Ligand profile

ZINC2555760

Virtual-screening candidate from ZINC.

Bound to: VK055_1987 — oxygen-insensitive NAD(P)H nitroreductase

Via homolog UniProt Q01234 Formula C₁₄H₉NO₄
Tanimoto 0.69
Mol. weight 255.23 Da
Permeability High
PAINS Alert

Identifiers

Database identifiers and provenance.

Ligand ID
ZINC2555760
UniProt (similar protein)
Q01234
Tanimoto
0.692
Target protein
VK055_1987

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 255.23 Da
LogP (Crippen) 2.66
H-bond donors 0
H-bond acceptors 4
TPSA 77.28 Ų
Rotatable bonds 4
Aromatic rings 2 / 2
Heavy atoms 19
Fraction sp³ C 0.00
Formula C₁₄H₉NO₄

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 77.3
  • −1 ≤ LogP ≤ 5 2.66
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 255.2
  • LogP ≤ 5 2.66
  • H-bond donors ≤ 5 0
  • H-bond acceptors ≤ 10 4
Veber's rules Pass
  • Rotatable bonds ≤ 10 4
  • TPSA ≤ 140 Ų 77.3
PAINS Alert

Matches PAINS filter: imine_one_A(321). May be a frequent false positive in HTS — review carefully.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
O=C(C(=O)c1ccc([N+](=O)[O-])cc1)c1ccccc1
InChI 
InChI=1S/C14H9NO4/c16-13(10-4-2-1-3-5-10)14(17)11-6-8-12(9-7-11)15(18)19/h1-9H
InChIKey 
GPDKREBNFFEDHW-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
4NB
Homolog
Q01234

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_1987.

PDB 15

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)