Small-angle neutron scattering to detect rafts and lipid domains

Methods in Molecular Biology
J PencerJ Katsaras

Abstract

The detection and characterization of lateral heterogeneities or domains in lipid mixtures has attracted considerable interest, because of the roles that such domains may play in biological function. Studies on both model and cell membranes demonstrate that domains can be formed over a wide range of length scales, as small as nanometers in diameter up to microns. However, although the size and shape of micron-sized domains are readily visualized in freely suspended vesicles, by techniques such as fluorescence microscopy, imaging of nanometer-sized domains has thus far been performed only on substrate-supported membranes (through, e.g., atomic force microscopy), whereas additional evidence for nanodomains has depended on indirect detection (through, e.g., nuclear magnetic resonance or fluorescence resonance energy transfer). Small-angle neutron scattering (SANS) is a technique able to characterize structural features on nanometer length scales and can be used to probe freely suspended membranes. As such, SANS shows promise to characterize nanometer-sized domains in model membranes. The authors have recently demonstrated the efficacy of SANS to detect and characterize nanodomains in freely suspended mixed lipid vesicles.

Citations

May 26, 2011·Cold Spring Harbor Perspectives in Biology·Ole G Mouritsen
Oct 3, 2014·The Journal of Chemical Physics·Hsing-Lun WuHeng-Kwong Tsao
Nov 6, 2015·The Journal of Physical Chemistry Letters·David L Worcester, Michael Weinrich
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Aug 23, 2019·The Journal of Membrane Biology·Pranav Adhyapak, Shobhna Kapoor
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Dec 18, 2020·Frontiers in Cell and Developmental Biology·Anna BochicchioRainer A Böckmann
Oct 28, 2008·Biochimica Et Biophysica Acta·Félix M GoñiJenifer L Thewalt

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