Novel Xylene-Linked Maltoside Amphiphiles (XMAs) for Membrane Protein Stabilisation

TY - JOUR

T1 - Novel Xylene-Linked Maltoside Amphiphiles (XMAs) for Membrane Protein Stabilisation

AU - Cho, Kyung Ho

AU - Du, Yang

AU - Scull, Nicola J

AU - Hariharan, Parameswaran

AU - Gotfryd, Kamil

AU - Loland, Claus J

AU - Guan, Lan

AU - Byrne, Bernadette

AU - Kobilka, Brian K

AU - Chae, Pil Seok

N1 - © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

PY - 2015/7/1

Y1 - 2015/7/1

N2 - Membrane proteins are key functional players in biological systems. These biomacromolecules contain both hydrophilic and hydrophobic regions and thus amphipathic molecules are necessary to extract membrane proteins from their native lipid environments and stabilise them in aqueous solutions. Conventional detergents are commonly used for membrane protein manipulation, but membrane proteins surrounded by these agents often undergo denaturation and aggregation. In this study, a novel class of maltoside-bearing amphiphiles, with a xylene linker in the central region, designated xylene-linked maltoside amphiphiles (XMAs) was developed. When these novel agents were evaluated with a number of membrane proteins, it was found that XMA-4 and XMA-5 have particularly favourable efficacy with respect to membrane protein stabilisation, indicating that these agents hold significant potential for membrane protein structural study. Part of the solution: Structurally unique amphiphiles with a xylene linker were prepared by a convenient synthetic protocol. Some of these agents (e.g., XMA-5; see scheme) conferred enhanced membrane protein stability relative to a conventional detergent (n-dodecyl-β-D-maltoside), indicating the potential utility in membrane protein structure study.

AB - Membrane proteins are key functional players in biological systems. These biomacromolecules contain both hydrophilic and hydrophobic regions and thus amphipathic molecules are necessary to extract membrane proteins from their native lipid environments and stabilise them in aqueous solutions. Conventional detergents are commonly used for membrane protein manipulation, but membrane proteins surrounded by these agents often undergo denaturation and aggregation. In this study, a novel class of maltoside-bearing amphiphiles, with a xylene linker in the central region, designated xylene-linked maltoside amphiphiles (XMAs) was developed. When these novel agents were evaluated with a number of membrane proteins, it was found that XMA-4 and XMA-5 have particularly favourable efficacy with respect to membrane protein stabilisation, indicating that these agents hold significant potential for membrane protein structural study. Part of the solution: Structurally unique amphiphiles with a xylene linker were prepared by a convenient synthetic protocol. Some of these agents (e.g., XMA-5; see scheme) conferred enhanced membrane protein stability relative to a conventional detergent (n-dodecyl-β-D-maltoside), indicating the potential utility in membrane protein structure study.

U2 - 10.1002/chem.201501083

DO - 10.1002/chem.201501083

M3 - Letter

C2 - 26013293

SN - 0947-6539

VL - 21

SP - 10008

EP - 10013

JO - Chemistry: A European Journal

JF - Chemistry: A European Journal

IS - 28

ER -