PDB Entry (1npz)
PDB ID: 1npz Resolution: 2.0 Å Exp. Method: X-RAY DIFFRACTION
PMID: 12641451 DOI: 10.1021/bi027308i
Protein
Protein Name: Cathepsin S
Uniprot ID/ACC: P25774 (CATS_HUMAN) Organism: Homo sapiens (Human)
Gene Symbol: CTSS Gene ID: 1520
Protein Class: HYDROLASE
Ligand
Ligand Name:   K11017
Canonical SMILES:   C1COCCN1C(=O)N[C@@H](CC(C)C)C(=O)N[C@H](CCc2ccccc2)/C=C/S(=O)(=O)c3ccccc3
Standard InChI:   InChI=1S/C28H37N3O5S/c1-22(2)21-26(30-28(33)31-16-18-36-19-17-31)27(32)29-24(14-13-23-9-5-3-6-10-23)15-20-37(34,35)25-11-7-4-8-12-25/h3-12,15,20,22,24,26H,13-14,16-19,21H2,1-2H3,(H,29,32)(H,30,33)/b20-15+/t24-,26+/m1/s1
HET Code:   C1P PubChem:   -
DrugBank:   - ChEMBL:   -
Molecular Formula:   C28H37N3O5S Mol. Weight:   527.2454 logP:   3.5481
HBD:   2 HBA:   5
#Rotatable Bonds:   11 TPSA:   104.81
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Michael Addition CYS 25 A 16.38 13.45 Vinyl Sulfonyl
Binding Affinity
Database Name Value
PDBBind Ki : 13 nM
BindingDB IC50 : 1-1.2 nM