New inhibitors of glycogen phosphorylase as potential antidiabetic agents

L. Somsák, K. Czifrák, M. Tóth, É Bokor, E. D. Chrysina, K. M. Alexacou, J. M. Hayes, C. Tiraidis, E. Lazoura, D. D. Leonidas, S. E. Zographos, N. G. Oikonomakos

Research output: Review article

124 Citations (Scopus)


The protein glycogen phosphorylase has been linked to type 2 diabetes, indicating the importance of this target to human health. Hence, the search for potent and selective inhibitors of this enzyme, which may lead to antihyperglycaemic drugs, has received particular attention. Glycogen phosphorylase is a typical allosteric protein with five different ligand binding sites, thus offering multiple opportunities for modulation of enzyme activity. The present survey is focused on recent new molecules, potential inhibitors of the enzyme. The biological activity can be modified by these molecules through direct binding, allosteric effects or other structural changes. Progress in our understanding of the mechanism of action of these inhibitors has been made by the determination of high-resolution enzyme inhibitor structures (both muscle and liver). The knowledge of the three-dimensional structures of protein-ligand complexes allows analysis of how the ligands interact with the target and has the potential to facilitate structure-based drug design. In this review, the synthesis, structure determination and computational studies of the most recent inhibitors of glycogen phosphorylase at the different binding sites are presented and analyzed.

Original languageEnglish
Pages (from-to)2933-2983
Number of pages51
JournalCurrent medicinal chemistry
Issue number28
Publication statusPublished - dec. 1 2008

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Medicine
  • Pharmacology
  • Drug Discovery
  • Organic Chemistry

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  • Cite this

    Somsák, L., Czifrák, K., Tóth, M., Bokor, É., Chrysina, E. D., Alexacou, K. M., Hayes, J. M., Tiraidis, C., Lazoura, E., Leonidas, D. D., Zographos, S. E., & Oikonomakos, N. G. (2008). New inhibitors of glycogen phosphorylase as potential antidiabetic agents. Current medicinal chemistry, 15(28), 2933-2983.