Insight into the denaturation transition of DNA

被引:9
作者
Hammouda, Boualem [1 ]
机构
[1] Natl Inst Stand & Technol, Ctr Neutron Res, Gaithersburg, MD 20899 USA
基金
美国国家科学基金会;
关键词
Denaturation transition; UV absorption spectroscopy; DNA in mixed solvents; SOLVENTS;
D O I
10.1016/j.ijbiomac.2009.09.002
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
DNA undergoes a helix-to-coil transition (also called denaturation transition) upon heating This transition can also be facilitated by using solvent mixtures (for example water-alcohol) An increase in the hydrophobic tail of the second solvent molecule first decreases then increases the melting temperature appreciably. Measurement on 4% DNA in a series of water-alcohol mixtures shows that the helix-to-coil melting transition is driven by the solvent ability to cross the hydrophobic sugar-rich region DNA is behaving like a cylindrical micelle. Published by Elsevier B.V.
引用
收藏
页码:532 / 534
页数:3
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