the substrate. Specifically, instead of canonical hydroxylation, these enzymes can catalyze non-native nitrile group installation when an azido group is introduced. The reaction is likely to proceed through C-H bond activation by an Fe(IV)-oxo species, followed by azido-directed C≡N bond formation. These results offer a unique opportunity to investigate and expand the reaction repertoire of Fe/2OG enzymes
三种单核非血红素
铁和 2-酮
戊二酸依赖性酶,l-Ile
4-羟化酶、l-Leu 5-羟化酶和多氧辛二羟化酶,先前已报道可催化 l-
异亮氨酸、l-亮
氨酸和 l-α-
氨基的羟基化-δ-
氨基甲酰基羟基
戊酸(ACV)。在这项研究中,我们表明这些酶可以容纳亮
氨酸异构体并催化区域特异性羟基化。在这些结果的基础上,作为概念验证,我们证明了反应的结果可以通过在基板内安装辅助组来重定向。具体来说,当引入
叠氮基时,这些酶可以催化非天然腈基的安装,而不是经典的羟基化。该反应很可能通过 Fe(IV)-氧类物质激活 CH 键进行,然后形成
叠氮导向的 C≡N 键。