Author: Yasunori Watanabe; Zachary T. Berndsen; Jayna Raghwani; Gemma E. Seabright; Joel D. Allen; Jason S. McLellan; Ian A. Wilson; Thomas A. Bowden; Andrew B. Ward; Max Crispin
Title: Vulnerabilities in coronavirus glycan shields despite extensive glycosylation Document date: 2020_2_21
ID: bnnt05fn_39
Snippet: Aliquots of 30-50 μg of coronavirus spikes were denatured, reduced and alkylated as described previously 36 . Proteins were proteolytically digested with trypsin (Promega), chymotrypsin (Promega), alpha-lytic protease (Sigma-Aldrich) and Glu-C (Promega). Reaction mixtures were dried and peptides/glycopeptides were extracted using C18 Zip-tip (MerckMilipore) following the manufacturer's protocol. Samples were resuspended in 0.1% formic acid prior.....
Document: Aliquots of 30-50 μg of coronavirus spikes were denatured, reduced and alkylated as described previously 36 . Proteins were proteolytically digested with trypsin (Promega), chymotrypsin (Promega), alpha-lytic protease (Sigma-Aldrich) and Glu-C (Promega). Reaction mixtures were dried and peptides/glycopeptides were extracted using C18 Zip-tip (MerckMilipore) following the manufacturer's protocol. Samples were resuspended in 0.1% formic acid prior to analysis by liquid chromatography-mass spectrometry using an Easy-nLC 1200 system with the same amino-acid sequence, were compared to determine the relative quantitation of glycoforms at each specific N-linked glycan site.
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