<i>Euphorbia tirucalli</i>
β-Amyrin Synthase: Critical Roles of Steric Sizes at Val483 and Met729 and the CH-π Interaction between Val483 and Trp534 for Catalytic Action
作者:Tsutomu Hoshino、Kazuya Nakagawa、Yukari Aiba、Daichi Itoh、Chika Nakada、Yukari Masukawa
DOI:10.1002/cbic.201700368
日期:2017.11.2
tirucalli β-amyrin synthase are revealed by comparing the activities of site-directed mutants with that of the wild type. The appropriate steric sizes of the residues facilitate folding of the substrate into a chair–chair–chair–boat–boat conformation. CH–π interactions between Val and Trp confer a robust protein architecture around the A/B/C-ring formation site.
体形好!Val483,Trp534,和Met729的在功能E. tirucalli β香树脂醇合酶通过定点突变体的活性与野生型的比较揭示。残留物的适当空间大小有助于将底物折叠成椅子-椅子-椅子-船-船构型。Val和Trp之间的CH-π相互作用在A / B / C环形成位点周围赋予了稳健的蛋白质结构。