PDB Entry (2xu5)
PDB ID: 2xu5 Resolution: 1.6 Å Exp. Method: X-RAY DIFFRACTION
PMID: 21184410 DOI: 10.1002/ANIE.201006781
Protein
Protein Name: Procathepsin L
Uniprot ID/ACC: P07711 (CATL1_HUMAN) Organism: Homo sapiens (Human)
Gene Symbol: CTSL Gene ID: 1514
Protein Class: HYDROLASE
Ligand
Ligand Name:   (2S,4R)-4-(2-chlorobenzenesulfonyl)-N-(1-cyanocyclopropyl)-1-[1-(4-methylphenyl)cyclopropanecarbonyl]pyrrolidine-2-carboxamide
Canonical SMILES:   Cc1ccc(cc1)C2(CC2)C(=O)N3C[C@@H](C[C@H]3C(=O)NC4(C#N)CC4)S(=O)(=O)c5ccccc5Cl
Standard InChI:   InChI=1S/C26H26ClN3O4S/c1-17-6-8-18(9-7-17)26(12-13-26)24(32)30-15-19(35(33,34)22-5-3-2-4-20(22)27)14-21(30)23(31)29-25(16-28)10-11-25/h2-9,19,21H,10-15H2,1H3,(H,29,31)/t19-,21+/m1/s1
HET Code:   XU5 PubChem:   51033210
DrugBank:   - ChEMBL:   -
Molecular Formula:   C26H26ClN3O4S Mol. Weight:   511.13324 logP:   3.2958
HBD:   1 HBA:   5
#Rotatable Bonds:   6 TPSA:   107.34
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Nucleophilic Addition to a Triple Bond CYS 25 A 17.52 13.18 Nitrile
Binding Affinity
Database Name Value
PDBBind IC50 : 130 nM