2X50

Crystal structure of Trypanothione reductase from Leishmania infantum in complex with NADPH and silver


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.231 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Inhibitory Effect of Silver Nanoparticles on Trypanothione Reductase Activity and Leishmania Infantum Proliferation

Baiocco, P.Colotti, G.Ilari, A.

(2011) ACS Med Chem Lett 2: 230

  • DOI: https://doi.org/10.1021/ml1002629
  • Primary Citation of Related Structures:  
    2X50

  • PubMed Abstract: 

    In Leishmania the glutathione/glutathione reductase eukaryotic redox sys-tem is replaced by the unique trypanothione/trypanothione reductase (TR) system. In vitro, silver is a more effective TR inhibitor than antimony, the first line drug against leishmaniasis in most endemic countries, and its mechanism of inhibition is similar to that of Sb(III). In particular, silver binds with high affinity to the catalytic triad Cys52, Cys57, and His461', thereby inhibiting TR. Here, Ag(0) activity was tested on the promastigote and amastigote stages of Leishmania infantum using a drug-delivery system consisting in Ag(0) nanoparticles encapsulated by ferritin molecules (PfFt-AgNPs). These were able to induce an antiproliferative effect on the parasites at metal concentrations lower than those used with antimony.


  • Organizational Affiliation

    Institute of Molecular Biology and Pathology CNR, and Department of Biochemical Sciences, Sapienza University of Roma , P.le A. Moro 5, 00185 Rome, Italy.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
TRYPANOTHIONE REDUCTASE
A, B
510Leishmania infantumMutation(s): 0 
EC: 1.8.1.12
UniProt
Find proteins for A4HSF7 (Leishmania infantum)
Explore A4HSF7 
Go to UniProtKB:  A4HSF7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA4HSF7
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
FAD
Query on FAD

Download Ideal Coordinates CCD File 
C [auth A],
H [auth B]
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
NDP
Query on NDP

Download Ideal Coordinates CCD File 
D [auth A],
K [auth B]
NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
C21 H30 N7 O17 P3
ACFIXJIJDZMPPO-NNYOXOHSSA-N
AG
Query on AG

Download Ideal Coordinates CCD File 
E [auth A],
F [auth A],
I [auth B],
J [auth B]
SILVER ION
Ag
FOIXSVOLVBLSDH-UHFFFAOYSA-N
SO4
Query on SO4

Download Ideal Coordinates CCD File 
G [auth A],
L [auth B]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.231 
  • Space Group: P 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 102.323α = 90
b = 102.323β = 90
c = 193.561γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
Mphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-01-12
    Type: Initial release
  • Version 1.1: 2011-11-16
    Changes: Database references, Derived calculations, Version format compliance
  • Version 1.2: 2014-06-18
    Changes: Database references
  • Version 1.3: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description