THII_VIBCH
ID THII_VIBCH Reviewed; 483 AA.
AC Q9KTK8;
DT 26-JUL-2002, integrated into UniProtKB/Swiss-Prot.
DT 26-JUL-2002, sequence version 2.
DT 03-AUG-2022, entry version 116.
DE RecName: Full=tRNA sulfurtransferase {ECO:0000255|HAMAP-Rule:MF_00021};
DE EC=2.8.1.4 {ECO:0000255|HAMAP-Rule:MF_00021};
DE AltName: Full=Sulfur carrier protein ThiS sulfurtransferase {ECO:0000255|HAMAP-Rule:MF_00021};
DE AltName: Full=Thiamine biosynthesis protein ThiI {ECO:0000255|HAMAP-Rule:MF_00021};
DE AltName: Full=tRNA 4-thiouridine synthase {ECO:0000255|HAMAP-Rule:MF_00021};
GN Name=thiI {ECO:0000255|HAMAP-Rule:MF_00021}; OrderedLocusNames=VC_0894;
OS Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Vibrionales; Vibrionaceae;
OC Vibrio.
OX NCBI_TaxID=243277;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 39315 / El Tor Inaba N16961;
RX PubMed=10952301; DOI=10.1038/35020000;
RA Heidelberg J.F., Eisen J.A., Nelson W.C., Clayton R.A., Gwinn M.L.,
RA Dodson R.J., Haft D.H., Hickey E.K., Peterson J.D., Umayam L.A., Gill S.R.,
RA Nelson K.E., Read T.D., Tettelin H., Richardson D.L., Ermolaeva M.D.,
RA Vamathevan J.J., Bass S., Qin H., Dragoi I., Sellers P., McDonald L.A.,
RA Utterback T.R., Fleischmann R.D., Nierman W.C., White O., Salzberg S.L.,
RA Smith H.O., Colwell R.R., Mekalanos J.J., Venter J.C., Fraser C.M.;
RT "DNA sequence of both chromosomes of the cholera pathogen Vibrio
RT cholerae.";
RL Nature 406:477-483(2000).
CC -!- FUNCTION: Catalyzes the ATP-dependent transfer of a sulfur to tRNA to
CC produce 4-thiouridine in position 8 of tRNAs, which functions as a
CC near-UV photosensor. Also catalyzes the transfer of sulfur to the
CC sulfur carrier protein ThiS, forming ThiS-thiocarboxylate. This is a
CC step in the synthesis of thiazole, in the thiamine biosynthesis
CC pathway. The sulfur is donated as persulfide by IscS.
CC {ECO:0000255|HAMAP-Rule:MF_00021}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[ThiI sulfur-carrier protein]-S-sulfanyl-L-cysteine + a
CC uridine in tRNA + ATP + H(+) + 2 reduced [2Fe-2S]-[ferredoxin] =
CC [ThiI sulfur-carrier protein]-L-cysteine + a 4-thiouridine in tRNA +
CC AMP + diphosphate + 2 oxidized [2Fe-2S]-[ferredoxin];
CC Xref=Rhea:RHEA:24176, Rhea:RHEA-COMP:10000, Rhea:RHEA-COMP:10001,
CC Rhea:RHEA-COMP:13337, Rhea:RHEA-COMP:13338, Rhea:RHEA-COMP:13339,
CC Rhea:RHEA-COMP:13340, ChEBI:CHEBI:15378, ChEBI:CHEBI:29950,
CC ChEBI:CHEBI:30616, ChEBI:CHEBI:33019, ChEBI:CHEBI:33737,
CC ChEBI:CHEBI:33738, ChEBI:CHEBI:61963, ChEBI:CHEBI:65315,
CC ChEBI:CHEBI:136798, ChEBI:CHEBI:456215; EC=2.8.1.4;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00021};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[sulfur-carrier protein ThiS]-C-terminal Gly-Gly-AMP + AH2 +
CC S-sulfanyl-L-cysteinyl-[cysteine desulfurase] = [sulfur-carrier
CC protein ThiS]-C-terminal Gly-NH-CH2-C(O)SH + A + AMP + H(+) + L-
CC cysteinyl-[cysteine desulfurase]; Xref=Rhea:RHEA:43340, Rhea:RHEA-
CC COMP:12157, Rhea:RHEA-COMP:12158, Rhea:RHEA-COMP:12908, Rhea:RHEA-
CC COMP:12910, ChEBI:CHEBI:13193, ChEBI:CHEBI:15378, ChEBI:CHEBI:17499,
CC ChEBI:CHEBI:29950, ChEBI:CHEBI:61963, ChEBI:CHEBI:90618,
CC ChEBI:CHEBI:90619, ChEBI:CHEBI:456215; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_00021};
CC -!- PATHWAY: Cofactor biosynthesis; thiamine diphosphate biosynthesis.
CC {ECO:0000255|HAMAP-Rule:MF_00021}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00021}.
CC -!- SIMILARITY: Belongs to the ThiI family. {ECO:0000255|HAMAP-
CC Rule:MF_00021}.
CC -!- SEQUENCE CAUTION:
CC Sequence=AAF94056.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR EMBL; AE003852; AAF94056.1; ALT_INIT; Genomic_DNA.
DR PIR; E82267; E82267.
DR RefSeq; NP_230541.2; NC_002505.1.
DR RefSeq; WP_000668918.1; NZ_LT906614.1.
DR AlphaFoldDB; Q9KTK8; -.
DR SMR; Q9KTK8; -.
DR STRING; 243277.VC_0894; -.
DR DNASU; 2614123; -.
DR EnsemblBacteria; AAF94056; AAF94056; VC_0894.
DR KEGG; vch:VC_0894; -.
DR PATRIC; fig|243277.26.peg.852; -.
DR eggNOG; COG0301; Bacteria.
DR eggNOG; COG0607; Bacteria.
DR HOGENOM; CLU_037952_4_1_6; -.
DR OMA; SMPEFCG; -.
DR UniPathway; UPA00060; -.
DR Proteomes; UP000000584; Chromosome 1.
DR GO; GO:0005829; C:cytosol; IBA:GO_Central.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0004810; F:tRNA adenylyltransferase activity; IEA:InterPro.
DR GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0140741; F:tRNA U4 sulfurtransferase; IEA:UniProtKB-EC.
DR GO; GO:0009228; P:thiamine biosynthetic process; IEA:UniProtKB-UniRule.
DR GO; GO:0009229; P:thiamine diphosphate biosynthetic process; IEA:UniProtKB-UniPathway.
DR GO; GO:0052837; P:thiazole biosynthetic process; IBA:GO_Central.
DR GO; GO:0002937; P:tRNA 4-thiouridine biosynthesis; IBA:GO_Central.
DR CDD; cd01712; ThiI; 1.
DR Gene3D; 3.40.250.10; -; 1.
DR Gene3D; 3.40.50.620; -; 1.
DR HAMAP; MF_00021; ThiI; 1.
DR InterPro; IPR001763; Rhodanese-like_dom.
DR InterPro; IPR036873; Rhodanese-like_dom_sf.
DR InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR InterPro; IPR026340; Thiazole_biosynth_dom.
DR InterPro; IPR020536; ThiI_AANH.
DR InterPro; IPR004114; THUMP_dom.
DR InterPro; IPR003720; tRNA_STrfase.
DR Pfam; PF02568; ThiI; 1.
DR Pfam; PF02926; THUMP; 1.
DR SMART; SM00981; THUMP; 1.
DR SUPFAM; SSF52821; SSF52821; 1.
DR TIGRFAMs; TIGR04271; ThiI_C_thiazole; 1.
DR TIGRFAMs; TIGR00342; TIGR00342; 1.
DR PROSITE; PS50206; RHODANESE_3; 1.
DR PROSITE; PS51165; THUMP; 1.
PE 3: Inferred from homology;
KW ATP-binding; Cytoplasm; Disulfide bond; Nucleotide-binding;
KW Redox-active center; Reference proteome; RNA-binding;
KW Thiamine biosynthesis; Transferase; tRNA-binding.
FT CHAIN 1..483
FT /note="tRNA sulfurtransferase"
FT /id="PRO_0000154884"
FT DOMAIN 61..165
FT /note="THUMP"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00021"
FT DOMAIN 405..483
FT /note="Rhodanese"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00021"
FT ACT_SITE 457
FT /note="Cysteine persulfide intermediate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00021"
FT BINDING 183..184
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00021"
FT BINDING 265
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00021"
FT BINDING 287
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00021"
FT BINDING 296
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00021"
FT DISULFID 344..457
FT /note="Redox-active"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00021"
SQ SEQUENCE 483 AA; 54328 MW; 1EC11A83C24B1369 CRC64;
MKFIVKPHPE IFVKSESVRK RFTKILESNI RIIVKARTQG VAVFNRRDHI EVTSNSDTYY
AEVLEILTTT PGIQQVLEVQ QSSFTDLHNI YEQVLELNRA NLENKTFVVR AKRRGKHDFT
SIELERYVGG GLNQAIASAK VKLINPDVTV QVEVVDELLN QVIARHKGLG GFPLGTQEDV
LSLISGGFDS GVSSYLHIKR GSKVHYCFFN LGGPAHEIGV KQTAYYLWQK YGSSAKVRFI
AIDFAPVVAE ILEKIDDGQM GVVLKRMFMR TAGMVAEKFG IQALVTGEAL GQVSSQTLTN
LRHIDNVTDT LILRPLINWD KEDIIRLARE IGTEDFAKTM PEFCGVISKS PTVKAVKEKL
EEEEAKFDFA LLDQVVYNAR QIDIRDIGKE SLEKAPEVEL VNSAEEGNAV VLDIRSPDEE
DESPLEIVGV EVKHLPFYKL ATQFGDLDQS KTYLLYCSRG VMSRLQALYL QEQGFNNVKV
YRP
