PDB Entry (1ayu)
PDB ID: 1ayu Resolution: 2.2 Å Exp. Method: X-RAY DIFFRACTION
PMID: 9405598 DOI: 10.1073/pnas.94.26.14249
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:   1,5-BIS(N-BENZYLOXYCARBONYL-L-LEUCINYL)CARBOHYDRAZIDE
Canonical SMILES:   c1ccccc1COC(=O)N[C@@H](CC(C)C)C(=O)NNC(=O)NNC(=O)[C@H](CC(C)C)NC(=O)OCc2ccccc2
Standard InChI:   InChI=1S/C29H40N6O7/c1-19(2)15-23(30-28(39)41-17-21-11-7-5-8-12-21)25(36)32-34-27(38)35-33-26(37)24(16-20(3)4)31-29(40)42-18-22-13-9-6-10-14-22/h5-14,19-20,23-24H,15-18H2,1-4H3,(H,30,39)(H,31,40)(H,32,36)(H,33,37)(H2,34,35,38)/t23-,24-/m0/s1
HET Code:   INA PubChem:   5288634
DrugBank:   DB03891 ChEMBL:   CHEMBL115357
Molecular Formula:   C29H40N6O7 Mol. Weight:   584.29584 logP:   3.0302
HBD:   6 HBA:   7
#Rotatable Bonds:   12 TPSA:   175.99
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Nucleophilic Addition to a Double Bond CYS 25 A 15.93 12.71 Hydrazide
Binding Affinity
Database Name Value
PDBBind Ki : 0.7 nM