Efficient Production of Flavonoid Glucuronides in <i>Escherichia coli</i> Using Flavonoid <i>O</i>-Glucuronosyltransferases Characterized from <i>Marchantia polymorpha</i>
作者:Ni-Hong Du、Rui-Lin Xiong、Ting-Ting Zhu、Xin-Yan Liu、Jiao-Zhen Zhang、Jie Fu、Hai-Long Wang、Hong-Xiang Lou、Ai-Xia Cheng
DOI:10.1021/acs.jnatprod.3c00880
日期:2024.2.23
polymorpha contains various flavone glucuronides with cardiovascular-promoting effects and anti-inflammatory properties. However, the related glucuronosyltransferases have not yet been reported. In this study, two bifunctional UDP-glucuronic acid/UDP-glucose:flavonoid glucuronosyltransferases/glucosyltransferases, MpUGT742A1 and MpUGT736B1, were identified from M. polymorpha. Extensive enzymatic assays
作为典型地钱,地钱含有多种具有促进心血管作用和抗炎特性的黄酮葡萄糖苷酸。但相关的葡萄糖醛酸转移酶尚未见报道。在本研究中,从地钱中鉴定出两种双功能UDP-葡萄糖醛酸/UDP-葡萄糖:黄酮类葡萄糖醛酸基转移酶/葡萄糖基转移酶,MpUGT742A1和MpUGT736B1。广泛的酶测定发现,MpUGT742A1 和 MpUGT736B1 对黄酮、黄酮醇和黄烷酮表现出有效的葡萄糖醛酸化活性,并且在位置 3、6、7、3' 和 4' 处表现出混杂的区域选择性。这些酶催化产生多种具有药用价值的黄酮类葡萄糖醛酸苷,包括芹菜素-7- O-葡萄糖醛酸苷和灯盏花素-7- O-葡萄糖醛酸苷。利用MpUGT736B1,通过放大酶催化制备了芹菜素-4'- O-葡萄糖醛酸苷和芹菜素-7,4'-二-O-葡萄糖醛酸苷,并通过核磁共振波谱进行了结构鉴定。 MpUGT742A1 还使用 UDP-葡萄糖作为糖供体在黄烷酮的 7-OH