1QTN

CRYSTAL STRUCTURE OF THE COMPLEX OF CASPASE-8 WITH THE TETRAPEPTIDE INHIBITOR ACE-IETD-ALDEHYDE

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å
  • R-Value Free: 0.188 
  • R-Value Work: 0.143 
  • R-Value Observed: 0.166 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history. 


Literature

The atomic-resolution structure of human caspase-8, a key activator of apoptosis.

Watt, W., Koeplinger, K.A., Mildner, A.M., Heinrikson, R.L., Tomasselli, A.G., Watenpaugh, K.D.

(1999) Structure 7: 1135-1143

  • DOI: 10.1016/s0969-2126(99)80180-4
  • Primary Citation of Related Structures:  
    1QTN

  • PubMed Abstract: 

    • Caspases are a family of cysteine proteases that have important intracellular roles in inflammation and apoptosis. Caspase-8 activates downstream caspases which are unable to carry out autocatalytic processing and activation. Caspase-8 is designated as an initiator caspase and is believed to sit at the apex of the Fas- or TNF-mediated apoptotic cascade ...

    Caspases are a family of cysteine proteases that have important intracellular roles in inflammation and apoptosis. Caspase-8 activates downstream caspases which are unable to carry out autocatalytic processing and activation. Caspase-8 is designated as an initiator caspase and is believed to sit at the apex of the Fas- or TNF-mediated apoptotic cascade. In view of this role, the enzyme is an attractive target for the design of inhibitors aimed at blocking the undesirable cell death associated with a range of degenerative disorders.

    Organizational Affiliation: 

    Structural, Analytical & Medicinal Chemistry Pharmacia & Upjohn Inc. 301 Henrietta Street, Kalamazoo, MI 49007, USA.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CASPASE-8A164Homo sapiensMutation(s): 0 
Gene Names: CASP8, MCH5
EC: 3.4.22 (PDB Primary Data), 3.4.22.61 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q14790 (Homo sapiens)
Explore Q14790 
Go to UniProtKB:  Q14790
PHAROS:  Q14790
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ14790
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
CASPASE-8B95Homo sapiensMutation(s): 0 
Gene Names: CASP8, MCH5
EC: 3.4.22 (PDB Primary Data), 3.4.22.61 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q14790 (Homo sapiens)
Explore Q14790 
Go to UniProtKB:  Q14790
PHAROS:  Q14790
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ14790
Protein Feature View
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
ACETYL-ILE-GLU-THR-ASP-ALDEHYDEC5N/AMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DTD
Query on DTD
Download Ideal Coordinates CCD File 
D [auth A],
E [auth B]		DITHIANE DIOL
C4 H8 O2 S2
YPGMOWHXEQDBBV-IMJSIDKUSA-N		 Ligand Interaction
Biologically Interesting Molecules (External Reference) 1 Unique
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å
  • R-Value Free: 0.188 
  • R-Value Work: 0.143 
  • R-Value Observed: 0.166 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.4α = 90
b = 62.4β = 90
c = 129.25γ = 120
Software Package:
Software NamePurpose
AMoREphasing
SHELXL-97refinement
SMARTdata reduction
SAINTdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-09-20
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary, Version format compliance
  • Version 1.3: 2012-04-04
    Changes: Structure summary
  • Version 1.4: 2012-12-12
    Changes: Other