Discovery of New Fe(II)/α-Ketoglutarate-Dependent Dioxygenases for Oxidation of <scp>l</scp>-Proline
作者:Erika Tassano、Charles Moore、Solene Dussauge、Alexandra Vargas、Radka Snajdrova
DOI:10.1021/acs.oprd.1c00405
日期:2022.7.15
clustering of proteins, we predicted regio- and stereoselectivity in the hydroxylation reaction and validated this hypothesis experimentally. Two novel byproducts in the reactions with enzymes from Bacillus cereus and Streptomyces sp. were isolated, and the structures were determined to be a 3,4-epoxide and a 3,4-diol, respectively. The mechanism for the formation of the epoxide was investigated by performing
报道了新型 Fe(II)/α-酮戊二酸依赖性双加氧酶 (αKGDs) 的基因组挖掘,以扩展l-脯氨酸氧化中的酶谱。通过蛋白质的聚类,我们预测了羟基化反应中的区域选择性和立体选择性,并通过实验验证了这一假设。与蜡状芽孢杆菌和链霉菌酶反应的两种新副产物。被分离,结构分别被确定为3,4-环氧化物和3,4-二醇。通过进行18 O-标记实验来研究环氧化物的形成机理。我们建议该机制通过初始顺式进行-3-羟基化然后闭环。对亚克数量的起始材料进行生物催化步骤,而没有对条件进行任何显着优化。然而,底物浓度比通常报道的重组 P450 介导的羟基化效价高 40 倍,表明 αKGD 在制备规模上的合成潜力。