PDB Entry (3kjq)
PDB ID: 3kjq 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,8R)-2-(3-carboxypropyl)-8-{2-[2-(4-chlorophenyl)acetamido]ethyl}-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)CCCn1c(=O)n2[C@H](CCNC(=O)Cc3ccc(Cl)cc3)C=C[C@@H](C(=O)N[C@@H](CC(O)=O)C(=O)COC(=O)c3c(Cl)cccc3Cl)n2c1=O
Standard InChI:   InChI=1S/C33H32Cl3N5O11/c34-19-8-6-18(7-9-19)15-26(43)37-13-12-20-10-11-24(41-33(51)39(32(50)40(20)41)14-2-5-27(44)45)30(48)38-23(16-28(46)47)25(42)17-52-31(49)29-21(35)3-1-4-22(29)36/h1,3-4,6-11,20,23-24H,2,5,12-17H2,(H,37,43)(H,38,48)(H,44,45)(H,46,47)/t20-,23-,24-/m0/s1
HET Code:   B94 PubChem:   -
DrugBank:   - ChEMBL:   -
Molecular Formula:   C33H32Cl3N5O11 Mol. Weight:   779.1164 logP:   2.4231
HBD:   4 HBA:   12
#Rotatable Bonds:   17 TPSA:   225.1
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Nucleophilic Aliphatic Subsititution CYS 360 A 30.38 13.95 Acyloxymethyl Carbonyl
Binding Affinity
Database Name Value
PDBBind Ki : 1320 nM
Binding MOAD Ki : 1320 nM