Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 30.35 kDa 
• Atom Count: 1827 
• Modelled Residue Count: 229 
• Deposited Residue Count: 266 
• Unique protein chains: 1

2K7Z

Solution Structure of the Catalytic Domain of Procaspase-8

• PDB DOI: 10.2210/pdb2K7Z/pdb
• BMRB: 15932

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2008-08-28 Released: 2009-03-24 
• Deposition Author(s): Keller, N., Zerbe, O., Mares, J., Gruetter, M.G.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: target function 

Literature

Structural and biochemical studies on procaspase-8: new insights on initiator caspase activation.

Keller, N., Mares, J., Zerbe, O., Grutter, M.G.

(2009) Structure 17: 438-448

• PubMed: 19278658 
• DOI: 10.1016/j.str.2008.12.019
• Primary Citation of Related Structures:  
  2K7Z


• PubMed Abstract: 
  

Caspases are proteases with an active-site cysteine and aspartate specificity in their substrates. They are involved in apoptotic cell death and inflammation, and dysfunction of these enzymes is directly linked to a variety of diseases. Caspase-8 initiates an apoptotic pathway triggered by external stimuli. It was previously characterized in its active inhibitor bound state by crystallography. Here we present the solution structure of the monomeric unprocessed catalytic domain of the caspase-8 zymogen, procaspase-8, showing for the first time the position of the linker and flexibility of the active site forming loops. Biophysical studies of carefully designed mutants allowed disentangling dimerization and processing, and we could demonstrate lack of activity of monomeric uncleaved procaspase-8 and of a processed but dimerization-incompetent mutant. The data provide experimental support in so-far unprecedented detail, and reveal why caspase-8 (and most likely other initiator caspases) needs the dimerization platform during activation.

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Organizational Affiliation: 

Institute of Biochemistry, University of Zurich, CH-8057 Zurich, Switzerland.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Caspase-8	A	266	Homo sapiens	Mutation(s): 1  Gene Names: CASP8, MCH5 EC: 3.4.22.61
UniProt & NIH Common Fund Data Resources
Find proteins for Q14790 (Homo sapiens) Explore Q14790  Go to UniProtKB:  Q14790
PHAROS:  Q14790

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: target function 
• OLDERADO: 2K7Z Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2008-08-28 
• Released Date: 2009-03-24 
Deposition Author(s): Keller, N., Zerbe, O., Mares, J., Gruetter, M.G.

Revision History  

• Version 1.0: 2009-03-24
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2020-02-19
  Changes: Data collection, Database references, Derived calculations, Other
• Version 1.3: 2021-10-20
  Changes: Database references