PDB Entry (4bcb)
PDB ID: 4bcb Resolution: 1.7 Å Exp. Method: X-RAY DIFFRACTION
PMID: 23121075 DOI: 10.1021/JM301060G
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:   1-[(3S,5S)-5-[(2S)-2-cyanopyrrolidine-1-carbonyl]-1-(4-phenylbutanoyl)pyrrolidin-3-yl]triaza-1,2-dien-2-ium
Canonical SMILES:   [N-]=[N+]=N[C@H]1C[C@H](N(C1)C(=O)CCCc1ccccc1)C(=O)N1CCC[C@H]1C#N
Standard InChI:   InChI=1S/C20H24N6O2/c21-13-17-9-5-11-25(17)20(28)18-12-16(23-24-22)14-26(18)19(27)10-4-8-15-6-2-1-3-7-15/h1-3,6-7,16-18H,4-5,8-12,14H2/t16-,17-,18-/m0/s1
HET Code:   4I4 PubChem:   71462596
DrugBank:   - ChEMBL:   CHEMBL2178958
Molecular Formula:   C20H24N6O2 Mol. Weight:   380.19608 logP:   2.80368
HBD:   0 HBA:   4
#Rotatable Bonds:   6 TPSA:   113.17
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Nucleophilic Addition to a Triple Bond SER 554 A 20.71 - Nitrile
Binding Affinity
Database Name Value
PDBBind IC50 : 3 nM