SYT_PSESY
ID SYT_PSESY Reviewed; 227 AA.
AC P52833;
DT 01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-1996, sequence version 1.
DT 25-MAY-2022, entry version 97.
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};
DE Flags: Fragment;
GN Name=thrS {ECO:0000255|HAMAP-Rule:MF_00184};
OS Pseudomonas syringae pv. syringae.
OC Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC Pseudomonadaceae; Pseudomonas; Pseudomonas syringae.
OX NCBI_TaxID=321;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=SUPP27;
RX PubMed=8626280; DOI=10.1128/jb.178.6.1548-1555.1996;
RA Kitten T., Willis D.K.;
RT "Suppression of a sensor kinase-dependent phenotype in Pseudomonas syringae
RT by ribosomal proteins L35 and L20.";
RL J. Bacteriol. 178:1548-1555(1996).
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 -!- 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; U44118; AAB05013.1; -; Genomic_DNA.
DR AlphaFoldDB; P52833; -.
DR SMR; P52833; -.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR GO; GO:0004829; F:threonine-tRNA ligase activity; IEA:UniProtKB-EC.
DR GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-KW.
DR GO; GO:0006435; P:threonyl-tRNA aminoacylation; IEA:InterPro.
DR Gene3D; 3.30.930.10; -; 1.
DR Gene3D; 3.40.50.800; -; 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 PANTHER; PTHR11451; PTHR11451; 1.
DR Pfam; PF03129; HGTP_anticodon; 1.
DR Pfam; PF00587; tRNA-synt_2b; 1.
DR PRINTS; PR01047; TRNASYNTHTHR.
DR SUPFAM; SSF55681; SSF55681; 1.
DR PROSITE; PS50862; AA_TRNA_LIGASE_II; 1.
PE 3: Inferred from homology;
KW Aminoacyl-tRNA synthetase; ATP-binding; Cytoplasm; Ligase;
KW Nucleotide-binding; Protein biosynthesis; RNA-binding; tRNA-binding.
FT CHAIN <1..227
FT /note="Threonine--tRNA ligase"
FT /id="PRO_0000101030"
FT REGION <1..120
FT /note="Catalytic"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
FT NON_TER 1
SQ SEQUENCE 227 AA; 25446 MW; 0F4D0AC976D2A5E1 CRC64;
DIELKLSTRP EKRVGSDELW DRAESALASA LDSAGQPYDL QPGEGAFYGP KIEFSLKDCL
GRVWQCGTLQ LDFNLPIRLS AEYVSEDNSR KNPVMLHRAI LGSFERFIGI LIEHYEGAFP
AWLAPTQAVI MNITDKQADF ALEVEKTLAE SGFRAKSDLR NEKIGFKIRE HTLLKVPYLL
VIGDREVEMQ TVAVRTREGA DLGSMPVAQF AEFLAQAVSR RGRQDTE
