PDB Entry (1u9w)
PDB ID: 1u9w Resolution: 2.3 Å Exp. Method: X-RAY DIFFRACTION
PMID: 15537340 DOI: 10.1021/jm0493111
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:   NVP-ABI491
Canonical SMILES:   c1cncn1CCCOc2ccccc2Nc(nc(n3)C#N)c(c34)ncn4C5CCCC5
Standard InChI:   InChI=1S/C23H24N8O/c24-14-20-28-22(21-23(29-20)31(16-26-21)17-6-1-2-7-17)27-18-8-3-4-9-19(18)32-13-5-11-30-12-10-25-15-30/h3-4,8-10,12,15-17H,1-2,5-7,11,13H2,(H,27,28,29)
HET Code:   IHI PubChem:   11464526
DrugBank:   DB07967 ChEMBL:   CHEMBL188865
Molecular Formula:   C23H24N8O Mol. Weight:   428.2073 logP:   4.22228
HBD:   1 HBA:   9
#Rotatable Bonds:   8 TPSA:   106.47
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Nucleophilic Addition to a Triple Bond CYS 25 A 16.38 12.47 Nitrile
Binding Affinity
Database Name Value
PDBBind IC50 : 3.5 nM
BindingDB IC50 : 3.5 nM