Symmetry of electrostatic interaction between pyrophosphate DNA moleculesстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 31 декабря 2013 г.
Авторы:Golo V.L.,
Kats E.I.,
Kuznetsova S.A.,
Volkov Yu,
S
Аннотация:We study chiral electrostatic interaction between artificial ideal homopolymer DNA-like
molecules in which a number of phosphate groups of the sugar-phosphate backbone are exchanged for
the pyrophosphate ones. We employ a model in which the DNA is considered as a one-dimensional lattice
of dipoles and charges corresponding to base pairs and (pyro)phosphate groups, respectively. The interaction
between molecules of the DNA is described by a pair potential U of electrostatic forces between
the two sets of dipoles and charges belonging to respective lattices describing the molecules. Minima of
the potential U indicate orientational ordering of the molecules and thus liquid crystalline phases of the
DNA. We use numerical methods for finding the set of minima in conjunction with symmetries verified by
the potential U. The symmetries form a non-commutative group of 8th order, S. Using the group S we
suggest a classification of liquid crystalline phases of the DNA, which allows several cholesteric phases, that
is polymorphism. Pyrophosphate forms of the DNA could clarify the role played by charges in their liquid
crystalline phases, and open experimental research, important for nano-technological and bio-medical
applications