通过激光拉曼光谱法测定β-转角构象。
Determination of beta-turn conformation by laser Raman spectroscopy.
作者信息
Ishizaki H, Balaram P, Nagaraj R, Venkatachalapathi Y V, Tu A T
出版信息
Biophys J. 1981 Dec;36(3):509-17. doi: 10.1016/S0006-3495(81)84749-2.
Abstract
To correlate the Raman frequencies of the amide I and III bands to beta-turn structures, three peptides shown to contain beta-turn structure by x-ray diffraction and NMR were examined. The compounds examined were tertiary (formula: see text). The amide I band of these compounds is seen at 1,668, 1,665, and 1,677 cm-1, and the amide III band appears at 1,267, 1,265, and 1,286 cm-1, respectively. Thus, it is concluded that the amide I band for type III beta-turn structure appears in the range between 1,665 and 1,677 cm-1 and the amide III band between 1,265 and 1,286 cm-1.
摘要
为了将酰胺I和III带的拉曼频率与β-转角结构相关联，研究了三种通过X射线衍射和核磁共振显示含有β-转角结构的肽。所研究的化合物为叔胺（分子式：见正文）。这些化合物的酰胺I带出现在1668、1665和1677cm-1处，酰胺III带分别出现在1267、1265和1286cm-1处。因此，可以得出结论，III型β-转角结构的酰胺I带出现在1665至1677cm-1之间的范围内，酰胺III带出现在1265至1286cm-1之间。
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