PDB Entry (1ito)
PDB ID: 1ito Resolution: 2.29 Å Exp. Method: X-RAY DIFFRACTION
PMID: 12044902 DOI: 10.1016/S0167-4838(02)00284-4
Protein
Protein Name: Cathepsin B
Uniprot ID/ACC: P07688 (CATB_BOVIN) Organism: Bos taurus (Bovine)
Gene Symbol: CTSB Gene ID: 281105
Protein Class: HYDROLASE
Ligand
Ligand Name:   E-64-C
Canonical SMILES:   CC(C)CCNC(=O)[C@H](CC(C)C)NC(=O)[C@@H]1O[C@H]1C(O)=O
Standard InChI:   InChI=1S/C15H26N2O5/c1-8(2)5-6-16-13(18)10(7-9(3)4)17-14(19)11-12(22-11)15(20)21/h8-12H,5-7H2,1-4H3,(H,16,18)(H,17,19)(H,20,21)/t10-,11+,12+/m0/s1
HET Code:   E6C PubChem:   9995770
DrugBank:   - ChEMBL:   -
Molecular Formula:   C15H26N2O5 Mol. Weight:   314.18417 logP:   0.5316
HBD:   3 HBA:   4
#Rotatable Bonds:   9 TPSA:   108.03
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Epoxide Opening CYS 29 A 16.79 15.82 Epoxide
Binding Affinity
Database Name Value
BindingDB IC50 : 40 nM