Glycosylation analysis of IgLON family proteins in rat brain by liquid chromatography and multiple-stage mass spectrometry

Biochemistry
Satsuki ItohTeruhide Yamaguchi

Abstract

IgLON family proteins, including limbic-associated membrane protein (LAMP), opioid-binding cell adhesion molecule (OBCAM), neurotrimin, and Kilon, are immunoglobulin (Ig) superfamily cell adhesion molecules. These molecules are composed of three Ig domains and a glycosylphosphatidylinositol (GPI) anchor and contain six or seven potential N-glycosylation sites. Although their glycosylations are supposed to be associated with the development of the central nervous system like other Ig superfamily proteins, they are still unknown because of difficulty in isolating individual proteins with a high degree of homology in performing carbohydrate analysis. In this study, we conducted simultaneous site-specific glycosylation analysis of rat brain IgLON proteins by liquid chromatography and multiple-stage mass spectrometry (LC-MS ( n )). The rat brain GPI-linked proteins were enriched and separated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The four proteins were extracted from the gel, and subjected to LC-MS ( n ) after proteinase digestions. A set of glycopeptide MS data, including the mass spectrum, the mass spectrum in the selected ion monitoring mode, and the product ion spectra, was selected from all data based on...Continue Reading

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Citations

Jul 24, 2018·Cell Structure and Function·Mai Handa-NarumiKazuhiro Ikenaka
Dec 30, 2014·The Journal of Biological Chemistry·Ricardo SanzAlyson E Fournier
Jul 1, 2020·Cancer Gene Therapy·Jane AntonyChiara Recchi
May 8, 2009·Analytical Chemistry·Manfred WuhrerAndré M Deelder
Jun 10, 2021·Molecular Omics·Inga MatthiesMartin R Larsen
Oct 3, 2021·Scientific Reports·Sydney FearnleyJean-François Cloutier

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