1GFW

THE 2.8 ANGSTROM CRYSTAL STRUCTURE OF CASPASE-3 (APOPAIN OR CPP32)IN COMPLEX WITH AN ISATIN SULFONAMIDE INHIBITOR.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.200 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Potent and selective nonpeptide inhibitors of caspases 3 and 7 inhibit apoptosis and maintain cell functionality.

Lee, D.Long, S.A.Adams, J.L.Chan, G.Vaidya, K.S.Francis, T.A.Kikly, K.Winkler, J.D.Sung, C.M.Debouck, C.Richardson, S.Levy, M.A.DeWolf Jr., W.E.Keller, P.M.Tomaszek, T.Head, M.S.Ryan, M.D.Haltiwanger, R.C.Liang, P.H.Janson, C.A.McDevitt, P.J.Johanson, K.Concha, N.O.Chan, W.Abdel-Meguid, S.S.Badger, A.M.Lark, M.W.Nadeau, D.P.Suva, L.J.Gowen, M.Nuttall, M.E.

(2000) J.Biol.Chem. 275: 16007-16014


  • PubMed Abstract: 
  • Caspases have been strongly implicated to play an essential role in apoptosis. A critical question regarding the role(s) of these proteases is whether selective inhibition of an effector caspase(s) will prevent cell death. We have identified potent a ...

    Caspases have been strongly implicated to play an essential role in apoptosis. A critical question regarding the role(s) of these proteases is whether selective inhibition of an effector caspase(s) will prevent cell death. We have identified potent and selective non-peptide inhibitors of the effector caspases 3 and 7. The inhibition of apoptosis and maintenance of cell functionality with a caspase 3/7-selective inhibitor is demonstrated for the first time, and suggests that targeting these two caspases alone is sufficient for blocking apoptosis. Furthermore, an x-ray co-crystal structure of the complex between recombinant human caspase 3 and an isatin sulfonamide inhibitor has been solved to 2.8-A resolution. In contrast to previously reported peptide-based caspase inhibitors, the isatin sulfonamides derive their selectivity for caspases 3 and 7 by interacting primarily with the S(2) subsite, and do not bind in the caspase primary aspartic acid binding pocket (S(1)). These inhibitors blocked apoptosis in murine bone marrow neutrophils and human chondrocytes. Furthermore, in camptothecin-induced chondrocyte apoptosis, cell functionality as measured by type II collagen promoter activity is maintained, an activity considered essential for cartilage homeostasis. These data suggest that inhibiting chondrocyte cell death with a caspase 3/7-selective inhibitor may provide a novel therapeutic approach for the prevention and treatment of osteoarthritis, or other disease states characterized by excessive apoptosis.


    Related Citations: 
    • CPP32, a novel human apoptotic protein with homology to Caenorhabditis elegans cell death protein ced-3 and mammalian interleukin-1-b-converting enzyme
      Fernandes-Alnemri, T.,Litwack, G.,Alnemri, E.S.
      (1994) J.Biol.Chem. 269: 30761


    Organizational Affiliation

    Department of Medicinal Chemistry, SmithKline Beecham Pharmaceuticals, King of Prussia, Pennsylvania 19406, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CASPASE-3 (APOPAIN, P20)
A
147Homo sapiensGene Names: CASP3 (CPP32)
EC: 3.4.22.56
Find proteins for P42574 (Homo sapiens)
Go to Gene View: CASP3
Go to UniProtKB:  P42574
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CASPASE-3 (APOPAIN, P10)
B
97Homo sapiensGene Names: CASP3 (CPP32)
EC: 3.4.22.56
Find proteins for P42574 (Homo sapiens)
Go to Gene View: CASP3
Go to UniProtKB:  P42574
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MSI
Query on MSI

Download SDF File 
Download CCD File 
A
1-METHYL-5-(2-PHENOXYMETHYL-PYRROLIDINE-1-SULFONYL)-1H-INDOLE-2,3-DIONE
C20 H20 N2 O5 S
PFAYCUAUBOGVDX-AWEZNQCLSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.200 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 67.200α = 90.00
b = 83.300β = 90.00
c = 96.000γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
MAR345data collection
X-PLORrefinement
AMoREphasing
CNSrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-06-23
    Type: Initial release
  • Version 1.1: 2008-04-26
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-04
    Type: Advisory, Refinement description