5EBK

Trypanothione reductase in complex with 6-(sec-butoxy)-2-((3-chlorophenyl)thio)pyrimidin-4-amine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.51 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Inhibition of Leishmania infantum trypanothione reductase by diaryl sulfide derivatives.

Saccoliti, F.Angiulli, G.Pupo, G.Pescatori, L.Madia, V.N.Messore, A.Colotti, G.Fiorillo, A.Scipione, L.Gramiccia, M.Di Muccio, T.Di Santo, R.Costi, R.Ilari, A.

(2017) J Enzyme Inhib Med Chem 32: 304-310

  • DOI: 10.1080/14756366.2016.1250755
  • Primary Citation of Related Structures:  
    5EBK

  • PubMed Abstract: 
  • The study presented here aimed at identifying a new class of compounds acting against Leishmania parasites, the causative agent of Leishmaniasis. For this purpose, the thioether derivatives of our in-house library have been evaluated in whole-cell screening assays in order to determine their in vitro activity against Leishmania protozoan ...

    The study presented here aimed at identifying a new class of compounds acting against Leishmania parasites, the causative agent of Leishmaniasis. For this purpose, the thioether derivatives of our in-house library have been evaluated in whole-cell screening assays in order to determine their in vitro activity against Leishmania protozoan. Among them, promising results have been achieved with compound RDS 777 (6-(sec-butoxy)-2-((3-chlorophenyl)thio)pyrimidin-4-amine) (IC 50  = 29.43 µM), which is able to impair the mechanism of the parasite defence against the reactive oxygen species by inhibiting the trypanothione reductase (TR) with high efficiency (K i 0.25 ± 0.18 µM). The X-ray structure of L. infantum TR in complex with RDS 777 disclosed the mechanism of action of this compound that binds to the catalytic site and engages in hydrogen bonds the residues more involved in the catalysis, namely Glu466', Cys57 and Cys52, thereby inhibiting the trypanothione binding and avoiding its reduction.


    Organizational Affiliation

    b Istituto di Biologia e Patologia Molecolari - CNR , and Dipartimento di Scienze Biochimiche , " Sapienza" Università di Roma , Roma , Italia.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Trypanothione reductaseA, B511Leishmania infantumMutation(s): 0 
Gene Names: TRYRLINJ_05_0350LINF_050008500
EC: 1.8.1.12
UniProt
Find proteins for A4HSF7 (Leishmania infantum)
Explore A4HSF7 
Go to UniProtKB:  A4HSF7
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.51 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 
  • Space Group: P 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 102.5α = 90
b = 102.5β = 90
c = 192γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MxCuBEdata collection
XDSdata reduction
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-10-26
    Type: Initial release
  • Version 1.1: 2017-11-01
    Changes: Database references