Ligand profile

W45

Ligand co-crystallized with a similar protein (Protein Data Bank).

Bound to: KP13_03495 — Histone deacetylase superfamily protein

Via homolog PDB 6mr5 UniProt F8W4B7 Formula C₁₅H₁₈Cl₂N₂OS
Mol. weight 345.29 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
W45
PDB
6mr5
UniProt (similar protein)
F8W4B7
Target protein
KP13_03495

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 345.29 Da
LogP (Crippen) 4.16
H-bond donors 2
H-bond acceptors 3
TPSA 34.03 Ų
Rotatable bonds 7
Aromatic rings 2 / 2
Heavy atoms 21
Fraction sp³ C 0.40
Formula C₁₅H₁₈Cl₂N₂OS

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 34.0
  • −1 ≤ LogP ≤ 5 4.16
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 345.3
  • LogP ≤ 5 4.16
  • H-bond donors ≤ 5 2
  • H-bond acceptors ≤ 10 3
Veber's rules Pass
  • Rotatable bonds ≤ 10 7
  • TPSA ≤ 140 Ų 34.0
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
c1cn(c2c1cc(c(c2)Cl)Cl)CCCCCNC(=O)CS
InChI 
InChI=1S/C15H18Cl2N2OS/c16-12-8-11-4-7-19(14(11)9-13(12)17)6-3-1-2-5-18-15(20)10-21/h4,7-9,21H,1-3,5-6,10H2,(H,18,20)
InChIKey 
MHKHGVSRGWQPII-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
PDB
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 45

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

Ligand PDB entry

ChEMBL 55

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)