PDB Entry (3kwb)
PDB ID: 3kwb Resolution: 2.02 Å Exp. Method: X-RAY DIFFRACTION
PMID: 20153187 DOI: 10.1016/j.bmcl.2010.01.116
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:   3,5-dioxo-4-(3-piperidin-1-ylpropyl)-2-[3-(trifluoromethyl)phenyl]-2,3,4,5-tetrahydro-1,2,4-triazine-6-carbonitrile
Canonical SMILES:   FC(F)(F)c1cccc(c1)-n1nc(C#N)c(=O)n(CCCN2CCCCC2)c1=O
Standard InChI:   InChI=1S/C19H20F3N5O2/c20-19(21,22)14-6-4-7-15(12-14)27-18(29)26(17(28)16(13-23)24-27)11-5-10-25-8-2-1-3-9-25/h4,6-7,12H,1-3,5,8-11H2
HET Code:   ORH PubChem:   46865101
DrugBank:   - ChEMBL:   CHEMBL1084114
Molecular Formula:   C19H20F3N5O2 Mol. Weight:   407.15692 logP:   2.16068
HBD:   0 HBA:   7
#Rotatable Bonds:   5 TPSA:   83.92
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Nucleophilic Addition to a Triple Bond CYS 1025 X 16.98 12.86 Nitrile
Binding Affinity
Database Name Value
PDBBind IC50 : 17 nM
BindingDB IC50 : 17 nM