ino acids. It promotes the PLP-dependent aldol condensation of glycine with a range of aromatic aldehydes. The desired products were obtained with complete stereocontrol at C(alpha) (ee>99%, D) and moderate to high selectivity at C(beta) (up to 97% de). The designed enzyme is thus similar to natural d-threonine aldolases in its substrate specificity and stereoselectivity. Moreover, its ability to utilize
评价丙
氨酸消旋酶的Y265A突变体(alrY265A)作为合成β-羟基-
α-氨基酸的催化剂。它促进甘
氨酸与一系列芳族醛的PLP依赖性醛醇缩合反应。获得具有在Cα(ee> 99%,D)的完全立体控制和在Cβ(至多97%de)的中等至高选择性的所需产物。因此,设计的酶在底物特异性和立体选择性方面类似于天然的d-苏
氨酸
醛缩酶。而且,其利用丙
氨酸作为替代供体的能力表明了其用于生产
生物活性化合物的潜在用途的扩大范围。