1EGO

NMR STRUCTURE OF OXIDIZED ESCHERICHIA COLI GLUTAREDOXIN: COMPARISON WITH REDUCED E. COLI GLUTAREDOXIN AND FUNCTIONALLY RELATED PROTEINS


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 

wwPDB Validation 3D Report Full Report


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Literature

NMR structure of oxidized Escherichia coli glutaredoxin: comparison with reduced E. coli glutaredoxin and functionally related proteins.

Xia, T.H.Bushweller, J.H.Sodano, P.Billeter, M.Bjornberg, O.Holmgren, A.Wuthrich, K.

(1992) Protein Sci. 1: 310-321

  • DOI: 10.1002/pro.5560010302
  • Primary Citation of Related Structures:  1GRX

  • PubMed Abstract: 
  • The determination of the NMR structure of oxidized Escherichia coli glutaredoxin in aqueous solution is described, and comparisons of this structure with that of reduced E. coli glutaredoxin and the related proteins E. coli thioredoxin and T4 glutare ...

    The determination of the NMR structure of oxidized Escherichia coli glutaredoxin in aqueous solution is described, and comparisons of this structure with that of reduced E. coli glutaredoxin and the related proteins E. coli thioredoxin and T4 glutaredoxin are presented. Based on nearly complete sequence-specific 1H-NMR assignments, 804 nuclear Overhauser enhancement distance constraints and 74 dihedral angle constraints were obtained as the input for the structure calculations, for which the distance geometry program DIANA was used followed by simulated annealing with the program X-PLOR. The molecular architecture of oxidized glutaredoxin is made up of three helices and a four-stranded beta-sheet. The three-dimensional structures of oxidized and the recently described reduced glutaredoxin are very similar. Quantitative analysis of the exchange rates of 34 slowly exchanging amide protons from corresponding series of two-dimensional [15N,1H]-correlated spectra of oxidized and reduced glutaredoxin showed close agreement, indicating almost identical hydrogen-bonding patterns. Nonetheless, differences in local dynamics involving residues near the active site and the C-terminal alpha-helix were clearly manifested. Comparison of the structure of E. coli glutaredoxin with those of T4 glutaredoxin and E. coli thioredoxin showed that all three proteins have a similar overall polypeptide fold. An area of the protein surface at the active site containing Arg 8, Cys 11, Pro 12, Tyr 13, Ile 38, Thr 58, Val 59, Pro 60, Gly 71, Tyr 72, and Thr 73 is proposed as a possible site for interaction with other proteins, in particular ribonucleotide reductase. It was found that this area corresponds to previously proposed interaction sites in T4 glutaredoxin and E. coli thioredoxin. The solvent-accessible surface area at the active site of E. coli glutaredoxin showed a general trend to increase upon reduction. Only the sulfhydryl group of Cys 11 is exposed to the solvent, whereas that of Cys 14 is buried and solvent inaccessible.


    Related Citations: 
    • Characterization of Homogeneous Recombinant Glutaredoxin from Escherichia Coli: Purification from an Inducible Lambda-P(L) Expression System and Properties of a Novel Elongated Form Protein Expression and Purification
      Bjornberg, O.,Holmgren, A.
      (1991) Protein Expr.Purif. 2: 287
    • Nuclear Magnetic Resonance Studies of Recombinant Escherichia Coli Glutaredoxin: Sequence-Specific Assignments and Secondary Structure Determination for the Oxidized Form
      Sodano, P.,Chary, K.V.R.,Bjornberg, O.,Holmgren, A.,Kren, B.,Fuchs, J.A.,Wuthrich, K.
      (1991) Eur.J.Biochem. 200: 369
    • Sequence-Specific 1H N.M.R. Assignments and Determination of the Three-Dimensional Structure of Reduced Escherichia Coli Glutaredoxin
      Sodano, P.,Xia, T.-H.,Bushweller, J.H.,Bjornberg, O.,Holmgren, A.,Billeter, M.,Wuthrich, K.
      (1991) J.Mol.Biol. 221: 1311


    Organizational Affiliation

    Institut für Molekularbiologie und Biophysik, Eidgenössische Technische Hochschule-Hönggerberg, Zürich, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GLUTAREDOXIN
A
85Escherichia coli (strain K12)Gene Names: grxA (grx)
Find proteins for P68688 (Escherichia coli (strain K12))
Go to UniProtKB:  P68688
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 
  • Olderado: 1EGO Olderado
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORphasing
X-PLORrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1993-10-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance