Ligand profile

ZINC4466315

Virtual-screening candidate from ZINC.

Bound to: KP13_03545 — Cysteine synthase B

Via homolog UniProt P9WP55 Formula C₁₉H₁₆N₂O₂S
Tanimoto 0.79
Mol. weight 336.42 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
ZINC4466315
UniProt (similar protein)
P9WP55
Tanimoto
0.792
Target protein
KP13_03545

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 336.42 Da
LogP (Crippen) 4.18
H-bond donors 1
H-bond acceptors 4
TPSA 52.90 Ų
Rotatable bonds 4
Aromatic rings 2 / 3
Heavy atoms 24
Fraction sp³ C 0.05
Formula C₁₉H₁₆N₂O₂S

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 52.9
  • −1 ≤ LogP ≤ 5 4.18
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 336.4
  • LogP ≤ 5 4.18
  • H-bond donors ≤ 5 1
  • H-bond acceptors ≤ 10 4
Veber's rules Pass
  • Rotatable bonds ≤ 10 4
  • TPSA ≤ 140 Ų 52.9
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
C=CCN1C(=O)/C(=C\c2ccc(O)cc2)S/C1=N/c1ccccc1
InChI 
InChI=1S/C19H16N2O2S/c1-2-12-21-18(23)17(13-14-8-10-16(22)11-9-14)24-19(21)20-15-6-4-3-5-7-15/h2-11,13,22H,1,12H2/b17-13+,20-19+
InChIKey 
RSNJMOWLEPNASJ-SXXHPKIYSA-N

Provenance

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

Method
LigQ nearest_k
Query
CHEMBL2418548
Homolog
P9WP55

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_03545.

PDB 8

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

Ligand PDB entry

ChEMBL 15

Compounds with measured inhibitory activity on this target (higher pchembl = more potent).

Compound Potency (pchembl)

ZINC 49

Virtual screening candidates selected by structural similarity to known actives (Tanimoto ≥ 0.5).

Compound Similarity (Tanimoto)