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Mechanism of interaction of DNA with surfactants in water-alcohol media and structure of related complexesстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 28 мая 2015 г.
- Авторы: Sergeev V.G., Pyshkina O.A., Zinchenko A.A., Zezin S.B., Zezin A.B., Kabanov V.A.
- Журнал: Vysokomolekularnye Soedineniya. Ser.A Ser.B Ser.C - Kratkie Soobshcheniya
- Том: 45
- Номер: 5
- Год издания: 2003
- Издательство: Russian Academy of Sciences
- Местоположение издательства: Russian Federation
- Первая страница: 814
- Последняя страница: 822
- Аннотация: It was shown that the interaction of DNA with cationic surfactants, cetyltrimethylammonium bromide and distearyldimethylammonium chloride, in water-2-propanol solutions yields complexes of variable composition depending on the molar ratio of components. When a surfactant is in deficiency, these complexes remain soluble in water up to a certain critical concentration of the surfactant specified by its nature. Upon complexation in water-alcohol solutions, DNA molecules preserve the B-form of double helix conformation, which is characteristic of the aqueous solutions of DNA. In the condensed phase, DNA complexes with distearyldimethylammonium chloride prepared in water or water-alcohol solutions exhibit a similar lamellar structure. Lamellae are formed by surfactant cations neutralizing the phosphate groups of DNA. Given this, DNA polyanions that are located in layers between lamellae retain the double helix conformation.
- Добавил в систему: Зезин Александр Борисович