Efficient synthesis of ponasterone A by recombinant Escherichia coli harboring the glycosyltransferase GTBP1 with in situ product removal

A glycosyltransferase GTBP1 from Bacillus pumilus BF1 was isolated. Efficient production of ponasterone A was achieved by the recombinant E. coli/gtBP1 in a biphasic system with a molar yield of 92.7%. This in situ product removal provided the “driving force” for shifting the reaction equilibrium towards the synthesis of the product.