Ligand profile

E4T

Ligand co-crystallized with a similar protein (Protein Data Bank).

Bound to: KP13_05547 — Phosphotriesterase family protein

Via homolog PDB 6frz UniProt P0A434 Formula C₇H₁₄O₄
Mol. weight 162.19 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
E4T
PDB
6frz
UniProt (similar protein)
P0A434
Target protein
KP13_05547

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 162.19 Da
LogP (Crippen) -0.83
H-bond donors 4
H-bond acceptors 4
TPSA 80.92 Ų
Rotatable bonds 0
Aromatic rings 0 / 1
Heavy atoms 11
Fraction sp³ C 1.00
Formula C₇H₁₄O₄

Drug-likeness

Descriptor-based ADME screening flags from SMILES. These are not experimental toxicity results.

Permeability proxy High

Estimated from TPSA and LogP only: TPSA ≤ 90 Ų and −1 ≤ LogP ≤ 5 are treated as a favorable small-molecule permeability screen.

  • TPSA ≤ 90 Ų 80.9
  • −1 ≤ LogP ≤ 5 -0.83
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 162.2
  • LogP ≤ 5 -0.83
  • H-bond donors ≤ 5 4
  • H-bond acceptors ≤ 10 4
Veber's rules Pass
  • Rotatable bonds ≤ 10 0
  • TPSA ≤ 140 Ų 80.9
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
CC1CC(CC(C1)(O)O)(O)O
InChI 
InChI=1S/C7H14O4/c1-5-2-6(8,9)4-7(10,11)3-5/h5,8-11H,2-4H2,1H3
InChIKey 
KRXGBFOGDIQPEG-UHFFFAOYSA-N

Provenance

Annotation context from LigQ_2, the internal Target step that collects PDB, ChEMBL, and ZINC ligand evidence.

Method
LigQ nearest_k
Source
PDB
Binding sites
PF02126

External resources

Open this ligand in third-party databases and cheminformatics tools.

Other ligands for this protein

Quick navigation to other ligands bound to KP13_05547.

PDB 23

Ligands co-crystallized with this protein (structural evidence).

Ligand PDB entry

ZINC 50

Virtual screening candidates selected by structural similarity to known actives (Tanimoto ≥ 0.5).

Compound Similarity (Tanimoto)