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http://hdl.handle.net/2289/1283| Title: | Cholesterol-induced modulated phase in phospholipid membranes |
| Authors: | Karmakar, Sanat Raghunathan, V.A. |
| Issue Date: | 2003 |
| Publisher: | The American Physical Society |
| Citation: | Physical Review Letters, 2003, Vol.91, 098102 |
| Abstract: | We report the observation of a cholesterol-induced modulated phase (Pbeta) in dipalmitoyl phosphatidylcholine bilayers. It occurs below the main transition of the lipid at cholesterol concentrations of around 15 to 20 mol % and is distinct from the ripple (Pbeta[prime]) phase found in between the main and pretransitions at lower cholesterol concentrations. An electron density map of this phase, constructed from x-ray diffraction data from oriented multilayers, shows that the bilayers in this phase have a one-dimensional periodic height modulation with an amplitude of about 2.5 Å. A partial phase diagram of the system deduced from diffraction data is in broad agreement with earlier studies. |
| URI: | http://hdl.handle.net/2289/1283 |
| ISSN: | ISSN 1079-7114 (online) 0031-9007 (print) |
| Alternative Location: | http://link.aps.org/abstract/PRL/v91/e098102 |
| Copyright: | (2003) by the American Physical Society |
| Appears in Collections: | Research Papers (SCM) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2003 Phy Rev Lett V91 p098102.pdf | 4 pages | 497.67 kB | Adobe PDF | View/Open |
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