Ligand profile

ZINC1682664

Virtual-screening candidate from ZINC.

Bound to: KP13_04441 — Protocatechuate 3,4-dioxygenase alpha chain

Via homolog UniProt P00436 Formula C₁₆H₁₄O₄
Tanimoto 0.68
Mol. weight 270.28 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
ZINC1682664
UniProt (similar protein)
P00436
Tanimoto
0.682
Target protein
KP13_04441

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 270.28 Da
LogP (Crippen) 2.61
H-bond donors 2
H-bond acceptors 2
TPSA 74.60 Ų
Rotatable bonds 5
Aromatic rings 2 / 2
Heavy atoms 20
Fraction sp³ C 0.12
Formula C₁₆H₁₄O₄

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 74.6
  • −1 ≤ LogP ≤ 5 2.61
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 270.3
  • LogP ≤ 5 2.61
  • H-bond donors ≤ 5 2
  • H-bond acceptors ≤ 10 2
Veber's rules Pass
  • Rotatable bonds ≤ 10 5
  • TPSA ≤ 140 Ų 74.6
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
O=C(O)Cc1ccc(-c2ccc(CC(=O)O)cc2)cc1
InChI 
InChI=1S/C16H14O4/c17-15(18)9-11-1-5-13(6-2-11)14-7-3-12(4-8-14)10-16(19)20/h1-8H,9-10H2,(H,17,18)(H,19,20)
InChIKey 
CXLNWJSKZPSWPR-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
4HP
Homolog
P00436

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_04441.

PDB 18

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)