Ligand profile

BJ4

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

Bound to: VK055_3566 — ankyrin repeat family protein

Via homolog PDB 4ui5 UniProt Q9H2K2 Formula C₁₆H₁₄N₂O₂
Mol. weight 266.30 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
BJ4
PDB
4ui5
UniProt (similar protein)
Q9H2K2
Target protein
VK055_3566

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 266.30 Da
LogP (Crippen) 2.91
H-bond donors 1
H-bond acceptors 3
TPSA 54.98 Ų
Rotatable bonds 2
Aromatic rings 3 / 3
Heavy atoms 20
Fraction sp³ C 0.12
Formula C₁₆H₁₄N₂O₂

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 55.0
  • −1 ≤ LogP ≤ 5 2.91
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 266.3
  • LogP ≤ 5 2.91
  • H-bond donors ≤ 5 1
  • H-bond acceptors ≤ 10 3
Veber's rules Pass
  • Rotatable bonds ≤ 10 2
  • TPSA ≤ 140 Ų 55.0
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
Cc1ccc(cc1)C2=Nc3c(cccc3OC)C(=O)N2
InChI 
InChI=1S/C16H14N2O2/c1-10-6-8-11(9-7-10)15-17-14-12(16(19)18-15)4-3-5-13(14)20-2/h3-9H,1-2H3,(H,17,18,19)
InChIKey 
JKCKQJATUNERKN-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
PF00644

External resources

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

Other ligands for this protein

Quick navigation to other ligands bound to VK055_3566.

PDB 124

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)