measurements of energy transfer between the lipid-membrane surface and the sites of labeling on receptor-bound alpha-toxin derivatives show that the relative distances of closest approach between the surface of the lipid membrane domain and the sites of labeling are in the order lys-23 less than or equal to lys-49 less than lys-35 less than or equal to lys-69 .
C0023779
lipid
C0025249
lipid membrane