Abstract
An EPR study of a macroscopically oriented multibilayer system of DMPC/cholesterol (2:1), order parameter S≈1, is presented. The conventional cholestane spin label 14N-CSL as well as its isotopically substituted analogue 15N-CSL were used in the experiments. The temperature range studied, −18 to 18° C, covered the rigid-limit and the slow-motion
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