Structural highlights
FunctionNTD_LACLE Catalyzes the cleavage of the glycosidic bond of 2'-deoxyribonucleosides and the transfer of the deoxyribosyl moiety to an acceptor purine or pyrimidine base.[1] [2] Publication Abstract from PubMedNucleosides are pervasive building blocks that are found throughout nature and used extensively in medicinal chemistry and biotechnology. However, the preparation of base-modified analogues using conventional synthetic methodology poses challenges in scale-up and purification. In this work, an integrated approach involving structural analysis, screening and reaction optimization, is established to prepare 2'-deoxyribonucleoside analogues catalysed by the type II nucleoside 2'-deoxyribosyltransferase from Lactobacillus leichmannii (LlNDT-2). Structural analysis in combination with substrate profiling, identified the constraints on pyrimidine and purine acceptor bases by LlNDT2. A solvent screen identifies pure water as a suitable solvent for the preparation of high value purine and pyrimidine 2'-deoxyribonucleoside analogues on a gram scale under optimized reaction conditions. This approach provides the basis to establish a convergent, step-efficient chemoenzymatic platform for the preparation of high value 2'-deoxyribonucleosides. Gram-scale enzymatic synthesis of 2'-deoxyribonucleoside analogues using nucleoside transglycosylase-2.,Salihovic A, Ascham A, Taladriz-Sender A, Bryson S, Withers JM, McKean IJW, Hoskisson PA, Grogan G, Burley GA Chem Sci. 2024 Aug 27;15(37):15399-407. doi: 10.1039/d4sc04938a. PMID:39234214[3] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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