Accessible Mannitol-Based Amphiphiles (MNAs) for Membrane Protein Solubilisation and Stabilisation

Overview

Journal Chemistry

Specialty Chemistry

Date 2016 Apr 14

PMID 27072057

Citations 30

Authors

Hazrat Hussain

Yang Du

Nicola J Scull

Jonas S Mortensen

Jeffrey Tarrasch

Hyoung Eun Bae

Claus J Loland

Bernadette Byrne

Brian K Kobilka

Pil Seok Chae

Affiliations

Soon will be listed here.

Abstract

Integral membrane proteins are amphipathic molecules crucial for all cellular life. The structural study of these macromolecules starts with protein extraction from the native membranes, followed by purification and crystallisation. Detergents are essential tools for these processes, but detergent-solubilised membrane proteins often denature and aggregate, resulting in loss of both structure and function. In this study, a novel class of agents, designated mannitol-based amphiphiles (MNAs), were prepared and characterised for their ability to solubilise and stabilise membrane proteins. Some of MNAs conferred enhanced stability to four membrane proteins including a G protein-coupled receptor (GPCR), the β2 adrenergic receptor (β2 AR), compared to both n-dodecyl-d-maltoside (DDM) and the other MNAs. These agents were also better than DDM for electron microscopy analysis of the β2 AR. The ease of preparation together with the enhanced membrane protein stabilisation efficacy demonstrates the value of these agents for future membrane protein research.

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