1K4Q

Human Glutathione Reductase Inactivated by Peroxynitrite


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.166 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal structure of the antioxidant enzyme glutathione reductase inactivated by peroxynitrite.

Savvides, S.N.Scheiwein, M.Bohme, C.C.Arteel, G.E.Karplus, P.A.Becker, K.Schirmer, R.H.

(2002) J Biol Chem 277: 2779-2784

  • DOI: 10.1074/jbc.M108190200
  • Primary Citation of Related Structures:  
    1K4Q

  • PubMed Abstract: 
  • As part of our studies on the nitric oxide-related pathology of cerebral malaria, we show that the antioxidative enzyme glutathione reductase (GR) is inactivated by peroxynitrite, with GR from the malarial parasite Plasmodium falciparum being more se ...

    As part of our studies on the nitric oxide-related pathology of cerebral malaria, we show that the antioxidative enzyme glutathione reductase (GR) is inactivated by peroxynitrite, with GR from the malarial parasite Plasmodium falciparum being more sensitive than human GR. The crystal structure of modified human GR at 1.9-A resolution provides the first picture of protein inactivation by peroxynitrite and reveals that this is due to the exclusive nitration of 2 Tyr residues (residues 106 and 114) at the glutathione disulfide-binding site. The selective nitration explains the impairment of binding the peptide substrate and thus the nearly 1000-fold decrease in catalytic efficiency (k(cat)/K(m)) of glutathione reductase observed at physiologic pH. By oxidizing the catalytic dithiol to a disulfide, peroxynitrite itself can act as a substrate of unmodified and bisnitrated P. falciparum glutathione reductase.


    Organizational Affiliation

    Department of Biochemistry and Biophysics, Oregon State University, Corvallis, Oregon 97331-7305, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Glutathione ReductaseA461Homo sapiensMutation(s): 2 
Gene Names: GSRGLURGRD1
EC: 1.6.4.2 (PDB Primary Data), 1.8.1.7 (UniProt)
Find proteins for P00390 (Homo sapiens)
Explore P00390 
Go to UniProtKB:  P00390
NIH Common Fund Data Resources
PHAROS  P00390
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FAD
Query on FAD

Download CCD File 
A
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
NIY
Query on NIY
AL-PEPTIDE LINKINGC9 H10 N2 O5TYR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.166 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 119.75α = 90
b = 63.65β = 58.42
c = 84.71γ = 90
Software Package:
Software NamePurpose
R-AXISdata collection
SCALEPACKdata scaling
X-PLORmodel building
X-PLORrefinement
R-AXISdata reduction
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-01-30
    Type: Initial release
  • Version 1.1: 2007-10-16
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Atomic model, Derived calculations, Version format compliance