PDB Entry (1rwx)
PDB ID: 1rwx Resolution: 1.85 Å Exp. Method: X-RAY DIFFRACTION
PMID: 16274992 DOI: 10.1016/j.bmcl.2005.10.048
Protein
Protein Name: Caspase-1
Uniprot ID/ACC: P29466 (CASP1_HUMAN) Organism: Homo sapiens (Human)
Gene Symbol: CASP1 Gene ID: 834
Protein Class: HYDROLASE
Ligand
Ligand Name:   4-oxo-3-{6-[4-(quinoxalin-2-yloxy)-benzoylamino]-2-thiophen-2-yl-hexanoylamino}-butyric acid
Canonical SMILES:   OC(=O)C[C@H](NC(=O)[C@H](CCCCNC(=O)c1ccc(Oc2cnc3ccccc3n2)cc1)c1cccs1)C=O
Standard InChI:   InChI=1S/C29H28N4O6S/c34-18-20(16-27(35)36)32-29(38)22(25-9-5-15-40-25)6-3-4-14-30-28(37)19-10-12-21(13-11-19)39-26-17-31-23-7-1-2-8-24(23)33-26/h1-2,5,7-13,15,17-18,20,22H,3-4,6,14,16H2,(H,30,37)(H,32,38)(H,35,36)/t20-,22+/m0/s1
HET Code:   YBH PubChem:   -
DrugBank:   - ChEMBL:   -
Molecular Formula:   C29H28N4O6S Mol. Weight:   560.173 logP:   4.3259
HBD:   3 HBA:   8
#Rotatable Bonds:   14 TPSA:   147.58
Covalent Mechanism
Reaction Name Residue Chain ID SASA pKa Warhead Name Warhead Structure
Hemi(thio)acetalization CYS 285 A 29.9 12.76 Aldehyde
Binding Affinity
Database Name Value
PDBBind Ki : 43 nM