PDB Entry (1nqc)
PDB ID: 1nqc Resolution: 1.8 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:   morpholine-4-carboxylic acid [1-(2-benzylsulfanyl-1-formyl-ethylcarbamoyl)-2-phenyl-ethyl]-amide
Canonical SMILES:   C1COCCN1C(=O)N[C@@H](Cc2ccccc2)C(=O)N[C@H](C=O)CSCc3ccccc3
Standard InChI:   InChI=1S/C24H29N3O4S/c28-16-21(18-32-17-20-9-5-2-6-10-20)25-23(29)22(15-19-7-3-1-4-8-19)26-24(30)27-11-13-31-14-12-27/h1-10,16,21-22H,11-15,17-18H2,(H,25,29)(H,26,30)/t21-,22+/m1/s1
HET Code:   C4P PubChem:   5287870
DrugBank:   DB03984 ChEMBL:   CHEMBL1231608
Molecular Formula:   C24H29N3O4S Mol. Weight:   455.18787 logP:   2.2566
HBD:   2 HBA:   5
#Rotatable Bonds:   10 TPSA:   87.74
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Hemi(thio)acetalization CYS 25 A 16.32 12.81 Aldehyde
Binding Affinity
Database Name Value
PDBBind Ki : 50 nM