PDB Entry (1nlj)
PDB ID: 1nlj Resolution: 2.4 Å Exp. Method: X-RAY DIFFRACTION
PMID: 11311061 DOI: 10.1021/jm000481x
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:   BENZOFURAN-2-CARBOXYLIC ACID {(S)-3-METHYL-1-[3-OXO-1-(PYRIDIN-2-YLSULFONYL)AZEPAN-4-YLCARBAMOYL]BUTYL}AMIDE
Canonical SMILES:   c1cccc(c12)cc(o2)C(=O)N[C@@H](CC(C)C)C(=O)N[C@H]3CCCN(CC3=O)S(=O)(=O)c4ccccn4
Standard InChI:   InChI=1S/C26H30N4O6S/c1-17(2)14-20(29-26(33)23-15-18-8-3-4-10-22(18)36-23)25(32)28-19-9-7-13-30(16-21(19)31)37(34,35)24-11-5-6-12-27-24/h3-6,8,10-12,15,17,19-20H,7,9,13-14,16H2,1-2H3,(H,28,32)(H,29,33)/t19-,20-/m0/s1
HET Code:   2CA PubChem:   5287468
DrugBank:   DB03642 ChEMBL:   CHEMBL286364
Molecular Formula:   C26H30N4O6S Mol. Weight:   526.1886 logP:   2.5109
HBD:   2 HBA:   7
#Rotatable Bonds:   8 TPSA:   138.68
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Hemi(thio)acetalization CYS 25 A 18.12 12.43 Ketone
Binding Affinity
Database Name Value
PDBBind Ki : 0.16 nM
BindingDB IC50 : 70-80 nM , IC50 : 70 nM , IC50 : 80 nM , Ki : 60 nM , Ki : 0.16 nM