Abstract
AbstractEnzymatic synthesis of glycans, as an alternative to classical chemical synthesis, is of great interest due to the exquisite stereospecificity and improved processivity and regioselectivity of the biological catalysts, and for the possibility of using reagents less toxic to the environment. Nonetheless, the limitations intrinsic to the natural enzymes promoting sugar synthesis, namely glycoside hydrolases and glycosyltransferases, have prompted efforts to engineer the former catalysts, obtaining glycosynthases that promote the synthesis of oligosaccharides, polysaccharides, and glycoconjugates in quantitative yields from inexpensive substrates. In this chapter we survey methods that exploit glycosidases and glycosynthases to allow the efficient and reliable preparation of glycans of synthetic relevance.
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