Globotriaosyl ceramide receptor function - where membrane structure and pathology intersect

FEBS Letters
C A LingwoodD R Branch

Abstract

The glycosphingolipid globotriaosyl ceramide, (Galalpha1-4Galss1-4 glucosyl ceramide-Gb(3)) also known as CD77 and the P(k) blood group antigen, is bound by both verotoxins and by the HIV adhesin, gp120. Gb(3) plays an important receptor role in VT induced hemolytic uremic syndrome (HUS) and HIV infection. The organization of glycolipids, including Gb(3), into lipid rafts is central to both pathologies. The fatty acid heterogeneity within the Gb(3) lipid moiety plays a central role in assembly within such ordered domains. Differential binding of verotoxins and gp120 to such Gb(3) isoforms in model and cell membranes indicates a significant role in the eventual pathogenic outcome. HUS may provide the first example whereby membrane Gb(3) organization provides a predictor for tissue selective in vivo pathology.

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Citations

Jun 15, 2013·Histochemistry and Cell Biology·Kirsten SandvigTove Irene Klokk
Mar 16, 2012·The Journal of Biological Chemistry·Mitsumasa SaitoClifford Lingwood
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