Ligand profile

ZINC28539779

Virtual-screening candidate from ZINC.

Bound to: VK055_2464 — guanosine monophosphate reductase

Via homolog UniProt Q0P9J4 Formula C₂₁H₁₈N₄O
Tanimoto 0.76
Mol. weight 342.40 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
ZINC28539779
UniProt (similar protein)
Q0P9J4
Tanimoto
0.759
Target protein
VK055_2464

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 342.40 Da
LogP (Crippen) 4.05
H-bond donors 1
H-bond acceptors 4
TPSA 59.81 Ų
Rotatable bonds 4
Aromatic rings 4 / 4
Heavy atoms 26
Fraction sp³ C 0.10
Formula C₂₁H₁₈N₄O

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 59.8
  • −1 ≤ LogP ≤ 5 4.05
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 342.4
  • LogP ≤ 5 4.05
  • H-bond donors ≤ 5 1
  • H-bond acceptors ≤ 10 4
Veber's rules Pass
  • Rotatable bonds ≤ 10 4
  • TPSA ≤ 140 Ų 59.8
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
Cc1cccc(NC(=O)Cn2c(-c3ccccn3)nc3ccccc32)c1
InChI 
InChI=1S/C21H18N4O/c1-15-7-6-8-16(13-15)23-20(26)14-25-19-11-3-2-9-17(19)24-21(25)18-10-4-5-12-22-18/h2-13H,14H2,1H3,(H,23,26)
InChIKey 
VKDPNGAHVGQDHS-UHFFFAOYSA-N

Provenance

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

Method
LigQ nearest_k
Query
C91
Homolog
Q0P9J4

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_2464.

PDB 13

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

Ligand PDB entry

ChEMBL 16

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

Compound Potency (pchembl)

ZINC 49

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

Compound Similarity (Tanimoto)