Ligand profile

N4R

Bioactivity hit from ChEMBL on a similar protein.

Bound to: KP13_03495 — Histone deacetylase superfamily protein

Via homolog UniProt Q9Z2V5 Formula C₁₉H₂₃N₃O₃
Mol. weight 341.41 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
N4R
UniProt (similar protein)
Q9Z2V5
Target protein
KP13_03495

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 341.41 Da
LogP (Crippen) 3.64
H-bond donors 3
H-bond acceptors 3
TPSA 81.67 Ų
Rotatable bonds 7
Aromatic rings 2 / 2
Heavy atoms 25
Fraction sp³ C 0.26
Formula C₁₉H₂₃N₃O₃

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 81.7
  • −1 ≤ LogP ≤ 5 3.64
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 341.4
  • LogP ≤ 5 3.64
  • H-bond donors ≤ 5 3
  • H-bond acceptors ≤ 10 3
Veber's rules Pass
  • Rotatable bonds ≤ 10 7
  • TPSA ≤ 140 Ų 81.7
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
CCCCN(Cc1ccc(cc1)C(=O)NO)C(=O)Nc2ccccc2
InChI 
InChI=1S/C19H23N3O3/c1-2-3-13-22(19(24)20-17-7-5-4-6-8-17)14-15-9-11-16(12-10-15)18(23)21-25/h4-12,25H,2-3,13-14H2,1H3,(H,20,24)(H,21,23)
InChIKey 
JZWXMCPARMXZQV-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
ChEMBL
Activity
Active
Curation
pdb_similarity_tanimoto
Binding sites
PF00850

External resources

Open this ligand in third-party databases and cheminformatics tools.

Other ligands for this protein

Quick navigation to other ligands bound to KP13_03495.

PDB 46

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

Ligand PDB entry

ChEMBL 54

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)