Deacylated products (lyso-Gb3 and its eight analogs) were detected using a Xevo TQD MS with an Acquity UPLC system (Waters, Milford, MA), as described previously (27 (link)). All MS parameters were optimized to achieve the highest sensitivity for lyso-Gb3 analogs. Liquid chromatography and MS parameters are summarized in Table S1. The peak areas corresponding to lyso-Gb3 and its analogs in the multiple-reaction-monitoring (MRM) chromatogram were calculated using MassLynx software (Waters).
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