2HQM

Crystal Structure of Glutathione Reductase Glr1 from the Yeast Saccharomyces cerevisiae


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.202 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of glutathione reductase Glr1 from the yeast Saccharomyces cerevisiae.

Yu, J.Zhou, C.Z.

(2007) Proteins 68: 972-979

  • DOI: 10.1002/prot.21354

  • PubMed Abstract: 
  • Yeast glutathione (GSH) reductase Glr1 is a dimeric flavo-oxidoreductase involved in cytoplasmic and mitochondrial redox regulatory systems. It reduces the oxidized GSH GSSG to the reduced form, GSH with NADPH as electron donor and FAD as coenzyme. C ...

    Yeast glutathione (GSH) reductase Glr1 is a dimeric flavo-oxidoreductase involved in cytoplasmic and mitochondrial redox regulatory systems. It reduces the oxidized GSH GSSG to the reduced form, GSH with NADPH as electron donor and FAD as coenzyme. Crystal structures and enzymatic mechanisms of GSH reductases from Escherichia coli and Homo sapiens have been well investigated, whereas the structural properties of yeast Glr1 remain unknown. Herein, we overexpressed Saccharomyces cerevisiae Glr1 in Pichia pastoris GS115 and determined its crystal structure at 2.40 A resolution. Although the overall structure and the active site are much conserved, obvious variety was found at the interface of Glr1 monomers when superimposed against the homolog from E. coli or human. The nonconserved C239 is exposed to the solvent and accessible to GSH or GSSG enriched in a microenvironment around the Glr1 molecules, leading to the partial and transient glutathionylation, as primarily identified from the 2Fo-Fc electron density map and further confirmed by biochemical assays. Meanwhile N278 at the vicinity of NADP-binding pocket was artificially glycosylated when heterogeneously overexpressed in P. pastoris. The highly motile oligosaccharide chain linked to N278 of the recombinant Glr1 interferes with the entry of NADPH, which results in a dramatic increase of Km for NAPDH and a significant decrease of turnover number, when compared with the native protein.


    Organizational Affiliation

    Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei Anhui 230027, People's Republic of China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Glutathione reductase
A, B
479Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: GLR1
EC: 1.8.1.7
Find proteins for P41921 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P41921
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A, B
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
FAD
Query on FAD

Download SDF File 
Download CCD File 
A, B
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
GSH
Query on GSH

Download SDF File 
Download CCD File 
A, B
GLUTATHIONE
C10 H17 N3 O6 S
RWSXRVCMGQZWBV-WDSKDSINSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, B
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.202 
  • Space Group: P 42
Unit Cell:
Length (Å)Angle (°)
a = 116.966α = 90.00
b = 116.966β = 90.00
c = 85.242γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
AUTOMARdata reduction
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2006-07-19 
  • Released Date: 2007-06-12 
  • Deposition Author(s): Yu, J., Zhou, C.Z.

Revision History 

  • Version 1.0: 2007-06-12
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance