PDB Entry (4an0)
PDB ID: 4an0 Resolution: 2.2 Å Exp. Method: X-RAY DIFFRACTION
PMID: 22484394 DOI: 10.1016/j.biochi.2012.03.012
Protein
Protein Name: Prolyl endopeptidase
Uniprot ID/ACC: P23687 (PPCE_PIG) Organism: Sus scrofa (Pig)
Gene Symbol: PREP Gene ID: 445540
Protein Class: HYDROLASE
Ligand
Ligand Name:   IC-3
Canonical SMILES:   c1ccccc1CCCC(=O)N2CCC[C@H]2C(=O)N3CCC[C@H]3C#N
Standard InChI:   InChI=1S/C20H25N3O2/c21-15-17-10-5-13-22(17)20(25)18-11-6-14-23(18)19(24)12-4-9-16-7-2-1-3-8-16/h1-3,7-8,17-18H,4-6,9-14H2/t17-,18-/m0/s1
HET Code:   2P6 PubChem:   11198569
DrugBank:   - ChEMBL:   CHEMBL189620
Molecular Formula:   C20H25N3O2 Mol. Weight:   339.19467 logP:   2.51488
HBD:   0 HBA:   3
#Rotatable Bonds:   5 TPSA:   64.41
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Nucleophilic Addition to a Triple Bond SER 554 A 20.7 - Nitrile
Binding Affinity
Database Name Value
PDBBind Ki : 0.02 nM
BindingDB Ki : 0.02 nM , Ki : 0.92 nM , Ki : 0.95 nM , Ki : 0.1 nM , IC50 : 6 nM , IC50 : 0.2 nM , IC50 : 0.22 nM