2WUZ

X-ray structure of CYP51 from Trypanosoma cruzi in complex with fluconazole in alternative conformation


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.220 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Structural Characterization of Cyp51 from Trypanosoma Cruzi and Trypanosoma Brucei Bound to the Antifungal Drugs Posaconazole and Fluconazole

Chen, C.-K.Leung, S.S.F.Guilbert, C.Jacobson, M.Mckerrow, J.H.Podust, L.M.

(2010) PLoS Negl Trop Dis 4: E651

  • DOI: https://doi.org/10.1371/journal.pntd.0000651
  • Primary Citation of Related Structures:  
    2WUZ, 2WV2, 2WX2, 2X2N

  • PubMed Abstract: 

    Chagas Disease is the leading cause of heart failure in Latin America. Current drug therapy is limited by issues of both efficacy and severe side effects. Trypansoma cruzi, the protozoan agent of Chagas Disease, is closely related to two other major global pathogens, Leishmania spp., responsible for leishmaniasis, and Trypansoma brucei, the causative agent of African Sleeping Sickness. Both T. cruzi and Leishmania parasites have an essential requirement for ergosterol, and are thus vulnerable to inhibitors of sterol 14alpha-demethylase (CYP51), which catalyzes the conversion of lanosterol to ergosterol. Clinically employed anti-fungal azoles inhibit ergosterol biosynthesis in fungi, and specific azoles are also effective against both Trypanosoma and Leishmania parasites. However, modification of azoles to enhance efficacy and circumvent potential drug resistance has been problematic for both parasitic and fungal infections due to the lack of structural insights into drug binding.


  • Organizational Affiliation

    Department of Pharmaceutical Chemistry, University of California, San Francisco, California, United States of America.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
LANOSTEROL 14-ALPHA-DEMETHYLASE, PUTATIVE
A, B
473Trypanosoma cruziMutation(s): 0 
EC: 1.14.13.70
Membrane Entity: Yes 
UniProt
Find proteins for Q7Z1V1 (Trypanosoma cruzi (strain CL Brener))
Explore Q7Z1V1 
Go to UniProtKB:  Q7Z1V1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ7Z1V1
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
TPF BindingDB:  2WUZ Kd: min: 230, max: 340 (nM) from 2 assay(s)
IC50: 880 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.220 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 74.858α = 90
b = 92.574β = 102.14
c = 78.277γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-10-20
    Type: Initial release
  • Version 1.1: 2012-04-11
    Changes: Database references, Derived calculations, Non-polymer description, Refinement description, Version format compliance
  • Version 1.2: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description