The Journal of Lipid Research, Vol. 40, 160-163, January 1999
Copyright © 1999 by Lipid Research, Inc.
A simple, nonenzymatic method for desialylating polysialylated ganglio-N-tetraose series gangliosides to produce GM1
Cara-Lynne Schengrunda and
Pavol Kovácb
a Department of Biochemistry and Molecular Biology, The Pennsylvania State University College of Medicine, Hershey, PA 17033
b National Institute of Diabetes, Digestive and Kidney Diseases, National Institutes of Health, Building 8A, Bethesda, MD 20892
Correspondence to:
Cara-Lynne Schengrund
Dowex-50W-H+ was used to catalyze the highly selective desialylation of polysialylated ganglio-N-tetraose series gangliosides to yield primarily GM1. High performance thin-layer chromatographic analysis of recovered lipid indicated that 6070% of the recovered ganglioside was GM1. Identification of the major product as GM1 was confirmed by proton NMR spectra and lack of sialic acid release by Vibrio cholerae sialidase.Schengrund, C-L., and P. Kovác. A simple, nonenzymatic method for desialylating polysialylated ganglio-N-tetraose series gangliosides to produce GM1. J. Lipid Res. 1999. 40: 160163.
Supplementary key words:
ganglioside GM1, Dowex-H+, sialic acid