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(a) Ratio of GalNAcase/GlcNAcase activity of Tyr470Phe TfHex in various concentrations of acetonitrile, acetone, t-butanol, and DMSO (0–80% v/v). (b) Residual GalNAcase activity (%) of WT TfHex Tyr470Phe TfHex in 30% v/v acetonitrile, acetone, t-butanol, and DMSO.
