PDB Entry (1yk7)
PDB ID: 1yk7 Resolution: 2.5 Å Exp. Method: X-RAY DIFFRACTION
PMID: 15780613 DOI: 10.1016/j.bmcl.2005.02.033
Protein
Protein Name: Cathepsin K
Uniprot ID/ACC: P43235 (CATK_HUMAN) Organism: Homo sapiens (Human)
Gene Symbol: CTSK Gene ID: 1513
Protein Class: HYDROLASE
Ligand
Ligand Name:   N2-[(BENZYLOXY)CARBONYL]-N1-[(3S)-1-CYANOPYRROLIDIN-3-YL]-L-LEUCINAMIDE
Canonical SMILES:   N#CN1C[C@@H](CC1)NC(=O)[C@H](CC(C)C)NC(=O)OCc2ccccc2
Standard InChI:   InChI=1S/C19H26N4O3/c1-14(2)10-17(18(24)21-16-8-9-23(11-16)13-20)22-19(25)26-12-15-6-4-3-5-7-15/h3-7,14,16-17H,8-12H2,1-2H3,(H,21,24)(H,22,25)/t16-,17+/m1/s1
HET Code:   NBL PubChem:   5288988
DrugBank:   DB03456 ChEMBL:   CHEMBL1234636
Molecular Formula:   C19H26N4O3 Mol. Weight:   358.2005 logP:   1.99908
HBD:   2 HBA:   5
#Rotatable Bonds:   7 TPSA:   94.46
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Nucleophilic Addition to a Triple Bond CYS 25 A 16.95 11.94 Cyanamide
Binding Affinity
Database Name Value
PDBBind IC50 : 19 nM