DNA主链构象与脱氧鸟苷组分构象相关性的喇曼分析 |
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引用本文: | 余多慰 柯惟中. DNA主链构象与脱氧鸟苷组分构象相关性的喇曼分析[J]. 南京师大学报(自然科学版), 1997, 20(1): 71-74 |
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作者姓名: | 余多慰 柯惟中 |
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作者单位: | 南京师范大学 |
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基金项目: | 江苏省教育委员会自然科学基金 |
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摘 要: | 对小牛胸腺DNA纤维样品溶解3h内的空间构象变化过程进行了喇曼光谱分析,结果显示了表征脱氧鸟苷糖环折迭不同类型的672cm^-1与683cm^-1峰的同时存在,与DNA分子主链不同特征峰的同时出现之间有着明显的联系。
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关 键 词: | 脱氧鸟苷 散射谱 DNA 主链构象 分子构象 |
Raman Spectroscopic Analyses of Conformations Relationship Between Deoxyguanosine Component and Deoxyribose-phosphate Backbone in DNA |
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Abstract: | After added distilled water to fibers ,the Raman spectra of calf thymus DNA have been obtained for observes spatial conformation changes in the initial 3 hours.Some analytical results indicate that the relations between emergence of the characteristic lines assigned to the different sugar-ring packering types of deoxyguanosine,which contain both 672cm -1 and 683cm -1 ,and emergence of the diagnostic bands assigned to antisymmetric stretching modes of the OPO diester group,which reflect different DNA molecular main-chain helix structure ,are exist unambiguously.It is important that must have sufficient dissolution time to gain uniform B-DNA conformation molecule in aqueous solution state. |
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Keywords: | Calf thymus DNA Deoxyguanosine Conformation Raman spectra |
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