Ternary complex formation in aqueous solution between a β-cyclodextrin polymer, a cationic surfactant and DNA

被引：11
|
作者：
Galant, C
Amiel, C
Loïc, A
机构：
[1] CNRS, Lab Rech Polymeres, UMR 7581, F-94320 Thiais, France
[2] Univ Evry, Lab Mat Polymeres Interfaces, MPI, F-91025 Evry, France
来源：
MACROMOLECULAR BIOSCIENCE | 2005年 / 5卷 / 11期
关键词：
beta-cyclodextrin; DNA; polyelectrolyte complex; small angle neutron scattering; surfactants;
D O I：
10.1002/mabi.200500112
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Polyelectrolyte complexes have been elaborated by mixing in water neutral poly(beta-CD), a cationic surfactant (DTAC) and herring sperm DNA fragments. The driving forces for the poly(beta-CD)/DTAC/DNA association in aqueous solution are. on the one hand, reversible inclusion interactions between the CD cavities of poly(beta-CD) and the alkyl group of DTAC, leading to the formation of a polycation and, on the other hand, electrostatic interactions between the opposite charges of the cationic surfactant and anionic DNA. Viscometry and SANS have been used to prove the occurrence of such ternary complexes in dilute aqueous solutions.
引用
收藏
页码：1057 / 1065
页数：9
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