3FFS

The Crystal Structure of Cryptosporidium parvum Inosine-5'-Monophosphate Dehydrogenase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.19 Å
  • R-Value Free: 0.328 
  • R-Value Work: 0.269 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The structural basis of Cryptosporidium -specific IMP dehydrogenase inhibitor selectivity

Macpherson, I.S.Kirubakaran, S.Gorla, S.K.Riera, T.V.D'Aquino, J.A.Zhang, M.Cuny, G.D.Hedstrom, L.

(2010) J.Am.Chem.Soc. 132: 1230-1231

  • DOI: 10.1021/ja909947a
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Cryptosporidium parvum is a potential biowarfare agent, an important AIDS pathogen, and a major cause of diarrhea and malnutrition. No vaccines or effective drug treatment exist to combat Cryptosporidium infection. This parasite relies on inosine 5'- ...

    Cryptosporidium parvum is a potential biowarfare agent, an important AIDS pathogen, and a major cause of diarrhea and malnutrition. No vaccines or effective drug treatment exist to combat Cryptosporidium infection. This parasite relies on inosine 5'-monophosphate dehydrogenase (IMPDH) to obtain guanine nucleotides, and inhibition of this enzyme blocks parasite proliferation. Here, we report the first crystal structures of CpIMPDH. These structures reveal the structural basis of inhibitor selectivity and suggest a strategy for further optimization. Using this information, we have synthesized low-nanomolar inhibitors that display 10(3) selectivity for the parasite enzyme over human IMPDH2.


    Organizational Affiliation

    Departments of Biology, Brandeis University, MS009, 415 South Street, Waltham, Massachusetts 02454, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Inosine-5-monophosphate dehydrogenase
A, B, C, D
400Cryptosporidium parvumMutation(s): 0 
EC: 1.1.1.205
Find proteins for Q8T6T2 (Cryptosporidium parvum)
Go to UniProtKB:  Q8T6T2
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.19 Å
  • R-Value Free: 0.328 
  • R-Value Work: 0.269 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 119.068α = 90.00
b = 153.319β = 90.00
c = 98.228γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
REFMACrefinement
HKL-2000data collection
DMphasing
SCALEPACKdata scaling
HKL-2000data scaling
HKL-2000data reduction
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-12-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-11-01
    Type: Refinement description