1ME4

High Resolution Crystal Structure Analysis Of Cruzain non-covalently Bound To A Hydroxymethyl Ketone Inhibitor (I)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

Crystal Structures of Reversible Ketone-based Inhibitors of the Cysteine Protease Cruzain

Huang, L., Brinen, L.S., Ellman, J.A.

(2003) Bioorg Med Chem 11: 21-29

  • DOI: 10.1016/s0968-0896(02)00427-3
  • Primary Citation of Related Structures:  
    1ME3, 1ME4

  • PubMed Abstract: 

    • The crystal structures of two hydroxymethyl ketone inhibitors complexed to the cysteine protease cruzain have been determined at 1.1 and 1.2 A resolution, respectively. These high resolution crystal structures provide the first structures of non-covalent inhibitors bound to cruzain ...

    The crystal structures of two hydroxymethyl ketone inhibitors complexed to the cysteine protease cruzain have been determined at 1.1 and 1.2 A resolution, respectively. These high resolution crystal structures provide the first structures of non-covalent inhibitors bound to cruzain. A series of compounds were prepared and tested based upon the structures providing further insight into the key binding interactions.

    Related Citations: 
    • A target within the target: probing cruzain's P1' site to define structural determinants for the Chagas' disease protease.
      Brinen, L.S., Hansell, E., Cheng, J., Roush, W.R., McKerrow, J.H., Fletterick, R.J.
      (2000) Structure 8: 831
    • THE CRYSTAL STRUCTURE OF CRUZAIN: A THERAPEUTIC TARGET FOR CHAGAS' DISEASE
      MCGRATH, M.E., EAKIN, A.E., ENGEL, J.C., MCKERROW, J.H., CRAIK, C.S., FLETTERICK, R.J.
      (1995) J Mol Biol 247: 251
    Organizational Affiliation: 

    Center for New Directions in Organic Synthesis, Department of Chemistry, University of California, Berkeley 94720, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CRUZIPAINA215Trypanosoma cruziMutation(s): 0 
EC: 3.4.22 (PDB Primary Data), 3.4.22.51 (UniProt)
UniProt
Find proteins for P25779 (Trypanosoma cruzi)
Explore P25779 
Go to UniProtKB:  P25779
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP25779
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
T10
Query on T10
Download Ideal Coordinates CCD File 
B [auth A][1-(1-BENZYL-3-HYDROXY-2-OXO-PROPYLCARBAMOYL)-2-PHENYL-ETHYL]-CARBAMIC ACID BENZYL ESTER
C27 H28 N2 O5
OACUXIVGLLCILS-ZEQRLZLVSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
T10 PDBBind:  1ME4 Ki: 146 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.523α = 90
b = 51.712β = 116.53
c = 46.04γ = 90
Software Package:
Software NamePurpose
MAR345data collection
SCALEPACKdata scaling
AMoREphasing
SHELXL-97refinement

Structure Validation

View Full Validation Report



View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-12-18
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Atomic model, Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Refinement description