Ligand profile

EA4

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

Bound to: KP13_00717 — Peptidyl-prolyl cis-trans isomerase A

Via homolog PDB 3rdd UniProt P62937 Formula C₁₂H₁₇N₃O₃
Mol. weight 251.29 Da
Permeability Check
PAINS Alert

Identifiers

Database identifiers and provenance.

Ligand ID
EA4
PDB
3rdd
UniProt (similar protein)
P62937
Target protein
KP13_00717

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 251.29 Da
LogP (Crippen) 0.63
H-bond donors 3
H-bond acceptors 4
TPSA 93.45 Ų
Rotatable bonds 5
Aromatic rings 1 / 1
Heavy atoms 18
Fraction sp³ C 0.33
Formula C₁₂H₁₇N₃O₃

Drug-likeness

Descriptor-based ADME screening flags from SMILES. These are not experimental toxicity results.

Permeability proxy Check

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 93.4
  • −1 ≤ LogP ≤ 5 0.63
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 251.3
  • LogP ≤ 5 0.63
  • H-bond donors ≤ 5 3
  • H-bond acceptors ≤ 10 4
Veber's rules Pass
  • Rotatable bonds ≤ 10 5
  • TPSA ≤ 140 Ų 93.4
PAINS Alert

Matches PAINS filter: anil_no_alk(40). May be a frequent false positive in HTS — review carefully.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
CCOC(=O)CNC(=O)NCc1ccc(cc1)N
InChI 
InChI=1S/C12H17N3O3/c1-2-18-11(16)8-15-12(17)14-7-9-3-5-10(13)6-4-9/h3-6H,2,7-8,13H2,1H3,(H2,14,15,17)
InChIKey 
UCMPTJMHPJQEED-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
PF00160

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_00717.

PDB 39

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

Ligand PDB entry

ChEMBL 100

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)