A New Class of Amphiphiles Bearing Rigid Hydrophobic Groups for Solubilization and Stabilization of Membrane Proteins
作者:Pil Seok Chae、Søren G. F. Rasmussen、Rohini R. Rana、Kamil Gotfryd、Andrew C. Kruse、Aashish Manglik、Kyung Ho Cho、Shailika Nurva、Ulrik Gether、Lan Guan、Claus J. Loland、Bernadette Byrne、Brian K. Kobilka、Samuel H. Gellman
DOI:10.1002/chem.201200069
日期:2012.7.27
Non‐traditional amphiphiles: Conferring aqueous solubility on membraneproteins generally requires the use of a detergent or other amphiphilic agent. A new class of amphiphiles was synthesized, based on steroidal lipophilic groups, and evaluated with several membraneproteins. The results show that the new amphiphile, “glyco‐diosgenin” (GDN; see figure), confers enhanced stability to a variety of membrane proteins
Bringing membrane proteins into aqueous solution generally requires the use of detergents or other amphiphilic agents. The invention provides a new class of amphiphiles, each of which includes a multi-fused ring system as a lipophilic group. These new amphiphiles confer enhanced stability to a range of membrane proteins in solution relative to conventional detergents, leading to improved structural and functional stability of membrane proteins, including integral membrane proteins. Accordingly, the invention provides new amphiphiles for biochemical manipulations and characterization of membrane proteins. These amphiphiles display favorable behavior with membrane proteins and can be used to aid the solubilization, isolation, purification, stabilization, crystallization, and/or structural determination of membrane proteins.