2OZ2

Crystal structure analysis of cruzain bound to vinyl sulfone derived inhibitor (K11777)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.157 
  • R-Value Observed: 0.159 

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This is version 1.2 of the entry. See complete history


Literature

Vinyl sulfones as antiparasitic agents and a structural basis for drug design.

Kerr, I.D.Lee, J.H.Farady, C.J.Marion, R.Rickert, M.Sajid, M.Pandey, K.C.Caffrey, C.R.Legac, J.Hansell, E.McKerrow, J.H.Craik, C.S.Rosenthal, P.J.Brinen, L.S.

(2009) J Biol Chem 284: 25697-25703

  • DOI: 10.1074/jbc.M109.014340
  • Primary Citation of Related Structures:  
    3BWK, 2P7U, 2OZ2

  • PubMed Abstract: 
  • Cysteine proteases of the papain superfamily are implicated in a number of cellular processes and are important virulence factors in the pathogenesis of parasitic disease. These enzymes have therefore emerged as promising targets for antiparasitic drugs. We report the crystal structures of three major parasite cysteine proteases, cruzain, falcipain-3, and the first reported structure of rhodesain, in complex with a class of potent, small molecule, cysteine protease inhibitors, the vinyl sulfones ...

    Cysteine proteases of the papain superfamily are implicated in a number of cellular processes and are important virulence factors in the pathogenesis of parasitic disease. These enzymes have therefore emerged as promising targets for antiparasitic drugs. We report the crystal structures of three major parasite cysteine proteases, cruzain, falcipain-3, and the first reported structure of rhodesain, in complex with a class of potent, small molecule, cysteine protease inhibitors, the vinyl sulfones. These data, in conjunction with comparative inhibition kinetics, provide insight into the molecular mechanisms that drive cysteine protease inhibition by vinyl sulfones, the binding specificity of these important proteases and the potential of vinyl sulfones as antiparasitic drugs.


    Organizational Affiliation

    Department of Cellular and Molecular Pharmacology, University of California, San Francisco, California 94158-2550, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CruzipainA, B [auth C]215Trypanosoma cruziMutation(s): 0 
EC: 3.4.22.51
UniProt
Find proteins for P25779 (Trypanosoma cruzi)
Explore P25779 
Go to UniProtKB:  P25779
Protein Feature View
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  • Reference Sequence
Small Molecules
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
D1RKd :  1930   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.157 
  • R-Value Observed: 0.159 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 134.346α = 90
b = 37.954β = 114.34
c = 95.202γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-02-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2019-09-04
    Changes: Data collection, Derived calculations