PDB Entry (3i06)
PDB ID: 3i06 Resolution: 1.1 Å Exp. Method: X-RAY DIFFRACTION
PMID: 19908842 DOI: 10.1021/jm901069a
Protein
Protein Name: Cruzipain
Uniprot ID/ACC: P25779 (CYSP_TRYCR) Organism: Trypanosoma cruzi
Gene Symbol: - Gene ID: -
Protein Class: HYDROLASE
Ligand
Ligand Name:   6-[(3,5-difluorophenyl)amino]-9-ethyl-purine-2-carbonitrile
Canonical SMILES:   CCn1cnc(c12)c(nc(n2)C#N)Nc3cc(F)cc(F)c3
Standard InChI:   InChI=1S/C14H10F2N6/c1-2-22-7-18-12-13(20-11(6-17)21-14(12)22)19-10-4-8(15)3-9(16)5-10/h3-5,7H,2H2,1H3,(H,19,20,21)
HET Code:   QL2 PubChem:   44143088
DrugBank:   - ChEMBL:   CHEMBL567341
Molecular Formula:   C14H10F2N6 Mol. Weight:   300.0935 logP:   2.73968
HBD:   1 HBA:   6
#Rotatable Bonds:   3 TPSA:   79.42
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Nucleophilic Addition to a Triple Bond CYS 25 A 14.23 12.84 Nitrile
Binding Affinity
Database Name Value
PDBBind IC50 : 0.2 nM
BindingDB IC50 : 0.2-10 nM , IC50 : 0.2 nM , IC50 : 10 nM