Abstract
The effects of five fragments of prostatic acid phosphatase on dimyristoylphosphatidylcholine lipid multi-lamellar liposomes were studied by 2H and 31P NMR spectroscopy and those on planar supported multi-bilayers of the same lipid, by 1H and 31P NMR spectro-scopy. It was found that hydrophobic interaction is a dominated factor of the peptide–membrane binding, while the short α-helical fragments PAP(262-270) and PAP(262-272) strongly interact with the membrane at the interface, generally following to the Gibbs free energy of water-to-interface insertion.
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