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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: J Biomol NMR. 2014 Aug;59(4):263–277. doi: 10.1007/s10858-014-9845-z

Figure 6.

Figure 6

Comparison of DMPC 13C (a) and 1H (b) MAS spectra in the absence (top two rows) and presence of cryoprotectants. The 303 K spectrum of the control sample gives the limiting resolution of the liquid-crystalline membrane. All other spectra were measured at 203 K. The unprotected sample shows severe line broadening at 203 K, and water is completely frozen. Trehalose and glycerol did not cause any resolution enhancement, while PEG, DMF and DMSO improved the spectral resolution. DMF and DMSO also retained liquid water, indicating that they retard ice formation.