NMR studies of membranes composed of glycolipids and phospholipids
2007 (English)In: Biochimica et Biophysica Acta - Biomembranes, ISSN 0005-2736, E-ISSN 1879-2642, Vol. 1768, no 10, 2432-2437 p.Article in journal (Refereed) Published
Lipid membranes composed of monogalactosyldiacylglycerol (MGDG) and dimyristoylphosphatidylcholine (DMPC) were studied by means of NMR spectroscopy. The macroscopic phase behaviour was investigated by P-31 NMR under stationary conditions, whereas microscopic properties such as segmental ordering were probed by two-dimensional H-1-C-13 separated local field experiments under magic-angle spinning conditions. Our results clearly show that ordering/disordering effects occur for the headgroups as well as for the acyl chains when the sample composition is varied. In particular, the H-1-C-13 dipolar couplings within the galactose headgroup of MGDG exhibited significant concentration dependence.
Place, publisher, year, edition, pages
2007. Vol. 1768, no 10, 2432-2437 p.
solid-state NMR, carbon-13, phosphorus-31, dipolar couplings, separated local field, lyotropic liquid crystals, biomembranes, nuclear-magnetic-resonance, heteronuclear dipolar couplings, field-cycling nmr, biological-membranes, lipid-bilayers, model membranes, mas nmr, monogalactosyl diglyceride, cross-polarization, segmental order
IdentifiersURN: urn:nbn:se:kth:diva-17095DOI: 10.1016/j.bbamem.2007.05.010ISI: 000250663400010OAI: oai:DiVA.org:kth-17095DiVA: diva2:335138
QC 201005252010-08-052010-08-05Bibliographically approved