ID   SYT_ECOL6               Reviewed;         642 AA.
AC   P0A8M4; P00955; P78166; P78241;
DT   21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT   07-JUN-2005, sequence version 1.
DT   03-AUG-2022, entry version 109.
DE   RecName: Full=Threonine--tRNA ligase {ECO:0000255|HAMAP-Rule:MF_00184};
DE            EC=6.1.1.3 {ECO:0000255|HAMAP-Rule:MF_00184};
DE   AltName: Full=Threonyl-tRNA synthetase {ECO:0000255|HAMAP-Rule:MF_00184};
DE            Short=ThrRS {ECO:0000255|HAMAP-Rule:MF_00184};
GN   Name=thrS {ECO:0000255|HAMAP-Rule:MF_00184}; OrderedLocusNames=c2116;
OS   Escherichia coli O6:H1 (strain CFT073 / ATCC 700928 / UPEC).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=199310;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CFT073 / ATCC 700928 / UPEC;
RX   PubMed=12471157; DOI=10.1073/pnas.252529799;
RA   Welch R.A., Burland V., Plunkett G. III, Redford P., Roesch P., Rasko D.,
RA   Buckles E.L., Liou S.-R., Boutin A., Hackett J., Stroud D., Mayhew G.F.,
RA   Rose D.J., Zhou S., Schwartz D.C., Perna N.T., Mobley H.L.T.,
RA   Donnenberg M.S., Blattner F.R.;
RT   "Extensive mosaic structure revealed by the complete genome sequence of
RT   uropathogenic Escherichia coli.";
RL   Proc. Natl. Acad. Sci. U.S.A. 99:17020-17024(2002).
CC   -!- FUNCTION: Catalyzes the attachment of threonine to tRNA(Thr) in a two-
CC       step reaction: L-threonine is first activated by ATP to form Thr-AMP
CC       and then transferred to the acceptor end of tRNA(Thr). Also edits
CC       incorrectly charged L-seryl-tRNA(Thr). {ECO:0000255|HAMAP-
CC       Rule:MF_00184}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + L-threonine + tRNA(Thr) = AMP + diphosphate + H(+) + L-
CC         threonyl-tRNA(Thr); Xref=Rhea:RHEA:24624, Rhea:RHEA-COMP:9670,
CC         Rhea:RHEA-COMP:9704, ChEBI:CHEBI:15378, ChEBI:CHEBI:30616,
CC         ChEBI:CHEBI:33019, ChEBI:CHEBI:57926, ChEBI:CHEBI:78442,
CC         ChEBI:CHEBI:78534, ChEBI:CHEBI:456215; EC=6.1.1.3;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00184};
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00184};
CC       Note=Binds 1 zinc ion per subunit. {ECO:0000255|HAMAP-Rule:MF_00184};
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00184}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00184}.
CC   -!- SIMILARITY: Belongs to the class-II aminoacyl-tRNA synthetase family.
CC       {ECO:0000255|HAMAP-Rule:MF_00184}.
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DR   EMBL; AE014075; AAN80575.1; -; Genomic_DNA.
DR   RefSeq; WP_001144202.1; NC_004431.1.
DR   AlphaFoldDB; P0A8M4; -.
DR   SMR; P0A8M4; -.
DR   STRING; 199310.c2116; -.
DR   EnsemblBacteria; AAN80575; AAN80575; c2116.
DR   GeneID; 58460397; -.
DR   KEGG; ecc:c2116; -.
DR   eggNOG; COG0441; Bacteria.
DR   HOGENOM; CLU_008554_0_1_6; -.
DR   OMA; FYYDFAY; -.
DR   BioCyc; ECOL199310:C2116-MON; -.
DR   SABIO-RK; P0A8M4; -.
DR   Proteomes; UP000001410; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0004829; F:threonine-tRNA ligase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0006435; P:threonyl-tRNA aminoacylation; IEA:UniProtKB-UniRule.
DR   CDD; cd00771; ThrRS_core; 1.
DR   Gene3D; 3.10.20.30; -; 1.
DR   Gene3D; 3.30.930.10; -; 1.
DR   Gene3D; 3.40.50.800; -; 1.
DR   HAMAP; MF_00184; Thr_tRNA_synth; 1.
DR   InterPro; IPR002314; aa-tRNA-synt_IIb.
DR   InterPro; IPR006195; aa-tRNA-synth_II.
DR   InterPro; IPR045864; aa-tRNA-synth_II/BPL/LPL.
DR   InterPro; IPR004154; Anticodon-bd.
DR   InterPro; IPR036621; Anticodon-bd_dom_sf.
DR   InterPro; IPR012675; Beta-grasp_dom_sf.
DR   InterPro; IPR004095; TGS.
DR   InterPro; IPR012676; TGS-like.
DR   InterPro; IPR002320; Thr-tRNA-ligase_IIa.
DR   InterPro; IPR018163; Thr/Ala-tRNA-synth_IIc_edit.
DR   InterPro; IPR033728; ThrRS_core.
DR   InterPro; IPR012947; tRNA_SAD.
DR   PANTHER; PTHR11451; PTHR11451; 1.
DR   Pfam; PF03129; HGTP_anticodon; 1.
DR   Pfam; PF02824; TGS; 1.
DR   Pfam; PF00587; tRNA-synt_2b; 1.
DR   Pfam; PF07973; tRNA_SAD; 1.
DR   PRINTS; PR01047; TRNASYNTHTHR.
DR   SMART; SM00863; tRNA_SAD; 1.
DR   SUPFAM; SSF55186; SSF55186; 1.
DR   SUPFAM; SSF55681; SSF55681; 1.
DR   SUPFAM; SSF81271; SSF81271; 1.
DR   TIGRFAMs; TIGR00418; thrS; 1.
DR   PROSITE; PS50862; AA_TRNA_LIGASE_II; 1.
DR   PROSITE; PS51880; TGS; 1.
PE   3: Inferred from homology;
KW   Acetylation; Aminoacyl-tRNA synthetase; ATP-binding; Cytoplasm; Ligase;
KW   Metal-binding; Nucleotide-binding; Protein biosynthesis; RNA-binding;
KW   tRNA-binding; Zinc.
FT   CHAIN           1..642
FT                   /note="Threonine--tRNA ligase"
FT                   /id="PRO_0000100974"
FT   DOMAIN          1..61
FT                   /note="TGS"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01228"
FT   REGION          243..534
FT                   /note="Catalytic"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
FT   BINDING         334
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
FT   BINDING         385
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
FT   BINDING         511
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
FT   MOD_RES         286
FT                   /note="N6-acetyllysine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
SQ   SEQUENCE   642 AA;  74014 MW;  38D8913B19CDAB7B CRC64;
     MPVITLPDGS QRHYDHAVSP MDVALDIGPG LAKACIAGRV NGELVDACDL IENDAQLSII
     TAKDEEGLEI IRHSCAHLLG HAIKQLWPHT KMAIGPVIDN GFYYDVDLDR TLTQEDVEAL
     EKRMHELAEK NYDVIKKKVS WHEARETFAN RGESYKVSIL DENIAHDDKP GLYFHEEYVD
     MCRGPHVPNM RFCHHFKLMK TAGAYWRGDS NNKMLQRIYG TAWADKKALN AYLQRLEEAA
     KRDHRKIGKQ LDLYHMQEEA PGMVFWHNDG WTIFRELEVF VRSKLKEYQY QEVKGPFMMD
     RVLWEKTGHW DNYKDAMFTT SSENREYCIK PMNCPGHVQI FNQGLKSYRD LPLRMAEFGS
     CHRNEPSGSL HGLMRVRGFT QDDAHIFCTE EQIRDEVNGC IRLVYDMYST FGFEKIVVKL
     STRPEKRIGS DEMWDRAEAD LAVALEENNI PFEYQLGEGA FYGPKIEFTL YDCLDRAWQC
     GTVQLDFSLP SRLSASYVGE DNERKVPVMI HRAILGSMER FIGILTEEFA GFFPTWLAPV
     QVVIMNITDS QSEYVNELTQ KLSNAGIRVK ADLRNEKIGF KIREHTLRRV PYMLVCGDKE
     VESGKVAVRT RRGKDLGSMD VNEVIEKLQQ EIRSRSLKQL EE