Protein profile

PA2744

threonine--tRNA ligase

Genome: NC_002516.2

Gene: thrS PA2744 Structure source: AlphaFold UniProt Q9I099
Amino acids 640
Annotations 12
Features 54
PDB binders 8
Druggability 0.445

Overview

Basic information about this protein and its source genome.

Accession
PA2744
Gene
thrS PA2744
Status
annotated
Amino acids
640
Structure source
AlphaFold

Target profile

Computed evidence for target prioritization.

Human off-target
hit
Human identity (%)
40.822
Human E-value
1.64e-84
Gut microbiome off-target
hit
Essential (DEG)
Y
Localization
Cytoplasmic

Selected Druggability evidence

Selected Druggability is the FPocket score chosen for ranking using the curated structure priority. The 3D viewer may show a different loaded structure, so its visible pockets can differ.

FPocket 0.445
Structure
Pocket

Sequence

Primary amino-acid sequence viewer.

Functional Annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 11 GO

Enzyme Commission (EC)

1

Gene Ontology (GO)

11
  • GO:0005829 The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
  • GO:0005524 Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
  • GO:0046872 Binding to a metal ion.
  • GO:0004829 Catalysis of the reaction: ATP + L-threonine + tRNA(Thr) = AMP + diphosphate + L-threonyl-tRNA(Thr).
  • GO:0000049 Binding to a transfer RNA.
  • GO:0006435 The process of coupling threonine to threonyl-tRNA, catalyzed by threonyl-tRNA synthetase. The threonyl-tRNA synthetase is a class-II synthetase. The activated amino acid is transferred to the 3'-OH group of a threonine-accetping tRNA.
  • GO:0005737 The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
  • GO:0000166 Binding to a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
  • GO:0004812 Catalysis of the formation of aminoacyl-tRNA from ATP, amino acid, and tRNA with the release of diphosphate and AMP.
  • GO:0006418 The synthesis of aminoacyl tRNA by the formation of an ester bond between the 3'-hydroxyl group of the most 3' adenosine of the tRNA and the alpha carboxylic acid group of an amino acid, to be used in ribosome-mediated polypeptide synthesis.
  • GO:0043039 The chemical reactions and pathways by which the various amino acids become bonded to their corresponding tRNAs. The most common route for synthesis of aminoacyl tRNA is by the formation of an ester bond between the 3'-hydroxyl group of the most 3' adenosine of the tRNA and the alpha carboxylic acid group of an amino acid, usually catalyzed by the cognate aminoacyl-tRNA ligase. A given aminoacyl-tRNA ligase aminoacylates all species of an isoaccepting group of tRNA molecules.

Sequence Features

Domain/signature hits from InterPro and related databases.

54 records
Show feature table
Start End DB Term Name
169 218 SMART SM00863 tRNA_SAD_4
169 218 InterPro IPR012947 Threonyl/alanyl tRNA synthetase, SAD
130 186 Gene3D G3DSA:3.30.54.20 -
4 633 PANTHER PTHR11451 THREONINE-TRNA LIGASE
528 632 SUPERFAMILY SSF52954 Class II aaRS ABD-related
242 538 CDD cd00771 ThrRS_core
242 538 InterPro IPR033728 Threonine-tRNA ligase catalytic core domain
68 221 Gene3D G3DSA:3.30.980.10 -
1 64 Gene3D G3DSA:3.10.20.30 -
1 64 InterPro IPR012675 Beta-grasp domain superfamily
540 628 Pfam PF03129 Anticodon binding domain
540 628 InterPro IPR004154 Anticodon-binding
531 639 Gene3D G3DSA:3.40.50.800 -
531 639 InterPro IPR036621 Anticodon-binding domain superfamily
1 61 ProSiteProfiles PS51880 TGS domain profile.
1 61 InterPro IPR004095 TGS
242 533 ProSiteProfiles PS50862 Aminoacyl-transfer RNA synthetases class-II family profile.
242 533 InterPro IPR006195 Aminoacyl-tRNA synthetase, class II
72 629 NCBIfam TIGR00418 threonine--tRNA ligase
72 629 InterPro IPR002320 Threonine-tRNA ligase, class IIa
224 531 FunFam G3DSA:3.30.930.10:FF:000002 Threonine--tRNA ligase
1 64 FunFam G3DSA:3.10.20.30:FF:000005 Threonine--tRNA ligase
328 356 PRINTS PR01047 Threonyl-tRNA synthetase signature
328 356 InterPro IPR002320 Threonine-tRNA ligase, class IIa
506 519 PRINTS PR01047 Threonyl-tRNA synthetase signature
506 519 InterPro IPR002320 Threonine-tRNA ligase, class IIa
463 491 PRINTS PR01047 Threonyl-tRNA synthetase signature
463 491 InterPro IPR002320 Threonine-tRNA ligase, class IIa
361 384 PRINTS PR01047 Threonyl-tRNA synthetase signature
361 384 InterPro IPR002320 Threonine-tRNA ligase, class IIa
533 545 PRINTS PR01047 Threonyl-tRNA synthetase signature
533 545 InterPro IPR002320 Threonine-tRNA ligase, class IIa
4 61 Pfam PF02824 TGS domain
4 61 InterPro IPR004095 TGS
3 61 SUPERFAMILY SSF81271 TGS-like
3 61 InterPro IPR012676 TGS-like
65 222 FunFam G3DSA:3.30.980.10:FF:000005 Threonyl-tRNA synthetase, mitochondrial
538 627 CDD cd00860 ThrRS_anticodon
538 627 InterPro IPR047246 Threonine-tRNA ligase, class IIa, anticodon-binding domain
63 240 SUPERFAMILY SSF55186 ThrRS/AlaRS common domain
63 240 InterPro IPR018163 Threonyl/alanyl tRNA synthetase, class II-like, putative editing domain superfamily
171 218 Pfam PF07973 Threonyl and Alanyl tRNA synthetase second additional domain
171 218 InterPro IPR012947 Threonyl/alanyl tRNA synthetase, SAD
242 525 SUPERFAMILY SSF55681 Class II aaRS and biotin synthetases
242 525 InterPro IPR045864 Class II Aminoacyl-tRNA synthetase/Biotinyl protein ligase (BPL) and lipoyl protein ligase (LPL)
531 637 FunFam G3DSA:3.40.50.800:FF:000001 Threonine--tRNA ligase
2 66 CDD cd01667 TGS_ThrRS
320 528 Pfam PF00587 tRNA synthetase class II core domain (G, H, P, S and T)
320 528 InterPro IPR002314 Aminoacyl-tRNA synthetase, class II (G/ P/ S/T)
222 530 Gene3D G3DSA:3.30.930.10 Bira Bifunctional Protein; Domain 2
222 530 InterPro IPR045864 Class II Aminoacyl-tRNA synthetase/Biotinyl protein ligase (BPL) and lipoyl protein ligase (LPL)
66 633 Hamap MF_00184 Threonine--tRNA ligase [thrS].
66 633 InterPro IPR002320 Threonine-tRNA ligase, class IIa
130 186 FunFam G3DSA:3.30.54.20:FF:000002 Threonine--tRNA ligase

3D Structure

Selected loaded structure. Experimental PDB entries may cover only a portion of the sequence; predicted models typically cover the full protein.

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Structural evidence

0 + 1

Experimental PDB entries and predicted models. Click Switch to display a different structure in the viewer.

Entry Method Resolution Chain Coverage Links Status
AlphaFold PA2744
AlphaFold full sequence Viewing
Pocket details FPocket · P2Rank — toggle visibility and zoom from here, or open full viewer

Pockets (FPOCKET)

Showing top-ranked FPocket candidates by druggability. Druggability is color-coded: high (0.7 or higher), medium (0.4 to 0.69), low (below 0.4).

FPOCKET Sticks Spheres Surfaces Druggability Labels Zoom Positions
3 0.445
2 0.35

Ligand evidence

Ligands grouped by evidence source. PDB ligands keep the source crystal visible, and loaded crystals can be opened directly in the structure viewer.

84 records

Structural evidence inferred from similar proteins. The source crystal indicates where the ligand was observed; the UniProt column identifies the homologous protein carrying that ligand.

Show only:
Ligand Source crystal UniProt (homolog) MW · LogP · TPSA Lipinski PAINS SMILES
2CR P0A8M3 489.7 Da LogP 4.64 TPSA 127.9 ✓ Ro5 ✓ Clean CC1CC(CC(C(C(=CC=CCC(OC(=O)CC(C(C1)C)O)C2CCCC2C…
A3S P0A8M3 353.3 Da LogP -3.54 TPSA 194.7 2 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
E4O V7II86 385.3 Da LogP 1.08 TPSA 110.2 ✓ Ro5 ✓ Clean C[C@H]([C@@H](C(=O)NC/C=C/CN1C=Nc2cc(c(cc2C1=O)…
FQL V7II86 399.3 Da LogP 1.34 TPSA 96.2 ✓ Ro5 ✓ Clean C[C@H]([C@@H](C(=O)NC/C=C/CN1C=Nc2cc(c(cc2C1=O)…
FQR V7II86 430.7 Da LogP 1.62 TPSA 107.4 ✓ Ro5 ✓ Clean C[C@H]([C@@H](C(=O)OC/C=C/CN1C=Nc2cc(c(cc2C1=O)…
FQU V7II86 446.7 Da LogP 2.23 TPSA 107.4 ✓ Ro5 ✓ Clean C[C@H]([C@@H](C(=O)OCCCCCN1C=Nc2cc(c(cc2C1=O)Cl…
SSA P0A8M3 433.4 Da LogP -4.28 TPSA 238.0 2 viol. ✓ Clean c1nc(c2c(n1)n(cn2)[C@H]3[C@@H]([C@@H]([C@H](O3)…
TSB P0A8M3 447.4 Da LogP -3.89 TPSA 238.0 2 viol. ✓ Clean C[C@H]([C@@H](C(=O)NS(=O)(=O)OC[C@@H]1[C@H]([C@…

PDB and ChEMBL records on this protein are shown in full. ChEMBL records from similar proteins are capped at the top 100 per protein (by pchembl) and ZINC at the top 50 (Tanimoto ≥ 0.5). ADME columns are descriptor-based screening flags, not experimental toxicity results.