Enantioselective synthesis of non-natural amino acids using phenylalanine dehydrogenases modified by site-directed mutagenesis
作者:Patricia Busca、Francesca Paradisi、Eamonn Moynihan、Anita R. Maguire、Paul C. Engel
DOI:10.1039/b406364c
日期:——
The substrate scope of three mutants of phenylalanine dehydrogenase as biocatalysts for the transformation of a series of 2-oxo acids, structurally related to phenylpyruvic acid, to the analogous α-amino acids, non-natural analogues of phenylalanine, has been investigated. The mutant enzymes are more tolerant than the wild type enzyme of the non-natural substrates, especially those with substituents at the 4-position on the phenyl ring. Excellent enantiocontrol resulted in all cases.
三个变种的苯丙氨酸脱氢酶作为生物催化剂,用于将一系列与苯丙酮酸结构相关的2-氧酸转化为相应的α-氨基酸,即苯丙氨酸的非天然类似物,其底物范围已被研究。这些变种酶比野生型酶更能容忍非天然底物,特别是那些在苯环的4-位有取代基的底物。在所有情况下,都表现出了优秀的对映选择性。