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  • Title: On the Catalytic Activity of a GT1 Family Glycosyltransferase from Streptomyces venezuelae ISP5230.
    Author: Forget SM, Shepard SB, Soleimani E, Jakeman DL.
    Journal: J Org Chem; 2019 Sep 20; 84(18):11482-11492. PubMed ID: 31429289.
    Abstract:
    GT1 family glycosyltansferase, Sv0189, from Streptomyces venezuelae ISP5230 (ATCC 10721) was characterized. The recombinantly produced protein Sv0189 possessed UDP-glycosyltransferase activity. Screening, using an assay employing unnatural nitrophenyl glycosides as activated donors, resulted in the discovery of a broad substrate scope with respect to both acceptor molecules and donor sugars. In addition to polyphenols, including anthraquinones, simple aromatics containing primary or secondary alcohols, a variety of complex natural products and synthetic drugs were glucosylated or xylosylated by Sv0189. Regioselectivity was established through the isolation and characterization of glucosylated products. Sv0189 and homologous proteins are widely distributed among Streptomyces species, and their apparent substrate promiscuity reveals potential for their development as biocatalysts for glycodiversification.
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