4FEA

Crystal structure of CASPASE-7 in Complex with allosteric inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.79 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.236 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A class of allosteric caspase inhibitors identified by high-throughput screening.

Feldman, T.Kabaleeswaran, V.Jang, S.B.Antczak, C.Djaballah, H.Wu, H.Jiang, X.

(2012) Mol.Cell 47: 585-595

  • DOI: 10.1016/j.molcel.2012.06.007
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Caspase inhibition is a promising approach for treating multiple diseases. Using a reconstituted assay and high-throughput screening, we identified a group of nonpeptide caspase inhibitors. These inhibitors share common chemical scaffolds, suggesting ...

    Caspase inhibition is a promising approach for treating multiple diseases. Using a reconstituted assay and high-throughput screening, we identified a group of nonpeptide caspase inhibitors. These inhibitors share common chemical scaffolds, suggesting the same mechanism of action. They can inhibit apoptosis in various cell types induced by multiple stimuli; they can also inhibit caspase-1-mediated interleukin generation in macrophages, indicating potential anti-inflammatory application. While these compounds inhibit all the tested caspases, kinetic analysis indicates they do not compete for the catalytic sites of the enzymes. The cocrystal structure of one of these compounds with caspase-7 reveals that it binds to the dimerization interface of the caspase, another common structural element shared by all active caspases. Consistently, biochemical analysis demonstrates that the compound abates caspase-8 dimerization. Based on these kinetic, biochemical, and structural analyses, we suggest that these compounds are allosteric caspase inhibitors that function through binding to the dimerization interface of caspases.


    Organizational Affiliation

    Cell Biology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Caspase-7
A, B
247Homo sapiensMutation(s): 0 
Gene Names: CASP7 (MCH3)
EC: 3.4.22.60
Find proteins for P55210 (Homo sapiens)
Go to Gene View: CASP7
Go to UniProtKB:  P55210
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
0TE
Query on 0TE

Download SDF File 
Download CCD File 
A, B
chloro{methyl hydrogenato(3-)-kappa~2~N,S [pyridin-2-yl(pyridin-2(1H)-ylidene-kappaN)methyl]carbonodithiohydrazonate}copper
C13 H11 Cl Cu N4 S2
YLWQIHKUHNHPEC-UHFFFAOYSA-L
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
0TEKi: 340 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.79 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.236 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 88.720α = 90.00
b = 88.720β = 90.00
c = 185.660γ = 120.00
Software Package:
Software NamePurpose
SCALAdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
Blu-Icedata collection
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2012-05-29 
  • Released Date: 2012-08-01 
  • Deposition Author(s): Kabaleeswaran, V.

Revision History 

  • Version 1.0: 2012-08-01
    Type: Initial release
  • Version 1.1: 2012-09-12
    Type: Database references