Binder profile

CHEMBL5423539

Bioactivity hit from ChEMBL on a similar protein.

Bound to: PA1523 — xanthine dehydrogenase

Via homolog UniProt P47989 C18H17N3O2S
pchembl 8.30
Mol. weight 339.42 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
CHEMBL5423539
UniProt (similar protein)
P47989
pchembl
8.300
Target protein
PA1523

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 339.42 Da
LogP (Crippen) 4.36
H-bond donors 1
H-bond acceptors 5
TPSA 78.91 Ų
Rotatable bonds 4
Aromatic rings 3 / 3
Heavy atoms 24
Fraction sp³ C 0.28
Formula C18H17N3O2S

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.

Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 339.4
  • LogP ≤ 5 4.36
  • H-bond donors ≤ 5 1
  • H-bond acceptors ≤ 10 5
Veber's rules Pass
  • Rotatable bonds ≤ 10 4
  • TPSA ≤ 140 Ų 78.9
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
CCCn1cc(C)c2cc(-c3nc(C)c(C(=O)O)s3)cc(C#N)c21
InChI 
InChI=1S/C18H17N3O2S/c1-4-5-21-9-10(2)14-7-12(6-13(8-19)15(14)21)17-20-11(3)16(24-17)18(22)23/h6-7,9H,4-5H2,1-3H3,(H,22,23)
InChIKey 
MLAYGGHMCXJPNH-UHFFFAOYSA-N

Provenance

Annotation context from LigQ_2, the internal TPW step that collects PDB, ChEMBL, and ZINC ligand evidence.

Method
LigQ nearest_k
Source
ChEMBL
Curation
pdb_similarity_tanimoto
Binding sites
PF01315' 'PF02738' 'PF20256

External resources

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

Other binders for this protein

Quick navigation to other ligands bound to PA1523.

PDB 20

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

Ligand PDB entry

ChEMBL 99

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)