Engineered biosynthesis of alkyne-tagged polyketides.

Engineered biosynthesis of alkyne-tagged polyketides.
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DOI:
10.1016/bs.mie.2021.11.013
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发表时间:
2022
影响因子:
--
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中科院分区:
生物学4区
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在过去的几十年里,聚酮化合物作为药物、工业产品、杀虫剂和生物探针的重要性得到了广泛的研究。标记具有生物正交功能的聚酮化合物能够实现各种应用,例如多样化,定量,可视化和作用模式阐明。末端炔基作为一种小的、稳定的、高选择性的可点击官能团,被广泛应用于天然产物的标记。炔标记的聚酮化合物的从头生物合成提供了独特的优势,即减少了来自进料双正交部分本身的背景,从而实现了用于生物正交反应的可点击官能团的原位生成。在这里,我们介绍了几种工程策略,应用终端炔生物合成机械,代表JamABC,它产生一个短的终端炔轴承脂肪酰基链上的载体蛋白,功能与不同的下游聚酮酶(PKSs)。工程III型和I型PKS的成功结果提供了适用于其他PKS的工程指南和策略,以产生用于化学和生物学应用的靶向炔标记的代谢物。
Polyketides have demonstrated their significance as therapeutics, industrial products, pesticides, and biological probes following intense study over the past decades. Tagging polyketides with a bioorthogonal functionality enables various applications such as diversification, quantification, visualization and mode-of-action elucidation. The terminal alkyne moiety, as a small, stable and highly selective clickable functionality, is widely adopted in tagging natural products. De novo biosynthesis of alkyne-tagged polyketides offers the unique advantage of reducing the background from feeding the biorthogonal moiety itself, leading to the accomplishment of in situ generation of a clickable functionality for bioorthogonal reactions. Here, we introduce several engineering strategies to apply terminal alkyne biosynthetic machinery, represented by JamABC, which produces a short terminal alkyne-bearing fatty acyl chain on a carrier protein, to functions with different downstream polyketide synthases (PKSs). Successful results in engineering type III and type I PKSs provide engineering guidelines and strategies that are applicable to additional PKSs to produce targeted alkyne-tagged metabolites for chemical and biological applications.
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