Charge Structure and Counterion Distribution in Hexagonal DNA Liquid Crystal
نویسندگان
چکیده
منابع مشابه
Charge structure and counterion distribution in hexagonal DNA liquid crystal.
A hexagonal liquid crystal of DNA fragments (double-stranded, 150 basepairs) with tetramethylammonium (TMA) counterions was investigated with small angle neutron scattering (SANS). We obtained the structure factors pertaining to the DNA and counterion density correlations with contrast matching in the water. Molecular dynamics (MD) computer simulation of a hexagonal assembly of nine DNA molecul...
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We predict a condensation phenomenon in an overall neutral system, consisting of a single charged plate and its oppositely charged counterions. Based on the "two-fluid" model, in which the counterions are divided into a "free" and a "condensed" fraction, we argue that for high surface charge, fluctuations can lead to a phase transition in which a large fraction of counterions is condensed. Furt...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 2007
ISSN: 0006-3495
DOI: 10.1529/biophysj.106.095745