期刊
SCIENCE
卷 313, 期 5791, 页码 1291-1294出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1130028
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资金
- NCI NIH HHS [CA84374, U19 CA113297] Funding Source: Medline
- NIAID NIH HHS [AI52218] Funding Source: Medline
- NIGMS NIH HHS [GM70637] Funding Source: Medline
Glycosyltransferases (GTs), an essential class of ubiquitous enzymes, are generally perceived as unidirectional catalysts. In contrast, we report that four glycosyltransferases from two distinct natural product biosynthetic pathways-calicheamicin and vancomycin-readily catalyze reversible reactions, allowing sugars and aglycons to be exchanged with ease. As proof of the broader applicability of these new reactions, more than 70 differentially glycosylated calicheamicin and vancomycin variants are reported. This study suggests the reversibility of GT-catalyzed reactions may be general and useful for generating exotic nucleotide sugars, establishing in vitro GT activity in complex systems, and enhancing natural product diversity.
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