Pyrene excimer fluorescence: a spatially sensitive probe to monitor lipid-induced helical rearrangement of apolipophorin III.

Abstract

Manduca sexta apolipophorin III (apoLp-III), an 18-kDa, monomeric, insect hemolymph apolipoprotein, is comprised of five amphipathic alpha-helices arranged as a globular bundle in the lipid-free state. Upon lipid binding, it is postulated that the bundle opens, exposing a continuous hydrophobic surface which becomes available for lipid interaction. To… (More)

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