SYT_CYTH3
ID SYT_CYTH3 Reviewed; 645 AA.
AC Q11UK3;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 22-AUG-2006, sequence version 1.
DT 03-AUG-2022, entry version 94.
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=CHU_1643;
OS Cytophaga hutchinsonii (strain ATCC 33406 / DSM 1761 / CIP 103989 / NBRC
OS 15051 / NCIMB 9469 / D465).
OC Bacteria; Bacteroidetes; Cytophagia; Cytophagales; Cytophagaceae;
OC Cytophaga.
OX NCBI_TaxID=269798;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 33406 / DSM 1761 / CIP 103989 / NBRC 15051 / NCIMB 9469 / D465;
RX PubMed=17400776; DOI=10.1128/aem.00225-07;
RA Xie G., Bruce D.C., Challacombe J.F., Chertkov O., Detter J.C., Gilna P.,
RA Han C.S., Lucas S., Misra M., Myers G.L., Richardson P., Tapia R.,
RA Thayer N., Thompson L.S., Brettin T.S., Henrissat B., Wilson D.B.,
RA McBride M.J.;
RT "Genome sequence of the cellulolytic gliding bacterium Cytophaga
RT hutchinsonii.";
RL Appl. Environ. Microbiol. 73:3536-3546(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; CP000383; ABG58912.1; -; Genomic_DNA.
DR RefSeq; WP_011585028.1; NZ_FPJX01000010.1.
DR AlphaFoldDB; Q11UK3; -.
DR SMR; Q11UK3; -.
DR STRING; 269798.CHU_1643; -.
DR EnsemblBacteria; ABG58912; ABG58912; CHU_1643.
DR KEGG; chu:CHU_1643; -.
DR eggNOG; COG0441; Bacteria.
DR HOGENOM; CLU_008554_0_1_10; -.
DR OMA; FYYDFAY; -.
DR OrthoDB; 900765at2; -.
DR Proteomes; UP000001822; 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..645
FT /note="Threonine--tRNA ligase"
FT /id="PRO_1000020377"
FT DOMAIN 1..61
FT /note="TGS"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01228"
FT REGION 242..541
FT /note="Catalytic"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
FT BINDING 337
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
FT BINDING 388
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
FT BINDING 518
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00184"
SQ SEQUENCE 645 AA; 73543 MW; 5CDB43CB6CAB5C97 CRC64;
MIKITLPDGS IREYEKGITS MGIALSISEG LARNVLAAKV NGEIWDASRA ITSDSTVQLL
TWNDTEGKST FWHSSAHLLA EALEALYPGT KFGIGPAIET GFYYDVDFGD RAFSQDDFEN
IEKKVLELAK QKNAYIRKEI SKKDAVAYFT DKQDPYKLDL LEGLSDGSIT FYKQGAFTDL
CRGPHIPDTG FIKAVKLMSV AGAYWRGDEK SKQLTRIYGV TFPKQQELKD YLTILEEAKK
RDHRKLGKEL ELFAFSEKVG MGLPLWLPKG ALLRERLENF LKKAQVRAGY QPVVTPHIGN
KQLYVTSGHF DKYGKDSFQP IFTPHEGEQF LLKPMNCPHH CEIYKTKPRS YKDLPIRFAE
FGTVYRYEQS GELHGLTRVR GFTQDDAHIF CRPDQVKEEF LKVIDLVLYV FKVLGFNDYT
AQISLRDPEN KDKYIGEDEQ WQKAEQAIIE ASAEKGLSTV TELGEAAFYG PKLDFMVKDA
LGRKWQLGTI QVDYQLPNRF ELEYTGSDNQ KHRPVMLHRA PFGSLERFIA VLIEHVAGNF
PLWLSPDQIA ILPISEKFND YAQDVYDRLL VKDIRGFIDN RDEKIGKKIR DTEVKKVPFM
LVIGEKEVNE GKIAIRKHGG EDLGSMLVED FIQYFESEIA KQLAV
