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Title: Synthesis of a fluorescent ganglioside GM1 derivative and screening of a synthetic peptide library for GM1 binding sequence motifs. Author: Röckendorf N, Bade S, Hirst TR, Gorris HH, Frey A. Journal: Bioconjug Chem; 2007; 18(2):573-8. PubMed ID: 17323913. Abstract: A ganglioside GM1 probe bearing a dark-red fluorescent dye at the sphingosine moiety of the molecule was prepared by a convenient one-pot synthesis. The labeled GM1 permitted the detection of the natural ganglioside GM1 ligand Escherichia coli heat-labile enterotoxin subunit B (EtxB) in picomole quantities on a solid support. When an epitope mapping of several ganglioside binding proteins and protein fragments was performed by screening a cellulose membrane-bound synthetic library of 64 16mer peptides with the new probe, several peptides displaying ganglioside GM1 affinity could be identified. We consider the labeled glycolipid described herein a versatile tool for manifold biochemical investigations.[Abstract] [Full Text] [Related] [New Search]