Ligand profile

LEW

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

Bound to: KP13_00667 — Glycogen phosphorylase

Via homolog PDB 3g2l UniProt P00489 Formula C₁₈H₁₉N₃O₅
Mol. weight 357.37 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
LEW
PDB
3g2l
UniProt (similar protein)
P00489
Target protein
KP13_00667

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 357.37 Da
LogP (Crippen) 0.07
H-bond donors 4
H-bond acceptors 8
TPSA 120.86 Ų
Rotatable bonds 3
Aromatic rings 3 / 4
Heavy atoms 26
Fraction sp³ C 0.33
Formula C₁₈H₁₉N₃O₅

Drug-likeness

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

Permeability proxy Check

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 120.9
  • −1 ≤ LogP ≤ 5 0.07
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 357.4
  • LogP ≤ 5 0.07
  • H-bond donors ≤ 5 4
  • H-bond acceptors ≤ 10 8
Veber's rules Pass
  • Rotatable bonds ≤ 10 3
  • TPSA ≤ 140 Ų 120.9
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
c1ccc2c(c1)cccc2c3cn(nn3)[C@H]4[C@@H]([C@H]([C@@H]([C@H](O4)CO)O)O)O
InChI 
InChI=1S/C18H19N3O5/c22-9-14-15(23)16(24)17(25)18(26-14)21-8-13(19-20-21)12-7-3-5-10-4-1-2-6-11(10)12/h1-8,14-18,22-25H,9H2/t14-,15-,16+,17-,18-/m1/s1
InChIKey 
ZQSWMZLNZOWSSB-UYTYNIKBSA-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
PF00343

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_00667.

PDB 115

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

Ligand PDB entry

ChEMBL 100

Compounds with measured inhibitory activity on this target (higher pchembl = more potent).

Compound Potency (pchembl)

ZINC 50

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

Compound Similarity (Tanimoto)