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- W1982862499 abstract "We report the formation of nano- and microtubes from a binary mixture of synthetic phospholipids (e.g. dimyristoleoyl-sn-glycero-phosphocholin) and a cholesteryl-aminouridine conjugate. Fluorescence and electron microscopy (EM) together with scanning force microscopy (SFM) were used to elucidate tubes' structure and morphology. Different kinds of tubes were found to form from rolled-up membrane sheets. Their diameter depends on the degree of furling: strongly furled sheets form thin tubes of about 300 nm diameter, while less furled sheets form thick tubes of about 2-4 μm diameter. In both cases, the length averages between 20-40 µm.View Large Image | View Hi-Res Image | Download PowerPoint SlidePreliminary SFM and EM results revealed that thin tubes are stable with a smooth outer layer. In contrast, thick tubes collapse upon air-drying. This instability can be explained by loss of water during ambient conditions, which is supported by measurements using cryo electron microscopy (see Figure). The edges of the tubes showing steps allow us to assume the furling mechanism of formation. We propose that sheets roll into tubes with several concentric layers, which is determined by the chirality of cholesteryl-aminouridine. We now aim at controlling the described self-assembly process through a better understanding of the non-covalent interactions involved." @default.
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- W1982862499 date "2014-01-01" @default.
- W1982862499 modified "2023-09-28" @default.
- W1982862499 title "Furled Membrane Sheets Lead to Self-Assembled Nano- and Microtubes" @default.
- W1982862499 doi "https://doi.org/10.1016/j.bpj.2013.11.601" @default.
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