Scanning force microscopy of circular and linear plasmid DNA spread on mica with a quaternary ammonium salt
نویسندگان
چکیده
منابع مشابه
Plasmid DNA network on a mica substrate investigated by atomic force microscopy.
functional biopolymer. It has been widely used as a nanomaterial, such as DNA computer nanoinformation pits, DNA microarrays and DNA molecular conduction wires.1–3 Hence, it is important to fabricate a DNA nanoconstruction. Many research groups are attempting to fabricate DNA film, networks (monolayer), and other topological constructions. For example, the Seeman group reported the construction...
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The microscopic equilibrium structures of adsorbed films of quaternary ammonium surfactants on mica have been investigated by noncontact atomic force microscopy imaging as a function of alkyl chain length and headgroup structure. Spherical and cylindrical surface micelles were observed; these were found to be related to bulk solution self-assembly and the surfactant packing parameter, v/a0lc. S...
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Reaction of primary C(55)-allylic alcohol moraprenol (WT(3)C(7-9)-OH, a polyprenol from mulberry leaves) with triethylamine in the presence of phosphorus oxychloride leads to a quaternary ammonium chloride with a good yield (72%) and high cis-stereoselectivity of the terminal isoprene unit. Cationic polyprenyl derivatives may be useful for transfection and immunological studies.
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چکیده ندارد.
15 صفحه اولDNA height in scanning force microscopy.
The measured height of DNA molecules adsorbed on a mica substrate by scanning probe microscopy is always less than the theoretical diameter. In this paper we show that, when imaged in ambient conditions, the molecules are usually immersed in the salt layer used to adsorb them to the substrate. This layer distorts the measurement of DNA height and is the main source of error but not the only one...
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ژورنال
عنوان ژورنال: Nucleic Acids Research
سال: 1993
ISSN: 0305-1048,1362-4962
DOI: 10.1093/nar/21.25.6004