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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Pan, Jianjun Heberle, Frederick A. Petruzielo, Robin S. Katsaras, John |
| Description | Country affiliation: United States Author Affiliation: Pan J ( Biology and Soft Matter Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States. jianjunp@gmail.com) |
| Abstract | The cell plasma membrane is a complex system, which is thought to be capable of exhibiting non-random lateral organization. Studies of live cells and model membranes have yielded mechanisms responsible for the formation, growth, and maintenance of nanoscopic heterogeneities, although the existence and mechanisms that give rise to these heterogeneities remain controversial. Small-angle neutron scattering (SANS) is a tool ideally suited to interrogate lateral heterogeneity in model membranes, primarily due to its unique spatial resolution (i.e., ~5-100nm) and its ability to resolve structure with minimal perturbation to the membrane. In this review we examine several methods used to analyze the SANS signal arising from freely suspended unilamellar vesicles containing lateral heterogeneity. Specifically, we discuss an analytical model for a single, round domain on a spherical vesicle. We then discuss a numerical method that uses Monte Carlo simulation to describe systems with multiple domains and/or more complicated morphologies. Also discussed are several model-independent approaches that are sensitive to membrane heterogeneity. The review concludes with several recent applications of SANS to the study of membrane raft mixtures. |
| File Format | HTM / HTML |
| ISSN | 00093084 |
| Journal | Chemistry and Physics of Lipids |
| Volume Number | 170-171 |
| e-ISSN | 18732941 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2013-05-01 |
| Publisher Place | Ireland |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Biochemistry Lipids Chemistry Nanostructures Monte Carlo Method Neutron Diffraction Scattering, Small Angle Journal Article Research Support, Non-u.s. Gov't Review |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Organic Chemistry Molecular Biology Biochemistry |
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