GPI-anchored Protein Cleavage in the Regulation of Transmembrane Signals

  • Frances J. Sharom
  • Galina Radeva
Part of the Subcellular Biochemistry book series (SCBI, volume 37)


The structure of covalently-linked glycosylphosphatidylinositol (GPI) anchors of membrane proteins displayed on the cell surface is described. Evidence of how the GPI-anchors are sorted into membrane rafts in the plasma membrane is reviewed. Proteins are released by hydrolysis of the linkage to the GPI anchor and phospholipases from different sources involved in this process are characterised. The regulation of protein conformation and function resulting from phospholipase cleavage of the GPI anchor is discussed in the context of its role in signal transduction by insulin. In this signalling system, re-distribution of critical membrane components, including GPI-anchored proteins and non-receptor tyrosine kinases, between different raft domains appears to play a central role in the signal transduction pathway.


Lipid Raft Membrane Raft Variant Surface Glycoprotein Raft Domain Insulin Signalling Cascade 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media New York 2004

Authors and Affiliations

  • Frances J. Sharom
    • 1
  • Galina Radeva
    • 1
  1. 1.Department of Chemistry and BiochemistryUniversity of GuelphGuelphCanada

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