AFHGAPPSGR EAEGAWGLGQ LVRHVALIGG
IERIRFTTSH PRDMDEVLIQ AFADTPKLMP YFHLPVQAGS DKILKSMNRQ HTAEEYVAII
DRLRAARPDI AISGDMIVGF PGETDADFEA TLDLVRRVKF ASCFSFKYSK RPGTPGAAMF
NQVDEGVKSA RLAVLQELLS DQQAAFNESM IGRTLPVLFE KPGRMGGQLH GRSPYLQSVH
VDGPAELIGQ VGEVRIEAAS RNSLSGSLTG SKRSAA
