Enzymatic Synthesis of Therapeutic Nucleosides using a Highly Versatile Purine Nucleoside 2’‐DeoxyribosylTransferase from<i>Trypanosoma brucei</i>
作者:Elena Pérez、Pedro A. Sánchez‐Murcia、Justin Jordaan、María Dolores Blanco、José Miguel Mancheño、Federico Gago、Jesús Fernández‐Lucas
DOI:10.1002/cctc.201800775
日期:2018.10.9
selected as the best derivative (4200 IU/g, activity recovery of 22 %), and could be easily recaptured and recycled for >25 reactions with negligible loss of activity. Finally, MTbPDT3 was successfully employed in the expedient synthesis of several nucleoside analogues. Taken together, our results support the notion that TbPDT has good potential as an industrial biocatalyst for the synthesis of a wide range
与多步化学方法相比,使用酶来合成核苷类似物具有多个优势,包括化学,区域和立体选择性以及较温和的反应条件。本文报道了来自布鲁氏锥虫的嘌呤核苷2'-脱氧核糖基转移酶(PDT)的生产,表征和利用。Tb PDT是一种二聚体,不仅在很宽的温度范围(50–70°C),pH(4–7)和离子强度(0–500 mM NaCl)范围内都显示出出色的活性和稳定性,而且在高温下具有非凡的高稳定性碱性条件(pH 8-10)。bPDT被证明可以熟练地合成许多治疗性核苷,包括去羟肌苷,维达拉滨,克拉屈滨,氟达拉滨和奈拉拉滨。用Ala或Ser进行结构指导的Val11置换,导致变体的活性提高了2.8倍。Tb PDT也共价固定在戊二醛激活的磁性微球上。选择了M Tb PDT3作为最佳衍生物(4200 IU / g,活性回收率为22%),可以轻松地将其重新捕获和再循环用于> 25个反应,而活性损失可忽略不计。最后,男铽PDT3