5OLW

5-fluorotryptophan labeled beta-phosphoglucomutase in an open conformation


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.28 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.207 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Observing enzyme ternary transition state analogue complexes by19F NMR spectroscopy.

Ampaw, A.Carroll, M.von Velsen, J.Bhattasali, D.Cohen, A.Bowler, M.W.Jakeman, D.L.

(2017) Chem Sci 8: 8427-8434

  • DOI: https://doi.org/10.1039/c7sc04204c
  • Primary Citation of Related Structures:  
    5OLW, 5OLX, 5OLY

  • PubMed Abstract: 

    Ternary transition state analogue (TSA) complexes probing the isomerization of β-d-glucose 1-phosphate (G1P) into d-glucose 6-phosphate (G6P) catalyzed by catalytically active, fluorinated (5-fluorotryptophan), β-phosphoglucomutase (βPGM) have been observed directly by 19 F NMR spectroscopy. In these complexes MgF 3 - and AlF 4 - are surrogates for the transferring phosphate. However, the relevance of these metal fluorides as TSA complexes has been queried. The 1D 19 F spectrum of a ternary TSA complex presented a molar equivalence between fluorinated enzyme, metal fluoride and non-isomerizable fluoromethylenephosphonate substrate analogue. Ring flips of the 5-fluoroindole ring remote from the active site were observed by both 19 F NMR and X-ray crystallography, but did not perturb function. This data unequivocally demonstrates that the concentration of the metal fluoride complexes is equivalent to the concentration of enzyme and ligand in the TSA complex in aqueous solution.


  • Organizational Affiliation

    Department of Chemistry , Dalhousie University , Halifax , NS , Canada B3H 4R2 . Email: david.jakeman@dal.ca.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Beta-phosphoglucomutase
A, B
227Lactococcus lactis subsp. lactis Il1403Mutation(s): 0 
Gene Names: pgmBLL0429L0001
EC: 5.4.2.6
UniProt
Find proteins for P71447 (Lactococcus lactis subsp. lactis (strain IL1403))
Explore P71447 
Go to UniProtKB:  P71447
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP71447
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.28 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.207 
  • Space Group: P 21 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.005α = 90
b = 73.971β = 90
c = 120.44γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-11-01
    Type: Initial release
  • Version 1.1: 2017-11-15
    Changes: Database references
  • Version 1.2: 2018-04-18
    Changes: Data collection, Database references
  • Version 1.3: 2024-01-17
    Changes: Data collection, Database references, Derived calculations, Refinement description