Study on the Effect of Ultrasound on the Secondary Structure of BSA by FTIR

文献类型： 外文期刊

第一作者： Liu Bin

作者： Liu Bin;Ma Hai-le;Li Shu-jun;Zhao Wei-rui;Ma Hai-le;Li Shu-jun;Li Lin

作者机构：

关键词： Bovine serum album;Ultrasound;FTIR;Secondary structure

期刊名称：SPECTROSCOPY AND SPECTRAL ANALYSIS （ 影响因子：0.589； 五年影响因子：0.504 ）

ISSN： 1000-0593

年卷期： 2010 年 30 卷 8 期

页码：

收录情况： SCI

摘要： Structure changes of bovine serum albumin (BSA) under ultrasound treatment were studied using Fourier transform infrared spectroscopy (FTIR) and fluorescence spectroscopy. The largest emission peak of BSA solution's fluorescence spectra shifted in blue orientation, indicating that the environment of the Trp residues in BSA had altered with ultrasound treatment. The fluorescence intensity of the solution has also decreased with ultrasound, which showed fluorescence quenching effect and the conformation changes of the BSA. The relative contents of alpha-helix, beta-fold, beta-turn and random coil under different ultrasound treatment power and time were quantitatively determined via analysis of the amide I changes of infrared spectra of BSA using curve fitting method, the secondary structure of BSA had variation trend from alpha-helix to beta-sheet, however, the relative contents random coil had not significant change.

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