Glycosyl-Substituted Dicarboxylates as Detergents for the Extraction, Overstabilization, and Crystallization of Membrane Proteins
作者:Kim-Anh Nguyen、Marine Peuchmaur、Sandrine Magnard、Romain Haudecoeur、Cédric Boyère、Saravanan Mounien、Ikram Benammar、Veronica Zampieri、Sébastien Igonet、Vincent Chaptal、Anass Jawhari、Ahcène Boumendjel、Pierre Falson
DOI:10.1002/anie.201713395
日期:2018.3.5
To tackle the problems associated with membrane protein (MP) instability in detergent solutions, we designed a series of glycosyl‐substituted dicarboxylate detergents (DCODs) in which we optimized the polar head to clamp the membrane domain by including, on one side, two carboxyl groups that form salt bridges with basic residues abundant at the membrane–cytoplasm interface of MPs and, on the other
为了解决清洁剂溶液中与膜蛋白(MP)不稳定性相关的问题,我们设计了一系列糖基取代的二羧酸盐清洁剂(DCOD),其中我们优化了极性头,通过在一侧包含两个羧基来夹持膜结构域。形成盐桥的基团具有大量残留在MPs的膜-细胞质界面上的碱性残基,另一方面是形成氢键的糖。经萃取,将DCODs图8b,图8c和9b中保存BMRA,一个ATP结合盒泵的ATP酶的功能,更有效地比参考或最近设计的洗涤剂。所述DCODs 8,图8b,图8f,9,和9 b引起BmrA的热位移为20至29°C,天然形式的G蛋白偶联腺苷受体A 2A R的热位移为13至21°C 。化合物8 f和8 g改善了BmrA晶体的衍射分辨率从6到4Å。因此,DCOD被认为是MP的结构生物学的有前途和强大的工具。