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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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本文引用的文献

3
4
Vibrational analysis of peptides, polypeptides, and proteins. V. Normal vibrations of beta-turns.
Biopolymers. 1980 Jan;19(1):1-29. doi: 10.1002/bip.1980.360190102.
9
Laser Raman investigation of the conformation of human immunoglobulin G.
Biochim Biophys Acta. 1976 Dec 22;453(2):502-12. doi: 10.1016/0005-2795(76)90146-x.
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Determination of the secondary structure of proteins by laser Raman spectroscopy.
J Am Chem Soc. 1976 Oct 27;98(22):7075-80. doi: 10.1021/ja00438a057.

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