1G7O

NMR SOLUTION STRUCTURE OF REDUCED E. COLI GLUTAREDOXIN 2


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 21 
  • Selection Criteria: structures with the least restraint violations,structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution structure of Escherichia coli glutaredoxin-2 shows similarity to mammalian glutathione-S-transferases.

Xia, B.Vlamis-Gardikas, A.Holmgren, A.Wright, P.E.Dyson, H.J.

(2001) J.Mol.Biol. 310: 907-918

  • DOI: 10.1006/jmbi.2001.4721

  • PubMed Abstract: 
  • Glutaredoxin 2 (Grx2) from Escherichia coli is distinguished from other glutaredoxins by its larger size, low overall sequence identity and lack of electron donor activity with ribonucleotide reductase. However, catalysis of glutathione (GSH)-depende ...

    Glutaredoxin 2 (Grx2) from Escherichia coli is distinguished from other glutaredoxins by its larger size, low overall sequence identity and lack of electron donor activity with ribonucleotide reductase. However, catalysis of glutathione (GSH)-dependent general disulfide reduction by Grx2 is extremely efficient. The high-resolution solution structure of E. coli Grx2 shows a two-domain protein, with residues 1 to 72 forming a classical "thioredoxin-fold" glutaredoxin domain, connected by an 11 residue linker to the highly helical C-terminal domain, residues 84 to 215. The active site, Cys9-Pro10-Tyr11-Cys12, is buried in the interface between the two domains, but Cys9 is solvent-accessible, consistent with its role in catalysis. The structures reveal the hither to unknown fact that Grx2 is structurally similar to glutathione-S-transferases (GST), although there is no obvious sequence homology. The similarity of these structures gives important insights into the functional significance of a new class of mammalian GST-like proteins, the single-cysteine omega class, which have glutaredoxin oxidoreductase activity rather than GSH-S-transferase conjugating activity. E. coli Grx 2 is structurally and functionally a member of this new expanding family of large glutaredoxins. The primary function of Grx2 as a GST-like glutaredoxin is to catalyze reversible glutathionylation of proteins with GSH in cellular redox regulation including stress responses.


    Organizational Affiliation

    Department of Molecular Biology and Skaggs Institute of Chemical Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GLUTAREDOXIN 2
A
215Escherichia coli (strain K12)Gene Names: grxB
Find proteins for P0AC59 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AC59
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 21 
  • Selection Criteria: structures with the least restraint violations,structures with the lowest energy 
  • Olderado: 1G7O Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-07-20
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance