Ligand profile

Q0K

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

Bound to: VK055_0984 — hypothetical protein

Via homolog PDB 4clx UniProt O76290 Formula C₁₃H₁₂N₄O
Mol. weight 240.27 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
Q0K
PDB
4clx
UniProt (similar protein)
O76290
Target protein
VK055_0984

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 240.27 Da
LogP (Crippen) 1.81
H-bond donors 3
H-bond acceptors 3
TPSA 87.56 Ų
Rotatable bonds 1
Aromatic rings 3 / 3
Heavy atoms 18
Fraction sp³ C 0.08
Formula C₁₃H₁₂N₄O

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 87.6
  • −1 ≤ LogP ≤ 5 1.81
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 240.3
  • LogP ≤ 5 1.81
  • H-bond donors ≤ 5 3
  • H-bond acceptors ≤ 10 3
Veber's rules Pass
  • Rotatable bonds ≤ 10 1
  • TPSA ≤ 140 Ų 87.6
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
Cc1ccc(cc1)c2c[nH]c3c2C(=O)NC(=N3)N
InChI 
InChI=1S/C13H12N4O/c1-7-2-4-8(5-3-7)9-6-15-11-10(9)12(18)17-13(14)16-11/h2-6H,1H3,(H4,14,15,16,17,18)
InChIKey 
ZVGJANRRWBZTJO-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
PF13561

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_0984.

PDB 92

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

Ligand PDB entry

ChEMBL 35

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)