Ligand profile

ZINC15659835

Virtual-screening candidate from ZINC.

Bound to: VK055_1258 — pyrazinamidase / nicotinamidase

Via homolog UniProt A4HRG8 Formula C₁₆H₁₆N₄O₂
Tanimoto 0.56
Mol. weight 296.33 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
ZINC15659835
UniProt (similar protein)
A4HRG8
Tanimoto
0.562
Target protein
VK055_1258

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 296.33 Da
LogP (Crippen) 1.07
H-bond donors 0
H-bond acceptors 4
TPSA 66.40 Ų
Rotatable bonds 2
Aromatic rings 2 / 3
Heavy atoms 22
Fraction sp³ C 0.25
Formula C₁₆H₁₆N₄O₂

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 66.4
  • −1 ≤ LogP ≤ 5 1.07
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 296.3
  • LogP ≤ 5 1.07
  • H-bond donors ≤ 5 0
  • H-bond acceptors ≤ 10 4
Veber's rules Pass
  • Rotatable bonds ≤ 10 2
  • TPSA ≤ 140 Ų 66.4
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
O=C(c1ccncc1)N1CCN(C(=O)c2cccnc2)CC1
InChI 
InChI=1S/C16H16N4O2/c21-15(13-3-6-17-7-4-13)19-8-10-20(11-9-19)16(22)14-2-1-5-18-12-14/h1-7,12H,8-11H2
InChIKey 
YWQMLTLITORGOU-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
NIO
Homolog
A4HRG8

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_1258.

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)