PDB Entry (2xu4)
PDB ID: 2xu4 Resolution: 1.12 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)-N-(1-cyanocyclopropyl)-1-[1-(4-fluorophenyl)cyclopropanecarbonyl]-4-(2-methylbenzenesulfonyl)pyrrolidine-2-carboxamide
Canonical SMILES:   Cc1ccccc1S(=O)(=O)[C@@H]2C[C@@H](C(=O)NC3(C#N)CC3)N(C2)C(=O)C4(CC4)c5ccc(F)cc5
Standard InChI:   InChI=1S/C26H26FN3O4S/c1-17-4-2-3-5-22(17)35(33,34)20-14-21(23(31)29-25(16-28)10-11-25)30(15-20)24(32)26(12-13-26)18-6-8-19(27)9-7-18/h2-9,20-21H,10-15H2,1H3,(H,29,31)/t20-,21+/m1/s1
HET Code:   DJT PubChem:   -
DrugBank:   - ChEMBL:   -
Molecular Formula:   C26H26FN3O4S Mol. Weight:   495.1628 logP:   2.7815
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 18.77 12.93 Nitrile
Binding Affinity
Database Name Value
PDBBind IC50 : 340 nM