ID   SYT_BORHD               Reviewed;         583 AA.
AC   B2S162;
DT   24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT   01-JUL-2008, sequence version 1.
DT   03-AUG-2022, entry version 82.
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=BH0720;
OS   Borrelia hermsii (strain HS1 / DAH).
OC   Bacteria; Spirochaetes; Spirochaetales; Borreliaceae; Borrelia.
OX   NCBI_TaxID=314723;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=HS1 / DAH;
RA   Porcella S.F., Raffel S.J., Schrumpf M.E., Montgomery B., Smith T.,
RA   Schwan T.G.;
RT   "The genome sequence of Borrelia hermsii and Borrelia turicatae:
RT   comparative analysis of two agents of endemic N. America relapsing fever.";
RL   Submitted (DEC-2004) to the EMBL/GenBank/DDBJ databases.
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; CP000048; AAX17218.1; -; Genomic_DNA.
DR   RefSeq; WP_012422468.1; NC_010673.1.
DR   AlphaFoldDB; B2S162; -.
DR   SMR; B2S162; -.
DR   KEGG; bhr:BH0720; -.
DR   HOGENOM; CLU_008554_0_1_12; -.
DR   OMA; FYYDFAY; -.
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; 3.30.930.10; -; 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; 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; 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   TIGRFAMs; TIGR00418; thrS; 1.
DR   PROSITE; PS50862; AA_TRNA_LIGASE_II; 1.
PE   3: Inferred from homology;
KW   Aminoacyl-tRNA synthetase; ATP-binding; Cytoplasm; Ligase; Metal-binding;
KW   Nucleotide-binding; Protein biosynthesis; RNA-binding; tRNA-binding; Zinc.
FT   CHAIN           1..583
FT                   /note="Threonine--tRNA ligase"
FT                   /id="PRO_1000098544"
FT   REGION          185..478
FT                   /note="Catalytic"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
FT   BINDING         278
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
FT   BINDING         329
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
FT   BINDING         455
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
SQ   SEQUENCE   583 AA;  68115 MW;  F7759BCB7D0C2BF0 CRC64;
     MSEKLDRESI LYKKRHSIAH VMAEAVLELF PNTKIAIGPP IKDGFYYDFD FEKHITEDDL
     LLIEQKMREI LKTGSPFVKE VITKEQALML FKDEPYKMDL IRGLAITDEI SIYKSHNFTD
     LCKGPHVDNM GKIDPKAFKL TSIAGAYWRG DEKNKMLTRI YGTLWNNEKD LKAYLKLREE
     IKRRDHRKLG RELDLFSVHE DIGPGLIFFH PNGARIRAII EDFWREEHFK NGYDVLFTPH
     IGKSCLWETS GHLDFYKESM FEKMEMDKSN YYVKPMNCPF HIAIYNTGKH SYRDLPFRWA
     ELGTVYRYEK IGALHGTMRV RGFTQDDAHI ICAYEQVKSE VQEVLRFALY MWNQFGFADL
     KAYLSTKPEK AVGDKDDWEM SVKVLEEALI DLNIAYDIDE GGGAFYGPKI DLKIIDSLGR
     EWQMSTIQFD FNLPERFKMT YTAEDGKEKR PFMIHRALLG SIERFFGILV EHYGGAFPVW
     LAPLQVIIIP VNNVVEEYAL EILSLFKNEG IRIKLDNDCN MRMNAKIRQY QSKKVPYMFI
     IGEKEVVEGK ISIRTRTNDQ INGLELKEAL EFVRLKVKNK EIL