Comparison of the effects of inserted C40- and C50-terminally dihydroxylated carotenoids on the mechanical properties of various phospholipid vesicles.
作者： Tarik Lazrak , Alain Milon , Geneviève Wolff , Anne-Marie Albrecht , Monique Miehé
DOI: 10.1016/0005-2736(87)90163-5
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摘要: We have measured the extent of incorporation zeaxanthin (C40) and decaprenozeaxanthin (C50) in unilamellar vesicles dimyristoylphosphatidylcholine (n-C14) dipalmitoylphosphatidylcholine (n-C16). The is larger when molecular length carotenoid corresponds to thickness phospholipid bilayer. Stereochemically pure 2,3-di-O-phytanyl-sn-glycero-1-phosphocholine was prepared by modification polar heads phospholipids Halobacterium halobium. Vesicles this branched-chain ether incorporate poorly carotenoids, whereas egg lecithin them better. Osmotic swelling water permeability vesicles, with or without were a stopped-flow, light-scattering system. reinforcing effect (lower higher rigidity) carotenoids at 1.5 mol% into diphytanylphosphatidylcholine comparable that 5 cholesterol; however, no measurable on vesicles. These results imply reinforcement membrane depends subtle adjustment phospholipid-carotenoid
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