Figure 4.
Fig. 4. Experiments to discriminate between the
electrostatic and dynamic effects of mastoparan binding to DMPC
and DMPC/DMPG bilayers. (A) Narrowing of the ^31P CSA (left
scale, full lines) of DMPC and DMPC/DMPG bilayers induced by the
addition of mastoparan. The ^2H-NMR quadrupole splittings (right
scale, dashed line) of headgroup deuterated DMPC-d[4] are
reduced to the same extent ( and remain
equivalent), hence the choline and phosphate groups respond by a
similar increase in motional averaging. (B) When negatively
charged DMPG was added, the and quadrupole
splittings of headgroup-deuterated DMPC-d[4] changed linearly
and in a counter-directional manner.
The above figure is reprinted
by permission from the Federation of European Biochemical Societies:
Eur J Biochem
(2001,
268,
302-309)
copyright 2001.
and 
remain
equivalent), hence the choline and phosphate groups respond by a
similar increase in motional averaging. (B) When negatively
charged DMPG was added, the