High-resolution 13C NMR study of pressure effects on the main phase transition in L-alpha-dipalmitoyl phosphatidylcholine vesicles.
AUTOR(ES)
Jonas, J
RESUMO
The effects of pressure on the liquid-crystalline to gel transition in vesicles of L-alpha-dipalmitoyl phosphatidylcholine were investigated by high-resolution proton-decoupled natural-abundance 13C NMR spectroscopy. The linewidths of several 13C resonances, including the choline methyl groups, carbonyl carbons, and choline methylene groups and the palmitoyl methyl groups are reported as a function of pressure at 52.7 degrees C. These preliminary NMR experiments clearly demonstrate that high-pressure, high-resolution proton-decoupled natural-abundance 13C NMR spectra are a promising tool to study the phase-transition behavior and the dynamics of model membrane systems.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=280376Documentos Relacionados
- High-resolution 13C nuclear magnetic resonance studies of glucose metabolism in Escherichia coli.
- High-resolution solid-state 13C nuclear magnetic resonance of bacterial spores: identification of the alpha-carbon signal of dipicolinic acid.
- High-resolution solid-state NMR of quadrupolar nuclei
- Solubilization and localization of triolein in phosphatidylcholine bilayers: a 13C NMR study.
- High-resolution NMR of encapsulated proteins dissolved in low-viscosity fluids