MIAB_CAMJE
ID MIAB_CAMJE Reviewed; 433 AA.
AC Q0PB55;
DT 05-MAY-2009, integrated into UniProtKB/Swiss-Prot.
DT 19-SEP-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}; OrderedLocusNames=Cj0458c;
OS Campylobacter jejuni subsp. jejuni serotype O:2 (strain ATCC 700819 / NCTC
OS 11168).
OC Bacteria; Proteobacteria; Epsilonproteobacteria; Campylobacterales;
OC Campylobacteraceae; Campylobacter.
OX NCBI_TaxID=192222;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 700819 / NCTC 11168;
RX PubMed=10688204; DOI=10.1038/35001088;
RA Parkhill J., Wren B.W., Mungall K.L., Ketley J.M., Churcher C.M.,
RA Basham D., Chillingworth T., Davies R.M., Feltwell T., Holroyd S.,
RA Jagels K., Karlyshev A.V., Moule S., Pallen M.J., Penn C.W., Quail M.A.,
RA Rajandream M.A., Rutherford K.M., van Vliet A.H.M., Whitehead S.,
RA Barrell B.G.;
RT "The genome sequence of the food-borne pathogen Campylobacter jejuni
RT reveals hypervariable sequences.";
RL Nature 403:665-668(2000).
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; AL111168; CAL34606.1; -; Genomic_DNA.
DR PIR; E81390; E81390.
DR RefSeq; WP_002858634.1; NC_002163.1.
DR RefSeq; YP_002343892.1; NC_002163.1.
DR AlphaFoldDB; Q0PB55; -.
DR SMR; Q0PB55; -.
DR IntAct; Q0PB55; 2.
DR STRING; 192222.Cj0458c; -.
DR PaxDb; Q0PB55; -.
DR PRIDE; Q0PB55; -.
DR EnsemblBacteria; CAL34606; CAL34606; Cj0458c.
DR GeneID; 904781; -.
DR KEGG; cje:Cj0458c; -.
DR PATRIC; fig|192222.6.peg.450; -.
DR eggNOG; COG0621; Bacteria.
DR HOGENOM; CLU_018697_2_0_7; -.
DR OMA; CEHFHIP; -.
DR Proteomes; UP000000799; 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; 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..433
FT /note="tRNA-2-methylthio-N(6)-dimethylallyladenosine
FT synthase"
FT /id="PRO_0000374198"
FT DOMAIN 4..119
FT /note="MTTase N-terminal"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01864"
FT DOMAIN 137..370
FT /note="Radical SAM core"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01266"
FT DOMAIN 373..433
FT /note="TRAM"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01864"
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 50
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 82
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 151
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 155
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 158
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 433 AA; 49474 MW; EBA5C4FEED42C938 CRC64;
MSAKKLFIQT LGCAMNVRDS EHMIAELTQK ENYALTEDIK EADLILINTC SVREKPVHKL
FSEVGGFEKV KKEGAKIGVC GCTASHLGNE IFKRAPYVDF VLGARNISKI TQAIKTPKFM
GVDIDYDESE FAFADFRNSI YKSYINISIG CDKHCTYCIV PHTRGDEISI PFNIIYKEAQ
KAIEKGAKEI FLLGQNVNNY GKRFRNEHKK MDFSDLLEEL STIEGLERIR FTSPHPLHMD
DKFLEVFANN PKVCKSMHMP LQSGSSEILK AMKRGYTKEW YLNRALKLRE LCPNVSISTD
IIVAFPGESE KDFEETVDVL EKVRFEQIFS FKYSKRPLTK AATMPNQIDE EIASRRLSTL
QNRHSEILDK IVKKQENKTF KVLFEELRAG NSIAGRTDNN FLVQVEGSEE LLGQFKEVKI
TNAKRMVLYG EIV
