1I51

CRYSTAL STRUCTURE OF CASPASE-7 COMPLEXED WITH XIAP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.235 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural basis of caspase-7 inhibition by XIAP.

Chai, J.Shiozaki, E.Srinivasula, S.M.Wu, Q.Datta, P.Alnemri, E.S.Shi, Y.Dataa, P.

(2001) Cell 104: 769-780

  • DOI: 10.1016/s0092-8674(01)00272-0
  • Primary Citation of Related Structures:  
    1I51

  • PubMed Abstract: 
  • The inhibitor of apoptosis (IAP) proteins suppress cell death by inhibiting the catalytic activity of caspases. Here we present the crystal structure of caspase-7 in complex with a potent inhibitory fragment from XIAP at 2.45 A resolution. An 18-residue ...

    The inhibitor of apoptosis (IAP) proteins suppress cell death by inhibiting the catalytic activity of caspases. Here we present the crystal structure of caspase-7 in complex with a potent inhibitory fragment from XIAP at 2.45 A resolution. An 18-residue XIAP peptide binds the catalytic groove of caspase-7, making extensive contacts to the residues that are essential for its catalytic activity. Strikingly, despite a reversal of relative orientation, a subset of interactions between caspase-7 and XIAP closely resemble those between caspase-7 and its tetrapeptide inhibitor DEVD-CHO. Our biochemical and structural analyses reveal that the BIR domains are dispensable for the inhibition of caspase-3 and -7. This study provides a structural basis for the design of the next-generation caspase inhibitors.


    Organizational Affiliation

    Department of Molecular Biology, Princeton University, Lewis Thomas Laboratory, Washington Road, Princeton, NJ 08544, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CASPASE-7 SUBUNIT P20 AC148Homo sapiensMutation(s): 1 
Gene Names: CASP7MCH3
EC: 3.4.22 (PDB Primary Data), 3.4.22.60 (UniProt)
Find proteins for P55210 (Homo sapiens)
Explore P55210 
Go to UniProtKB:  P55210
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PHAROS:  P55210
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
CASPASE-7 SUBUNIT P11 BD105Homo sapiensMutation(s): 0 
Gene Names: CASP7MCH3
EC: 3.4.22 (PDB Primary Data), 3.4.22.60 (UniProt)
Find proteins for P55210 (Homo sapiens)
Explore P55210 
Go to UniProtKB:  P55210
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PHAROS:  P55210
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
X-LINKED INHIBITOR OF APOPTOSIS PROTEIN EF117Homo sapiensMutation(s): 0 
Gene Names: XIAPAPI3BIRC4IAP3
EC: 2.3.2.27
Find proteins for P98170 (Homo sapiens)
Explore P98170 
Go to UniProtKB:  P98170
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PHAROS:  P98170
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.235 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 89.6α = 90
b = 89.6β = 90
c = 185.5γ = 120
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2001-02-23 
  • Released Date: 2002-02-23 
  • Deposition Author(s): Chai, J., Shi, Y.

Revision History 

  • Version 1.0: 2002-02-23
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance