PDB Entry (3kw9)
PDB ID: 3kw9 Resolution: 1.8 Å Exp. Method: X-RAY DIFFRACTION
PMID: 20149657 DOI: 10.1016/j.bmcl.2010.01.100
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:   4-(cyclohexylamino)-6-piperazin-1-yl-1,3,5-triazine-2-carbonitrile
Canonical SMILES:   N#Cc1nc(NC2CCCCC2)nc(n1)N1CCNCC1
Standard InChI:   InChI=1S/C14H21N7/c15-10-12-18-13(17-11-4-2-1-3-5-11)20-14(19-12)21-8-6-16-7-9-21/h11,16H,1-9H2,(H,17,18,19,20)
HET Code:   ORG PubChem:   11471738
DrugBank:   - ChEMBL:   CHEMBL1084679
Molecular Formula:   C14H21N7 Mol. Weight:   287.18585 logP:   0.89748
HBD:   2 HBA:   7
#Rotatable Bonds:   3 TPSA:   89.76
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Nucleophilic Addition to a Triple Bond CYS 25 A 15.03 12.56 Nitrile
Binding Affinity
Database Name Value
PDBBind IC50 : 1 nM
BindingDB IC50 : 1 nM