PDB Entry (1tu6)
PDB ID: 1tu6 Resolution: 1.75 Å Exp. Method: X-RAY DIFFRACTION
PMID: 15341947 DOI: 10.1016/j.bmcl.2004.07.031
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-(4-FLUOROBENZYL)CYCLOBUTYL]METHYL (1S)-1-[OXO(1H-PYRAZOL-5-YLAMINO)ACETYL]PENTYLCARBAMATE
Canonical SMILES:   c1cn[nH]c1NC(=O)C(=O)[C@H](CCCC)NC(=O)OCC2(CCC2)Cc3ccc(F)cc3
Standard InChI:   InChI=1S/C23H29FN4O4/c1-2-3-5-18(20(29)21(30)27-19-10-13-25-28-19)26-22(31)32-15-23(11-4-12-23)14-16-6-8-17(24)9-7-16/h6-10,13,18H,2-5,11-12,14-15H2,1H3,(H,26,31)(H2,25,27,28,30)/t18-/m0/s1
HET Code:   FSP PubChem:   5288259
DrugBank:   DB01858 ChEMBL:   CHEMBL185097
Molecular Formula:   C23H29FN4O4 Mol. Weight:   444.2173 logP:   3.7544
HBD:   3 HBA:   5
#Rotatable Bonds:   11 TPSA:   113.18
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Hemi(thio)acetalization CYS 139 A 16.84 11.69 Ketone
Binding Affinity
Database Name Value
PDBBind IC50 : 0.83 nM
BindingDB IC50 : 0.83 nM