| Literature DB >> 1069266 |
S J Opella, J P Yesinowski, J S Waugh.
Abstract
Proton-enhanced 13C nuclear magnetic resonance is used to obtain signals from labeled cholesterols in lecithin dispersions. The [26-(13)C]cholesterol resonance indicates that the aliphatic tail of the molecule undergoes reorientation fast enough to average completely the chemical shift anisotropy. In contrast, [4-(13)C]cholesterol signals are characteristic of limited anisotropic reorientation. The resonances from the 4 position are sensitive to the temperature-concentration phase diagram. A phase boundary is observed at about 20 mole percent cholesterol.Entities:
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Year: 1976 PMID： 1069266 PMCID： PMC431220 DOI： 10.1073/pnas.73.11.3812
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN： 0027-8424 Impact factor: 11.205