Ligand profile

E24

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

Bound to: KP13_00513 — Fumarate reductase iron-sulfur subunit

Via homolog PDB 4ysy UniProt O44074 Formula C₁₅H₁₀Cl₂F₃NO
Mol. weight 348.15 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
E24
PDB
4ysy
UniProt (similar protein)
O44074
Target protein
KP13_00513

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 348.15 Da
LogP (Crippen) 4.94
H-bond donors 1
H-bond acceptors 1
TPSA 29.10 Ų
Rotatable bonds 3
Aromatic rings 2 / 2
Heavy atoms 22
Fraction sp³ C 0.13
Formula C₁₅H₁₀Cl₂F₃NO

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 29.1
  • −1 ≤ LogP ≤ 5 4.94
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 348.2
  • LogP ≤ 5 4.94
  • H-bond donors ≤ 5 1
  • H-bond acceptors ≤ 10 1
Veber's rules Pass
  • Rotatable bonds ≤ 10 3
  • TPSA ≤ 140 Ų 29.1
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
c1ccc(c(c1)C(=O)NCc2ccc(cc2Cl)Cl)C(F)(F)F
InChI 
InChI=1S/C15H10Cl2F3NO/c16-10-6-5-9(13(17)7-10)8-21-14(22)11-3-1-2-4-12(11)15(18,19)20/h1-7H,8H2,(H,21,22)
InChIKey 
JPTXMUZNWHRWNU-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
PF01127' 'PF05328' 'PF13534

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_00513.

PDB 46

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

Ligand PDB entry

ZINC 50

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

Compound Similarity (Tanimoto)