Remarkable Remote Chiral Recognition in a Reaction Mediated by a Catalytic Antibody
作者:Lawrence J. D'Souza、Benoît Gigant、Marcel Knossow、Bernard S. Green
DOI:10.1021/ja0170504
日期:2002.3.1
structures of catalytic antibody D2.3 Fab with the two enantiomers, 7D and 7L, which represent transition state analogues for the hydrolysis of the corresponding esters, 6D and 6L, were determined to better understand remarkable reactivity differences: the L-ester displayed significantly tighter binding (K(M)) and increased catalytic activity (k(cat)) with D2.3, even though the chiral center is 7 bonds distant
确定催化抗体 D2.3 Fab 与两个对映体 7D 和 7L 的晶体结构,它们代表相应酯 6D 和 6L 水解的过渡态类似物,以更好地了解显着的反应性差异:显示的 L-酯尽管手性中心距离反应中心有 7 个键,但与 D2.3 的结合显着更紧密(K(M))并增加了催化活性(k(cat))。令人惊讶的是,D2.3 结合/反应位点内的配体膦酸盐 7D 和 7L 的电子密度基本相同,突出了蛋白质相互作用对化学行为的微妙影响。