ID A0A126RNS4_9SPHN Unreviewed; 428 AA.
AC A0A126RNS4;
DT 11-MAY-2016, integrated into UniProtKB/TrEMBL.
DT 11-MAY-2016, sequence version 1.
DT 24-JAN-2024, entry version 36.
DE RecName: Full=tRNA-2-methylthio-N(6)-dimethylallyladenosine synthase {ECO:0000256|ARBA:ARBA00033765, ECO:0000256|HAMAP-Rule:MF_01864};
DE EC=2.8.4.3 {ECO:0000256|ARBA:ARBA00033765, ECO:0000256|HAMAP-Rule:MF_01864};
DE AltName: Full=(Dimethylallyl)adenosine tRNA methylthiotransferase MiaB {ECO:0000256|HAMAP-Rule:MF_01864};
DE AltName: Full=tRNA-i(6)A37 methylthiotransferase {ECO:0000256|HAMAP-Rule:MF_01864};
GN Name=miaB {ECO:0000256|HAMAP-Rule:MF_01864};
GN ORFNames=K426_14050 {ECO:0000313|EMBL:AMK23742.1};
OS Sphingobium sp. TKS.
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Sphingomonadales;
OC Sphingomonadaceae; Sphingobium.
OX NCBI_TaxID=1315974 {ECO:0000313|EMBL:AMK23742.1, ECO:0000313|Proteomes:UP000060779};
RN [1] {ECO:0000313|Proteomes:UP000060779}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=TKS {ECO:0000313|Proteomes:UP000060779};
RA Tabata M.;
RT "Whole genome sequence of gamma-HCH degrading bacterium Sphingobium sp.
RT TKS.";
RL Submitted (APR-2013) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:AMK23742.1, ECO:0000313|Proteomes:UP000060779}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=TKS {ECO:0000313|EMBL:AMK23742.1,
RC ECO:0000313|Proteomes:UP000060779};
RX PubMed=27056231;
RA Tabata M., Ohhata S., Kawasumi T., Nikawadori Y., Kishida K., Sato T.,
RA Ohtsubo Y., Tsuda M., Nagata Y.;
RT "Complete Genome Sequence of a gamma-Hexachlorocyclohexane Degrader,
RT Sphingobium sp. Strain TKS, Isolated from a gamma-Hexachlorocyclohexane-
RT Degrading Microbial Community.";
RL Genome Announc. 4:0-0(2016).
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:0000256|ARBA:ARBA00003234,
CC ECO:0000256|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:0000256|HAMAP-
CC Rule:MF_01864};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000256|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:0000256|HAMAP-Rule:MF_01864};
CC -!- SUBUNIT: Monomer. {ECO:0000256|HAMAP-Rule:MF_01864}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_01864}.
CC -!- SIMILARITY: Belongs to the methylthiotransferase family. MiaB
CC subfamily. {ECO:0000256|HAMAP-Rule:MF_01864}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_01864}.
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DR EMBL; CP005083; AMK23742.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A126RNS4; -.
DR STRING; 1315974.K426_14050; -.
DR KEGG; spht:K426_14050; -.
DR PATRIC; fig|1315974.3.peg.2954; -.
DR Proteomes; UP000060779; Chromosome 1.
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 CDD; cd01335; Radical_SAM; 1.
DR Gene3D; 3.40.50.12160; Methylthiotransferase, N-terminal domain; 1.
DR Gene3D; 3.80.30.20; tm_1862 like domain; 1.
DR HAMAP; MF_01864; tRNA_metthiotr_MiaB; 1.
DR InterPro; IPR006638; Elp3/MiaA/NifB-like_rSAM.
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 NCBIfam; TIGR01574; miaB-methiolase; 1.
DR NCBIfam; TIGR00089; MiaB/RimO family radical SAM methylthiotransferase; 1.
DR PANTHER; PTHR43020; CDK5 REGULATORY SUBUNIT-ASSOCIATED PROTEIN 1; 1.
DR PANTHER; PTHR43020:SF2; MITOCHONDRIAL TRNA METHYLTHIOTRANSFERASE CDK5RAP1; 1.
DR Pfam; PF04055; Radical_SAM; 1.
DR Pfam; PF01938; TRAM; 1.
DR Pfam; PF00919; UPF0004; 1.
DR SFLD; SFLDG01082; B12-binding_domain_containing; 1.
DR SFLD; SFLDG01061; methylthiotransferase; 1.
DR SFLD; SFLDS00029; Radical_SAM; 1.
DR SMART; SM00729; Elp3; 1.
DR SUPFAM; SSF102114; Radical SAM enzymes; 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 {ECO:0000256|ARBA:ARBA00022485, ECO:0000256|HAMAP-Rule:MF_01864};
KW Cytoplasm {ECO:0000256|HAMAP-Rule:MF_01864};
KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|HAMAP-Rule:MF_01864};
KW Iron-sulfur {ECO:0000256|ARBA:ARBA00023014, ECO:0000256|HAMAP-
KW Rule:MF_01864};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_01864}; Reference proteome {ECO:0000313|Proteomes:UP000060779};
KW S-adenosyl-L-methionine {ECO:0000256|ARBA:ARBA00022691, ECO:0000256|HAMAP-
KW Rule:MF_01864};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_01864}; tRNA processing {ECO:0000256|HAMAP-Rule:MF_01864}.
FT DOMAIN 1..104
FT /note="MTTase N-terminal"
FT /evidence="ECO:0000259|PROSITE:PS51449"
FT DOMAIN 127..359
FT /note="Radical SAM core"
FT /evidence="ECO:0000259|PROSITE:PS51918"
FT DOMAIN 362..424
FT /note="TRAM"
FT /evidence="ECO:0000259|PROSITE:PS50926"
FT BINDING 141
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:0000256|HAMAP-Rule:MF_01864"
FT BINDING 145
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:0000256|HAMAP-Rule:MF_01864"
FT BINDING 148
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:0000256|HAMAP-Rule:MF_01864"
SQ SEQUENCE 428 AA; 46912 MW; F54520A3A45631F0 CRC64;
MNVYDGERMA EMLGERGMTA ATEGSEADLV ILNTCHIREK AVDKVYSDIG RLTREDGTRP
MIAVAGCVAQ AEGSEIQRRA RNVDIVVGPQ AYHHLPDLID KAGRGEQAVD TDMPLASKFG
ALPARTKQAR PTAFLTIMEG CDKFCTYCVV PYTRGAEISR TWSAILDEAM ALVDGGVREI
TLLGQNVNAW TGEDGKGRMQ GMDGLVRELA KIDALKRIRY TTSHPNDMSD GLIAAHGDEP
KLMPFLHLPV QSGNDRVLKA MNRSHSADSY LRIIERVREA RPDIALSGDF IVGFPGETDA
EFEDTLKIVE QVRYAQCYSF KYSSRPGTPA ADMDGQIPAE VMDERLARLQ AAINRHQVEF
NTATVGRRTD ILLERKGRHP GQLIGKTPWL QSVHVTAPDL GIGDMVEVDI ISAGPNSLAG
EPSRRKAA
//
