Ligand profile

ZINC2748110

Virtual-screening candidate from ZINC.

Bound to: VK055_4603 — RNA polymerase sigma factor RpoE

Via homolog UniProt Q06198 Formula C₁₈H₁₄N₄O₂
Tanimoto 0.53
Mol. weight 318.34 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
ZINC2748110
UniProt (similar protein)
Q06198
Tanimoto
0.531
Target protein
VK055_4603

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 318.34 Da
LogP (Crippen) 2.98
H-bond donors 2
H-bond acceptors 4
TPSA 83.98 Ų
Rotatable bonds 4
Aromatic rings 3 / 3
Heavy atoms 24
Fraction sp³ C 0.00
Formula C₁₈H₁₄N₄O₂

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 84.0
  • −1 ≤ LogP ≤ 5 2.98
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 318.3
  • LogP ≤ 5 2.98
  • H-bond donors ≤ 5 2
  • H-bond acceptors ≤ 10 4
Veber's rules Pass
  • Rotatable bonds ≤ 10 4
  • TPSA ≤ 140 Ų 84.0
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
O=C(Nc1ccccc1NC(=O)c1cccnc1)c1cccnc1
InChI 
InChI=1S/C18H14N4O2/c23-17(13-5-3-9-19-11-13)21-15-7-1-2-8-16(15)22-18(24)14-6-4-10-20-12-14/h1-12H,(H,21,23)(H,22,24)
InChIKey 
IQFQBEILRFGGPW-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
NCA
Homolog
Q06198

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_4603.

PDB 1

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

Ligand PDB entry

ZINC 49

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

Compound Similarity (Tanimoto)