ID E8R6G7_ISOPI Unreviewed; 633 AA.
AC E8R6G7;
DT 05-APR-2011, integrated into UniProtKB/TrEMBL.
DT 05-APR-2011, sequence version 1.
DT 24-JAN-2024, entry version 72.
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 OrderedLocusNames=Isop_2300 {ECO:0000313|EMBL:ADV62878.1};
OS Isosphaera pallida (strain ATCC 43644 / DSM 9630 / IS1B).
OC Bacteria; Planctomycetota; Planctomycetia; Isosphaerales; Isosphaeraceae;
OC Isosphaera.
OX NCBI_TaxID=575540 {ECO:0000313|EMBL:ADV62878.1, ECO:0000313|Proteomes:UP000008631};
RN [1]
RP NUCLEOTIDE SEQUENCE.
RC STRAIN=ATCC 43644;
RG US DOE Joint Genome Institute (JGI-PGF);
RA Lucas S., Copeland A., Lapidus A., Bruce D., Goodwin L., Pitluck S.,
RA Kyrpides N., Mavromatis K., Pagani I., Ivanova N., Saunders E., Brettin T.,
RA Detter J.C., Han C., Tapia R., Land M., Hauser L., Markowitz V.,
RA Cheng J.-F., Hugenholtz P., Woyke T., Wu D., Eisen J.A.;
RT "The complete sequence of chromosome of Isophaera pallida ATCC 43644.";
RL Submitted (NOV-2010) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:ADV62878.1, ECO:0000313|Proteomes:UP000008631}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 43644 / DSM 9630 / IS1B
RC {ECO:0000313|Proteomes:UP000008631};
RX PubMed=21475588; DOI=10.4056/sigs.1533840;
RG US DOE Joint Genome Institute (JGI-PGF);
RA Goker M., Cleland D., Saunders E., Lapidus A., Nolan M., Lucas S.,
RA Hammon N., Deshpande S., Cheng J.F., Tapia R., Han C., Goodwin L.,
RA Pitluck S., Liolios K., Pagani I., Ivanova N., Mavromatis K., Pati A.,
RA Chen A., Palaniappan K., Land M., Hauser L., Chang Y.J., Jeffries C.D.,
RA Detter J.C., Beck B., Woyke T., Bristow J., Eisen J.A., Markowitz V.,
RA Hugenholtz P., Kyrpides N.C., Klenk H.P.;
RT "Complete genome sequence of Isosphaera pallida type strain (IS1B).";
RL Stand. Genomic Sci. 4:63-71(2011).
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}.
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DR EMBL; CP002353; ADV62878.1; -; Genomic_DNA.
DR AlphaFoldDB; E8R6G7; -.
DR STRING; 575540.Isop_2300; -.
DR KEGG; ipa:Isop_2300; -.
DR eggNOG; COG0621; Bacteria.
DR HOGENOM; CLU_018697_2_2_0; -.
DR InParanoid; E8R6G7; -.
DR Proteomes; UP000008631; 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 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; SFLDF00273; (dimethylallyl)adenosine_tRNA; 1.
DR SFLD; SFLDG01082; B12-binding_domain_containing; 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.
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:UP000008631};
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 45..161
FT /note="MTTase N-terminal"
FT /evidence="ECO:0000259|PROSITE:PS51449"
FT DOMAIN 197..430
FT /note="Radical SAM core"
FT /evidence="ECO:0000259|PROSITE:PS51918"
FT REGION 1..45
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 477..496
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 503..559
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 609..633
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 618..633
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 54
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01864"
FT BINDING 90
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01864"
FT BINDING 124
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01864"
FT BINDING 211
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 215
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 218
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 633 AA; 69325 MW; A8DC4F91BD8CE722 CRC64;
MASPNPDCDD DRPTPLIPSQ GTACAAPQPI DPERSAPGSD APPPRRLFIE TVGCQMNVLD
SELVVERLRR DGYELTSDPQ QADTILFNTC SVRQHAEDKV YSALGRLRGL KAEHPEVTIG
VLGCMAQKDQ KRILQRAPHV DLMVGPGQLE VVPELIARAK NGERKLTAFS LPRTAGSRDR
VAASFNEFDP ARRKEARKVP FQAFVRIMMG CDKFCTYCIV PSVRGPEQSR HPDEIVEEVR
NLVDQGTREV TLLGQTVNSY RHKTPDGRIT SFADLLAKLH DIDGLRRIKF VTNYPNDMTD
ELLAAIRDLP RISRYLHVPA QSGCDQVLKR MKRGYTVGLY NDMMARIRET LPEAAVTSDF
IVGFCGETEA SFQKTVDLVR RWRFKNSFIF KYSPREGTKA YNLFPDDVPE AVKRRRNNEL
LAVQNAIALE DQQAFVGRTV EILVEGPSKA HLKAAGGPGA VFNGSASPAI VFRSIPSSAS
SHGSGIPDPD FGAEPAQDVA SPTLLTEPHS PIPIVSGAKD EGGSSRPSAL VSLAPPPRPH
LVALPTPPDR ESEEDRPLQL TGRTACDRIV VFEGHPRLIG SFLPVTIQAA SAVTLFGQAV
TRESVVAQAG AWEPESAESN DRSSRSKELG RLA
//