PDB Entry (4x6j)
PDB ID: 4x6j Resolution: 1.59 Å Exp. Method: X-RAY DIFFRACTION
PMID: 26280490 DOI: 10.1021/acs.jmedchem.5b00746
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:   2-amino-4-chloro-N-{1-[(cyanomethyl)carbamoyl]cyclohexyl}benzamide
Canonical SMILES:   Nc1cc(Cl)ccc1C(=O)NC2(C(=O)NCC#N)CCCCC2
Standard InChI:   InChI=1S/C16H19ClN4O2/c17-11-4-5-12(13(19)10-11)14(22)21-16(6-2-1-3-7-16)15(23)20-9-8-18/h4-5,10H,1-3,6-7,9,19H2,(H,20,23)(H,21,22)
HET Code:   3Y2 PubChem:   122186479
DrugBank:   - ChEMBL:   CHEMBL3605409
Molecular Formula:   C16H19ClN4O2 Mol. Weight:   334.11966 logP:   1.99468
HBD:   3 HBA:   4
#Rotatable Bonds:   4 TPSA:   108.01
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Nucleophilic Addition to a Triple Bond CYS 25 A 17.97 12.56 Nitrile
Binding Affinity
Database Name Value
PDBBind Ki : 16 nM