the intrinsic off-rates for lipid exchange at the intramembranous surface of the protein in dmpc alone at 30 degrees c were found to be 5 x 10 ( 6 ) , 6 x 10 ( 6 ) , and 2 x 10 ( 6 ) s-1 for the phosphatidylcholine , phosphatidylglycerol , and phosphatidic acid spin-labels , respectively .
C0012456
dmpc
C1959616
phosphatidylcholine