Experimental Data Snapshot

  • Resolution: 2.70 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.241 
  • R-Value Observed: 0.241 

wwPDB Validation   3D Report Full Report

Ligand Structure Quality Assessment 

This is version 1.4 of the entry. See complete history


Crystal structure of a truncated mutant of glucose-fructose oxidoreductase shows that an N-terminal arm controls tetramer formation.

Lott, J.S.Halbig, D.Baker, H.M.Hardman, M.J.Sprenger, G.A.Baker, E.N.

(2000) J Mol Biol 304: 575-584

  • DOI: https://doi.org/10.1006/jmbi.2000.4245
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    N-terminal or C-terminal arms that extend from folded protein domains can play a critical role in quaternary structure and other intermolecular associations and/or in controlling biological activity. We have tested the role of an extended N-terminal arm in the structure and function of a periplasmic enzyme glucose-fructose oxidoreductase (GFOR) from Zymomonas mobilis. We have determined the crystal structure of the NAD(+) complex of a truncated form of the enzyme, GFORDelta, in which the first 22 residues of the N-terminal arm of the mature protein have been deleted. The structure, refined at 2.7 A resolution (R(cryst)=24.1%, R(free)=28.4%), shows that the truncated form of the enzyme forms a dimer and implies that the N-terminal arm is essential for tetramer formation by wild-type GFOR. Truncation of the N-terminal arm also greatly increases the solvent exposure of the cofactor; since GFOR activity is dependent on retention of the cofactor during the catalytic cycle we conclude that the absence of GFOR activity in this mutant results from dissociation of the cofactor. The N-terminal arm thus determines the quaternary structure and the retention of the cofactor for GFOR activity and during translocation into the periplasm. The structure of GFORDelta also shows how an additional mutation, Ser64Asp, converts the strict NADP(+) specificity of wild-type GFOR to a dual NADP(+)/NAD(+) specificity.

  • Organizational Affiliation

    School of Biological Sciences, University of Auckland, Auckland, New Zealand.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D
352Zymomonas mobilisMutation(s): 1 
Find proteins for Q07982 (Zymomonas mobilis subsp. mobilis (strain ATCC 31821 / ZM4 / CP4))
Explore Q07982 
Go to UniProtKB:  Q07982
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ07982
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.70 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.241 
  • R-Value Observed: 0.241 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.71α = 64.53
b = 91.46β = 84.45
c = 98.92γ = 75.28
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-12-04
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-11-03
    Changes: Database references, Derived calculations
  • Version 1.4: 2024-02-07
    Changes: Data collection