SCANNING TUNNELING MICROSCOPY OF DNA

被引：0
|
作者：
要小未
徐耀良
胡钧
顾敏明
李民乾
机构：
[1] Institute of Nuclear Research Academia Sinica Shanghai 201800 China
[2] Institute of Nuclear Research Academia Sinica Shanghai 201800 China
来源：
Nuclear Science and Techniques | 1991年 / 03期
关键词：
STM B-DNA;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Uncoated DNA deposited on graphite surface was imaged in air with the scanning tunneling microscope (STM). The images revealed a helical pitch of 3.6 nm whereas the average width was 2.3nm. Periodic alternation of major and minor grooves were resolved with high resolution. Our STM images were in reasonable agreement with the B-form DNA structural model derived from X-ray diffraction studies. It was concluded that the STM could be useful for local structural studies of biomolecules.
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页码：169 / 171
页数：3
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