5V6U

Crystal structure of human caspase-7 soaked with allosteric inhibitor 2-[(2-acetylphenyl)sulfanyl]benzoic acid

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.194 

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Literature

Allosteric Tuning of Caspase-7: A Fragment-Based Drug Discovery Approach.

Vance, N.R., Gakhar, L., Spies, M.A.

(2017) Angew Chem Int Ed Engl 56: 14443-14447

  • DOI: 10.1002/anie.201706959
  • Primary Citation of Related Structures:  
    5V6U

  • PubMed Abstract: 

    • The caspase family of cysteine proteases are highly sought-after drug targets owing to their essential roles in apoptosis, proliferation, and inflammation pathways. High-throughput screening efforts to discover inhibitors have gained little traction. Fragment-based screening has emerged as a powerful approach for the discovery of innovative drug leads ...

    The caspase family of cysteine proteases are highly sought-after drug targets owing to their essential roles in apoptosis, proliferation, and inflammation pathways. High-throughput screening efforts to discover inhibitors have gained little traction. Fragment-based screening has emerged as a powerful approach for the discovery of innovative drug leads. This method has become a central facet of drug discovery campaigns in the pharmaceutical industry and academia. A fragment-based drug discovery campaign against human caspase-7 resulted in the discovery of a novel series of allosteric inhibitors. An X-ray crystal structure of caspase-7 bound to a fragment hit and a thorough kinetic characterization of a zymogenic form of the enzyme were used to investigate the allosteric mechanism of inhibition. This work further advances our understanding of the mechanisms of allosteric control of this class of pharmaceutically relevant enzymes, and provides a new path forward for drug discovery efforts.

    Organizational Affiliation: 

    Department of Biochemistry, College of Medicine, University of Iowa, 51 Newton Road, Iowa City, IA, 52242, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Caspase-7A, B303Homo sapiensMutation(s): 0 
Gene Names: CASP7, MCH3
EC: 3.4.22.60
UniProt & NIH Common Fund Data Resources
Find proteins for P55210 (Homo sapiens)
Explore P55210 
Go to UniProtKB:  P55210
PHAROS:  P55210
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP55210
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
8YM
Query on 8YM
Download Ideal Coordinates CCD File 
C [auth B]2-[(2-acetylphenyl)sulfanyl]benzoic acid
C15 H12 O3 S
UVKUNTVZWDIEDN-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.194 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.393α = 90
b = 88.393β = 90
c = 185.358γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-10-18
    Type: Initial release
  • Version 1.1: 2017-11-22
    Changes: Database references