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通过红外圆二色性研究DNA溶液构象：B族聚合物的实验与理论结果

DNA solution conformation via infrared circular dichroism: experimental and theoretical results for B-family polymers.

作者信息

Zhong W X, Gulotta M, Goss D J, Diem M

机构信息

Department of Chemistry, City University of New York, Hunter College, New York 10021.

出版信息

Biochemistry. 1990 Aug 14;29(32):7485-91. doi: 10.1021/bi00484a018.

DOI:10.1021/bi00484a018
PMID:2223780
Abstract

Infrared (vibrational) circular dichroism (VCD) has been observed for the DNA models d(CG)5, poly(dG-dC).poly(dG-dC), poly(dG).poly(dC), poly(dA-dT).poly(dA-dT), and poly(dA).poly(dT) in the B-conformation in buffered, aqueous solution. The observed results are quantitatively interpreted in terms of the exciton model for coupled carbonyl stretching vibrational states.

摘要

在缓冲水溶液中，已观察到处于B构象的DNA模型d(CG)5、聚(dG-dC)·聚(dG-dC)、聚(dG)·聚(dC)、聚(dA-dT)·聚(dA-dT)和聚(dA)·聚(dT)的红外（振动）圆二色性（VCD）。根据耦合羰基伸缩振动状态的激子模型对观察结果进行了定量解释。

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