3GRX

NMR STRUCTURE OF ESCHERICHIA COLI GLUTAREDOXIN 3-GLUTATHIONE MIXED DISULFIDE COMPLEX, 20 STRUCTURES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

NMR structure of Escherichia coli glutaredoxin 3-glutathione mixed disulfide complex: implications for the enzymatic mechanism.

Nordstrand, K.slund, F.Holmgren, A.Otting, G.Berndt, K.D.

(1999) J.Mol.Biol. 286: 541-552


  • PubMed Abstract: 
  • Glutaredoxins (Grxs) catalyze reversible oxidation/reduction of protein disulfide groups and glutathione-containing mixed disulfide groups via an active site Grx-glutathione mixed disulfide (Grx-SG) intermediate. The NMR solution structure of the Esc ...

    Glutaredoxins (Grxs) catalyze reversible oxidation/reduction of protein disulfide groups and glutathione-containing mixed disulfide groups via an active site Grx-glutathione mixed disulfide (Grx-SG) intermediate. The NMR solution structure of the Escherichia coli Grx3 mixed disulfide with glutathione (Grx3-SG) was determined using a C14S mutant which traps this intermediate in the redox reaction. The structure contains a thioredoxin fold, with a well-defined binding site for glutathione which involves two intermolecular backbone-backbone hydrogen bonds forming an antiparallel intermolecular beta-bridge between the protein and glutathione. The solution structure of E. coli Grx3-SG also suggests a binding site for a second glutathione in the reduction of the Grx3-SG intermediate, which is consistent with the specificity of reduction observed in Grxs. Molecular details of the structure in relation to the stability of the intermediate and the activity of Grx3 as a reductant of glutathione mixed disulfide groups are discussed. A comparison of glutathione binding in Grx3-SG and ligand binding in other members of the thioredoxin superfamily is presented, which illustrates the highly conserved intermolecular interactions in this protein family.


    Related Citations: 
    • Glutaredoxin-3 from Escherichia Coli. Amino Acid Sequence, 1H and 15N NMR Assignments, and Structural Analysis
      Aslund, F.,Nordstrand, K.,Berndt, K.D.,Nikkola, M.,Bergman, T.,Ponstingl, H.,Jornvall, H.,Otting, G.,Holmgren, A.
      (1996) J.Biol.Chem. 271: 6736


    Organizational Affiliation

    Department of Medical Biochemistry and Biophysics, Karolinska Institute, S-171 77, Stockholm, Sweden.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GLUTAREDOXIN 3
A
82Escherichia coli (strain K12)Mutation(s): 2 
Gene Names: grxC (yibM)
Find proteins for P0AC62 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AC62
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GSH
Query on GSH

Download SDF File 
Download CCD File 
A
GLUTATHIONE
C10 H17 N3 O6 S
RWSXRVCMGQZWBV-WDSKDSINSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 
  • Olderado: 3GRX Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-03-30
    Type: Initial release
  • Version 1.1: 2008-03-25
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2012-01-18
    Type: Non-polymer description
  • Version 1.4: 2018-03-14
    Type: Database references, Other