Cu
<sup>II</sup>
‐Containing 1‐Aminocyclopropane Carboxylic Acid Oxidase Is an Efficient Stereospecific Diels–Alderase
作者:Wadih Ghattas、Virginie Dubosclard、Sybille Tachon、Morane Beaumet、Régis Guillot、Marius Réglier、A. Jalila Simaan、Jean‐Pierre Mahy
DOI:10.1002/anie.201909407
日期:2019.10.7
aim to catalyze reactions that are rarely, if ever, catalyzed by natural enzymes. We discovered that 1-aminocyclopropane carboxylic acid oxidase reconstituted with CuII served as an efficient artificial Diels-Alderase. The kinetic parameters of the catalysis of the cycloaddition of cyclopentadiene and 2-azachalcone were determined (KM =230 μm, kapp =3 h-1 ), which gave access to reaction conditions that
在发展生态友好化学的背景下,人造酶现在被认为是合成的有前途的工具。制备它们的目的尤其是催化天然酶很少催化的反应。我们发现,用CuII重构的1-氨基环丙烷羧酸氧化酶可作为一种有效的人造Diels-Alderase。确定了环戊二烯和2-氮杂十二烯酮的环加成反应的动力学参数(KM = 230μm,kapp = 3 h-1),这使反应条件可获得定量收率和(99S)ee的> 99%ee。 ,2R,3R,4R)产物异构体。这种前所未有的性能通过分子建模得到了合理化,因为在酶的活性位点仅可能有一个2-氮杂双烯酮的对接姿势,而这是导致(1S,2R,3R,