SYT_STRP8
ID SYT_STRP8 Reviewed; 647 AA.
AC Q8P234;
DT 25-NOV-2002, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2002, sequence version 1.
DT 03-AUG-2022, entry version 118.
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=spyM18_0576;
OS Streptococcus pyogenes serotype M18 (strain MGAS8232).
OC Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC Streptococcus.
OX NCBI_TaxID=186103;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=MGAS8232;
RX PubMed=11917108; DOI=10.1073/pnas.062526099;
RA Smoot J.C., Barbian K.D., Van Gompel J.J., Smoot L.M., Chaussee M.S.,
RA Sylva G.L., Sturdevant D.E., Ricklefs S.M., Porcella S.F., Parkins L.D.,
RA Beres S.B., Campbell D.S., Smith T.M., Zhang Q., Kapur V., Daly J.A.,
RA Veasy L.G., Musser J.M.;
RT "Genome sequence and comparative microarray analysis of serotype M18 group
RT A Streptococcus strains associated with acute rheumatic fever outbreaks.";
RL Proc. Natl. Acad. Sci. U.S.A. 99:4668-4673(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; AE009949; AAL97270.1; -; Genomic_DNA.
DR RefSeq; WP_002985672.1; NC_003485.1.
DR AlphaFoldDB; Q8P234; -.
DR SMR; Q8P234; -.
DR GeneID; 57852254; -.
DR KEGG; spm:spyM18_0576; -.
DR HOGENOM; CLU_008554_0_1_9; -.
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; 3.10.20.30; -; 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 Aminoacyl-tRNA synthetase; ATP-binding; Cytoplasm; Ligase; Metal-binding;
KW Nucleotide-binding; Protein biosynthesis; RNA-binding; tRNA-binding; Zinc.
FT CHAIN 1..647
FT /note="Threonine--tRNA ligase"
FT /id="PRO_0000101065"
FT DOMAIN 1..61
FT /note="TGS"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01228"
FT REGION 240..538
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 515
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
SQ SEQUENCE 647 AA; 74275 MW; 3826F5A623A6EA0B CRC64;
MIKITFPDGA VREFESGVTT FDIAESISKS LAKKALAGKF NDQLIDTTRA IEEDGSIEIV
TPDHKDAYEV LRHSAAHLFA QAAKRLFPNL HLGVGPAIAE GFYYDTDNAE GQISNEDLPR
IEAEMQKIVT ENYPCIREEV TKEEALELFK DDPYKVELIN EHAGAGLTVY RQGEFVDLCR
GPHVPSTGRI QVFHLLNVAG AYWRGNSDNN MMQRIYGTAW FDKKDLKAYL TRLEEAKERD
HRKLGKELDL FMISQEVGQG LPFWLPDGAT IRRTLERYIT DKELASGYQH VYTPPLASVE
LYKTSGHWDH YQEDMFPVMD MGDGEEFVLR PMNCPHHIQV YKNHVRSYRE LPIRIAELGM
MHRYEKSGAL SGLQRVREMT LNDGHIFVTP EQIQEEFQRA LQLIIDVYAD FNLTDYRFRL
SYRDPNDTHK YYDNDEMWEN AQSMLKAALD EMGVDYFEAE GEAAFYGPKL DIQVKTALGN
EETLSTIQLD FLLPERFDLK YIGADGEEHR PVMIHRGVIS TMERFTAILI ETYKGAFPTW
LAPHQVTVIP ISNEAHIDYA WEVAKTLRDR GVRADVDDRN EKMQYKIRAS QTSKIPYQLI
VGDKEMEDKS VNVRRYGSKA THTESVEEFV ENILADIARK SRPDAQA
