Position 228 in Paenibacillus macerans cyclodextrin glycosyltransferase is critical for 2-O-d-glucopyranosyl-l-ascorbic acid synthesis
Keywords: Cyclodextrin glycosyltransferase (CGTase); l-ascorbic acid (L-AA); β-cyclodextrin (β-CD); 2-O-d-glucopyranosyl-l-ascorbic acid (AA-2G); Site-directed mutagenesis;