PDB Entry (3kjn)
PDB ID: 3kjn Resolution: 1.8 Å Exp. Method: X-RAY DIFFRACTION
PMID: 20580860 DOI: 10.1016/j.bbapap.2010.05.007
Protein
Protein Name: Caspase-8
Uniprot ID/ACC: Q14790 (CASP8_HUMAN) Organism: Homo sapiens (Human)
Gene Symbol: CASP8 Gene ID: 841
Protein Class: HYDROLASE
Ligand
Ligand Name:   (3S)-3-{[(5S)-2-{2-[(1H-1,3-benzodiazol-5-yl)formamido]ethyl}-7-(cyclohexylmethyl)-1,3-dioxo-1H,2H,3H,5H,8H-[1,2,4]triazolo[1,2-a]pyridazin-5-yl]formamido}-5-(2,6-dichlorobenzoyloxy)-4-oxopentanoic acid
Canonical SMILES:   OC(=O)C[C@H](NC(=O)[C@@H]1C=C(CC2CCCCC2)Cn2n1c(=O)n(CCNC(=O)c1ccc3[nH]cnc3c1)c2=O)C(=O)COC(=O)c1c(Cl)cccc1Cl
Standard InChI:   InChI=1S/C36H37Cl2N7O9/c37-23-7-4-8-24(38)31(23)34(51)54-18-29(46)27(16-30(47)48)42-33(50)28-14-21(13-20-5-2-1-3-6-20)17-44-35(52)43(36(53)45(28)44)12-11-39-32(49)22-9-10-25-26(15-22)41-19-40-25/h4,7-10,14-15,19-20,27-28H,1-3,5-6,11-13,16-18H2,(H,39,49)(H,40,41)(H,42,50)(H,47,48)/t27-,28-/m0/s1
HET Code:   B93 PubChem:   -
DrugBank:   - ChEMBL:   -
Molecular Formula:   C36H37Cl2N7O9 Mol. Weight:   781.203 logP:   3.2617
HBD:   4 HBA:   12
#Rotatable Bonds:   14 TPSA:   216.48
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Nucleophilic Aliphatic Subsititution CYS 360 A 30.85 13.79 Acyloxymethyl Carbonyl
Binding Affinity
Database Name Value
PDBBind Ki : 6440 nM