Enantioselectivity of Haloalkane Dehalogenases and its Modulation by Surface Loop Engineering
作者:Zbynek Prokop、Yukari Sato、Jan Brezovsky、Tomas Mozga、Radka Chaloupkova、Tana Koudelakova、Petr Jerabek、Veronika Stepankova、Ryo Natsume、Jan G. E. van Leeuwen、Dick B. Janssen、Jan Florian、Yuji Nagata、Toshiya Senda、Jiri Damborsky
DOI:10.1002/anie.201001753
日期:2010.8.16
In the loop: Engineering of the surface loop in haloalkane dehalogenases affects their enantiodiscrimination behavior. The temperature dependence of the enantioselectivity (lnE versus 1/T) of β‐bromoalkanes by haloalkane dehalogenases is reversed (red data points) by deletion of the surface loop; the selectivity switches back when an additional single‐point mutation is made. This behavior is not observed
在回路中:卤代烷脱卤酶表面回路的工程设计会影响其对映异构行为。卤代烷脱卤酶对β-溴代烷烃的对映选择性(ln E对1 / T)的温度依赖性通过消除表面环而被逆转(红色数据点)。当进行其他单点突变时,选择性会切换回去。对于α-溴代酸酯未观察到此行为。