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Database: UniProt
Entry: A0A1I1HDF9_9FIRM
LinkDB: A0A1I1HDF9_9FIRM
Original site: A0A1I1HDF9_9FIRM 
ID   A0A1I1HDF9_9FIRM        Unreviewed;       398 AA.
AC   A0A1I1HDF9;
DT   22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT   22-NOV-2017, sequence version 1.
DT   24-JAN-2024, entry version 21.
DE   RecName: Full=Probable tRNA sulfurtransferase {ECO:0000256|HAMAP-Rule:MF_00021};
DE            EC=2.8.1.4 {ECO:0000256|HAMAP-Rule:MF_00021};
DE   AltName: Full=Sulfur carrier protein ThiS sulfurtransferase {ECO:0000256|HAMAP-Rule:MF_00021};
DE   AltName: Full=Thiamine biosynthesis protein ThiI {ECO:0000256|HAMAP-Rule:MF_00021};
DE   AltName: Full=tRNA 4-thiouridine synthase {ECO:0000256|HAMAP-Rule:MF_00021};
GN   Name=thiI {ECO:0000256|HAMAP-Rule:MF_00021};
GN   ORFNames=SAMN02910398_01697 {ECO:0000313|EMBL:SFC19140.1};
OS   Butyrivibrio sp. YAB3001.
OC   Bacteria; Bacillota; Clostridia; Eubacteriales; Lachnospiraceae;
OC   Butyrivibrio.
OX   NCBI_TaxID=1520812 {ECO:0000313|EMBL:SFC19140.1, ECO:0000313|Proteomes:UP000198944};
RN   [1] {ECO:0000313|EMBL:SFC19140.1, ECO:0000313|Proteomes:UP000198944}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=YAB3001 {ECO:0000313|EMBL:SFC19140.1,
RC   ECO:0000313|Proteomes:UP000198944};
RA   de Groot N.N.;
RL   Submitted (OCT-2016) to the EMBL/GenBank/DDBJ databases.
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:0000256|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:0000256|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:0000256|HAMAP-
CC         Rule:MF_00021};
CC   -!- PATHWAY: Cofactor biosynthesis; thiamine diphosphate biosynthesis.
CC       {ECO:0000256|HAMAP-Rule:MF_00021}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|ARBA:ARBA00004496,
CC       ECO:0000256|HAMAP-Rule:MF_00021}.
CC   -!- SIMILARITY: Belongs to the ThiI family. {ECO:0000256|HAMAP-
CC       Rule:MF_00021}.
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DR   EMBL; FOKR01000006; SFC19140.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0A1I1HDF9; -.
DR   STRING; 1520812.SAMN02910398_01697; -.
DR   OrthoDB; 9773948at2; -.
DR   UniPathway; UPA00060; -.
DR   Proteomes; UP000198944; Unassembled WGS sequence.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0004810; F:CCA tRNA nucleotidyltransferase activity; IEA:InterPro.
DR   GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0140741; F:tRNA-uracil-4 sulfurtransferase activity; 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:0034227; P:tRNA thio-modification; IEA:UniProtKB-UniRule.
DR   CDD; cd01712; ThiI; 1.
DR   CDD; cd11716; THUMP_ThiI; 1.
DR   Gene3D; 3.30.2130.30; -; 1.
DR   Gene3D; 3.40.50.620; HUPs; 1.
DR   HAMAP; MF_00021; ThiI; 1.
DR   InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR   InterPro; IPR020536; ThiI_AANH.
DR   InterPro; IPR004114; THUMP_dom.
DR   InterPro; IPR003720; tRNA_STrfase.
DR   NCBIfam; TIGR00342; tRNA 4-thiouridine(8) synthase ThiI; 1.
DR   PANTHER; PTHR43209; TRNA SULFURTRANSFERASE; 1.
DR   PANTHER; PTHR43209:SF1; TRNA SULFURTRANSFERASE; 1.
DR   Pfam; PF02568; ThiI; 1.
DR   Pfam; PF02926; THUMP; 1.
DR   SMART; SM00981; THUMP; 1.
DR   SUPFAM; SSF52402; Adenine nucleotide alpha hydrolases-like; 1.
DR   SUPFAM; SSF143437; THUMP domain-like; 1.
DR   PROSITE; PS51165; THUMP; 1.
PE   3: Inferred from homology;
KW   ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW   Rule:MF_00021};
KW   Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_00021};
KW   Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW   Rule:MF_00021}; Reference proteome {ECO:0000313|Proteomes:UP000198944};
KW   RNA-binding {ECO:0000256|ARBA:ARBA00022884, ECO:0000256|HAMAP-
KW   Rule:MF_00021};
KW   Thiamine biosynthesis {ECO:0000256|ARBA:ARBA00022977, ECO:0000256|HAMAP-
KW   Rule:MF_00021};
KW   Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW   Rule:MF_00021};
KW   tRNA-binding {ECO:0000256|ARBA:ARBA00022555, ECO:0000256|HAMAP-
KW   Rule:MF_00021}.
FT   DOMAIN          61..175
FT                   /note="THUMP"
FT                   /evidence="ECO:0000259|PROSITE:PS51165"
FT   BINDING         191..192
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00021"
FT   BINDING         216..217
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00021"
FT   BINDING         273
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00021"
FT   BINDING         295
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00021"
FT   BINDING         304
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00021"
SQ   SEQUENCE   398 AA;  44387 MW;  FC69AD177FC05A3A CRC64;
     MQYHAFIIKY AEIGVKGKNR YIFEEALVRQ IERVLSKCDG TFKVSRVAGR IYIEAEGFDF
     NETVDKLGTV FGITGICPAV TINRDGDNHL PDIDGVAKAV IDFIDGVYPD KHKTFKVKVR
     RVDKSYPFDS MEMAAELGAR ILDAFDEMKV DVHNPEILLN VELREKLNIF SEIIPGPGGM
     PIGTAGKAML LLSGGIDSPV AGYMVAKRGV DIEAVYFNAP PYTSEKAKQK VVDLAKVISK
     YTGHVKLHVI NFTDIQMYIY EKCPHDELTI IMRRYMMKIA DKLAGDAGCM GLITGESIGQ
     VASQTMQSLM CTGEVVTDMP VYRPLIAFDK QDIVDVSVKI DAYETSILPY EDCCTIFVAK
     HPVTKPRLDI IKKHEELLSE KIDELVQTAL DTDEIIEV
//
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