2004 Volume 68 Issue 8 Pages 1743-1747
The interaction of a tea catechin, epigallocatechin gallate (EGCg), with the model membrane of dimyristoylphosphatidylcholine (DMPC) was studied by solid-state 31P and 2H NMR. The 31P chemical shift anisotropy of the DMPC phosphate group decreased on addition of EGCg. The 2H NMR spectrum of [4-2H]EGCg, which is deuterated at the 4-position, in the DMPC liposomes gave deuterium nuclei with much smaller quadrupole splittings than those in the solid phase. These 31P and 2H NMR observations provide direct experimental evidence that the EGCg molecule interacts with the lipid bilayers.
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