SYT_PROMT
ID SYT_PROMT Reviewed; 641 AA.
AC Q46LV3;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 13-SEP-2005, sequence version 1.
DT 03-AUG-2022, entry version 107.
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=PMN2A_0033;
OS Prochlorococcus marinus (strain NATL2A).
OC Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC Prochlorococcus.
OX NCBI_TaxID=59920;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=NATL2A;
RX PubMed=18159947; DOI=10.1371/journal.pgen.0030231;
RA Kettler G.C., Martiny A.C., Huang K., Zucker J., Coleman M.L., Rodrigue S.,
RA Chen F., Lapidus A., Ferriera S., Johnson J., Steglich C., Church G.M.,
RA Richardson P., Chisholm S.W.;
RT "Patterns and implications of gene gain and loss in the evolution of
RT Prochlorococcus.";
RL PLoS Genet. 3:2515-2528(2007).
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; CP000095; AAZ57525.1; -; Genomic_DNA.
DR RefSeq; WP_011293567.1; NC_007335.2.
DR AlphaFoldDB; Q46LV3; -.
DR SMR; Q46LV3; -.
DR STRING; 59920.PMN2A_0033; -.
DR EnsemblBacteria; AAZ57525; AAZ57525; PMN2A_0033.
DR KEGG; pmn:PMN2A_0033; -.
DR HOGENOM; CLU_008554_0_1_3; -.
DR OMA; FYYDFAY; -.
DR OrthoDB; 900765at2; -.
DR PhylomeDB; Q46LV3; -.
DR Proteomes; UP000002535; 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 Aminoacyl-tRNA synthetase; ATP-binding; Cytoplasm; Ligase; Metal-binding;
KW Nucleotide-binding; Protein biosynthesis; Reference proteome; RNA-binding;
KW tRNA-binding; Zinc.
FT CHAIN 1..641
FT /note="Threonine--tRNA ligase"
FT /id="PRO_1000020468"
FT DOMAIN 1..61
FT /note="TGS"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01228"
FT REGION 242..533
FT /note="Catalytic"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
FT BINDING 333
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
FT BINDING 384
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
FT BINDING 510
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
SQ SEQUENCE 641 AA; 73872 MW; 82C3A8BFA673A5D2 CRC64;
MPIITLPDGT EKKYDSAVTI DQIASEIGPG LAKAALAGRV NGELIDTCIP ITQNSHIQII
TSKDDEGLEI IRHSFAHLLG HAVKQLYPEA KMAIGPVIED GFYYDISYKD TFTPDDLLKI
EKRMKELVNR DYSVGVEIVS PEKAKEVFTD RGEIFKLDIV KNIPKNEIIK LYKHQEYIDM
CRGPHVPNTR HLRAFKLMKV SGAYWRGDSN NEMLQRIYGT AWKSSKELKE YLSRIEEAEK
RDHRKLGKKY SLFHSQEEAP GMVFWHPKGW TIYRILEDFI RETITKYDYQ EVKSPQVVDR
SLWEKSGHWD KFKEDMFTTT SENREYAIKP MNCPCHIQIF NQGLKSYRDL PIRLSEFGSC
HRNEPSGALH GLMRVRNFVQ DDAHIFCTDE QIQEEVQNFI DLVFEVYKTF GFDSILIKLS
TRPVKRVGSD DIWDKSEKAL SEALDSKGLD WSLLPGEGAF YGPKIEFSLK DCLNRVWQCG
TIQVDFSMPQ RLNASYIDIT GRKQTPVMLH RAILGSFERF IGILIENYSG NFPTWLSPIQ
IMIMGITDRN NEACFTAKDK LVDFGFRAEI DIRNEKVGFK IREHTMQRIP FLIIIGDKEE
ENSEISVRTR EGKDLGNMSI DKFKLIIDES ISKKGIQGNQ S
