2IEG

Crystal structure of rabbit muscle glycogen phosphorylase in complex with 3,4-dihydro-2-quinolone


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.230 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Development of potent, orally active 1-substituted-3,4-dihydro-2-quinolone glycogen phosphorylase inhibitors.

Birch, A.M.Kenny, P.W.Oikonomakos, N.G.Otterbein, L.Schofield, P.Whittamore, P.R.Whalley, D.P.

(2007) Bioorg Med Chem Lett 17: 394-399

  • DOI: https://doi.org/10.1016/j.bmcl.2006.10.037
  • Primary Citation of Related Structures:  
    2IEG, 2IEI

  • PubMed Abstract: 

    A series of substituted 3,4-dihydro-2-quinolone glycogen phosphorylase inhibitors, which have potential as antidiabetic agents, is described. Initial members of the series showed good enzyme inhibitory potency but poor physical properties. Optimisation of the 1-substituent led to 2,3-dihydroxypropyl compounds which showed good in vitro potency and improved physical properties, together with good DMPK profiles and acute in vivo efficacy in a rat model. X-ray crystallographic data are presented, showing an unexpected variety of binding orientations at the dimer interface site.


  • Organizational Affiliation

    AstraZeneca, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, UK. alan.birch@astrazeneca.com


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glycogen phosphorylase, muscle form
A, B
842Oryctolagus cuniculusMutation(s): 0 
EC: 2.4.1.1
UniProt
Find proteins for P00489 (Oryctolagus cuniculus)
Explore P00489 
Go to UniProtKB:  P00489
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00489
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.230 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 114.12α = 90
b = 125.156β = 90
c = 128.387γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
ADSCdata collection
MOSFLMdata reduction
CCP4data scaling
AMoREphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2006-12-26
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance