盐诱导的聚（dA-dT）构象变化。
Salt-induced conformational changes of poly(dA-dT).
作者信息
Vorlícková M, Kypr J, Kleinwächter V, Palecek E
出版信息
Nucleic Acids Res. 1980 Sep 11;8(17):3965-73. doi: 10.1093/nar/8.17.3965.
Abstract
Conformational changes of poly(dA-dT) . poly(dA-dT) induced by increasing ionic strength were studied using CD spectroscopy. It was found that a pronounced noncooperative inversion of the long-wavelength part of the CD spectrum of poly(dA-dT) . poly(dA-dT) occurred at high concentrations of CsF in solution. It was suggested that a great difference between the geometries of the purine and pyrimidine residues in the helix was characteristic of the structure of poly(dA-dT) . poly(dA-dT) in concentrated CsF solutions.
摘要
使用圆二色光谱法研究了离子强度增加引起的聚（dA-dT）·聚（dA-dT）的构象变化。发现在溶液中CsF高浓度时，聚（dA-dT）·聚（dA-dT）的圆二色光谱长波长部分发生了明显的非协同反转。有人提出，螺旋中嘌呤和嘧啶残基几何形状的巨大差异是聚（dA-dT）·聚（dA-dT）在浓CsF溶液中结构的特征。
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