Liquid-liquid phase coexistence in lipid membranes observed by natural abundance 1H-13C solid-state NMR

Phys Chem Chem Phys. 2018 Apr 18;20(15):9751-9754. doi: 10.1039/c8cp01012a.

Abstract

We demonstrate that 1H-13C solid-state MAS NMR is suitable to detect liquid disordered/liquid ordered phase coexistence in a DOPC/DPPC/cholesterol mixture with natural abundance of isotopes as an alternative to 2H NMR. Such methodology is potentially applicable to study lipid phase coexistence phenomena in biological matter with high lipid content, e.g. lung surfactant or myelin, for which isotopic labeling is not possible.

MeSH terms

  • Carbon-13 Magnetic Resonance Spectroscopy*
  • Chemistry Techniques, Analytical / methods*
  • Lipid Bilayers / chemistry*
  • Membrane Lipids / analysis
  • Membrane Lipids / chemistry*
  • Phase Transition

Substances

  • Lipid Bilayers
  • Membrane Lipids