In Vitro Reconstitution of OxyC Activity Enables Total Chemoenzymatic Syntheses of Vancomycin Aglycone Variants
作者:Clarissa C. Forneris、Mohammad R. Seyedsayamdost
DOI:10.1002/anie.201802856
日期:2018.7.2
final crosslink, however, a biaryl bond thought to be installed by OxyC, has remained elusive. We report the in vitro reconstitution of the OxyC reaction and formation of the first carbon–carbon crosslink in any glycopeptide antibiotic. Using a cascade sequence, in which the peptide substrate was incubated with the Oxy enzymes in turn, we completed the chemoenzymatic synthesis of a vancomycin aglycone
万古霉素的生物活性通过三个芳族交联键实现,其生物合成已成为二十年来研究的一个活跃领域。已显示两种细胞色素P450酶OxyB和OxyA在所谓的X结构域的帮助下引入双芳基醚键。然而,最终的交联仍然是难以捉摸的,据认为是由OxyC安装的联芳基键。我们报道了在任何糖肽抗生素中OxyC反应的体外重构和第一个碳-碳交联的形成。使用级联序列,其中肽底物依次与Oxy酶一起孵育,我们完成了万古霉素糖苷配体变体的化学酶促合成。此方法还用于生成在残基4(am衍生物的前体)上带有硫代酰胺键的新类似物,对抗万古霉素的病原体有效。我们的结果为使用天然金属酶创造治疗性万古霉素衍生物奠定了基础。