A convenient synthetic route to (2<i>S</i>,4<i>S</i>)-methylproline and its exploration for protein engineering of thioredoxin
作者:Andrea Caporale、Jennie O′ Loughlin、Yannick Ortin、Marina Rubini
DOI:10.1039/d2ob01011a
日期:——
4-Substituted prolines, especially 4-fluoroprolines, have been widely used in protein engineering and design. Here, we report a robust and stereoselective approach for the synthesis of (2S,4S)-methylproline starting from (2S)-pyroglutamic acid. Incorporation studies with both (2S,4R)- and (2S,4S)-methylproline into the Trx1P variant of the model protein thioredoxin of E. coli show that the stereochemistry
4-取代脯氨酸,尤其是4-氟脯氨酸,已广泛用于蛋白质工程和设计。在这里,我们报告了一种从 (2 S )-焦谷氨酸开始合成 (2 S ,4 S )-甲基脯氨酸的稳健且立体选择性的方法。将 (2 S ,4 R )- 和 (2 S ,4 S )-甲基脯氨酸掺入大肠杆菌模型蛋白硫氧还蛋白的 Trx1P 变体中的研究表明,4-甲基的立体化学可能是一个关键的决定因素在这种蛋白质的核糖体合成过程中成功掺入。