Fungal Prenyltransferase AnaPT and Its F265 Mutants Catalyze the Dimethylallylation at the Nonaromatic Carbon of Phloretin
作者:Yanzhi Yang、Linlan Tao、Yunyun Li、Ying Wu、Qianqian Ran、Dan Li、Shu-Ming Li、Xia Yu、Chun-Mao Yuan、Kang Zhou
DOI:10.1021/acs.jafc.4c00928
日期:2024.4.10
Phloretin is widely found in fruit and shows various biological activities. Here, we demonstrate the dimethylallylation, geranylation, and farnesylation, particularly the first dimethylallylation at the nonaromatic carbon of phloretin (1) by the fungal prenyltransferase AnaPT and its mutants. F265 was identified as a key amino acid residue related to dimethylallylation at the nonaromatic carbon of
根皮素广泛存在于水果中,具有多种生物活性。在这里,我们展示了真菌异戊烯基转移酶 AnaPT 及其突变体对根皮素 ( 1 ) 的非芳香碳进行的二甲基烯丙基化、香叶基化和法呢基化,特别是首次二甲基烯丙基化。 F265 被鉴定为与根皮素非芳香碳上的二甲基烯丙基化相关的关键氨基酸残基。发现突变体 AnaPT_F265D、AnaPT_F265G、AnaPT_F265P、AnaPT_F265C 和 AnaPT_F265Y 通常将异戊二烯化活性增加至1 。 AnaPT_F265G 在 C-2' 羟基处选择性催化O -香叶基化,这涉及与1的羰基的分子内氢键。 1D5、1D7–1D9、1G2、1G4和1F2七种产品在本研究之前尚未报道。 1D3–1D9、1G1–1G3和1F1–1F2 12 种化合物对 α-葡萄糖苷酶表现出潜在的抑制作用, IC 50值范围为 11.45 ± 0.87 至 193.80 ± 6