Fig. 4.

Average relative phospholipid order parameters calculated by using the same parameters as in Fig. 1. The relative order parameters are scaled so that a phospholipid molecule in a complex has an order parameter of one, and zero otherwise. (A) Average phospholipid order parameters at 298 K in the homogeneous binary mixture of cholesterol and the reactive phospholipid along the R–C axis in Fig. 1 A. (B) Average order parameters as a function of temperature at the critical composition. Below the ternary critical temperature there are two average order parameters, one for each phase. The order parameters in A and B should be a measure of deuterium quadrupole NMR splittings of deuterated phospholipids in a single lipid phase.