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应用傅里叶红外光谱研究强声波作用下植物壁蛋白质二级结构变化
引用本文:沈子威,孙克利,杨钧,蔡国友,席葆树.应用傅里叶红外光谱研究强声波作用下植物壁蛋白质二级结构变化[J].光子学报,1999,28(7):600-602.
作者姓名:沈子威  孙克利  杨钧  蔡国友  席葆树
作者单位:1. 清华大学生物科学技术系,北京,100084
2. 清华大学力学系生物力学实验室,北京,100084
摘    要:本论文采用傅里叶红外光研究烟草花粉细胞在不同频率和不同功率的强声波作用下,细胞壁蛋白质二级结构的变化.实验表明,在酰胺Ⅰ和酰胺Ⅱ带都有变化.当频率为400Hz,功率分别为110dB、100dB时,酰胺Ⅰ带β 折叠向B‖折叠转移,振动态由ν(π,0)→ν‖(0,0);当功率为90dB,频率分别为800Hz、8000Hz时,酰胺Ⅱ带α 螺旋稍有改变.因此,本工作的结果将有助于我们了解强声波对植物细胞的作用效应.

关 键 词:傅里叶红外光  强声波  花粉细胞  蛋白质二级结构
收稿时间:1999-04-02
修稿时间:1999-04-02

THE SECONDARY STRUCTURE CHANGES OF PLANT CELL WALL PROTEINS AROUSED BY STRONG SOUND WAVES USING FT-IR
Shen Ziwei,Sun Keli,Yang Jun,Cai Guoyou,Xi Baoshu.THE SECONDARY STRUCTURE CHANGES OF PLANT CELL WALL PROTEINS AROUSED BY STRONG SOUND WAVES USING FT-IR[J].Acta Photonica Sinica,1999,28(7):600-602.
Authors:Shen Ziwei  Sun Keli  Yang Jun  Cai Guoyou  Xi Baoshu
Affiliation:1. Department of Biological Science and Biotechnology, Tsinghua University, Beijing 100084;2. Department of Engineering Mechanics, Tsinghua University, Beijing 100084
Abstract:In this paper,FT-IR is used to investigate the effects of strong sound waves at different frequency and strength on the secondary conformation of the cell wall proteins of tobacco cells.The experiment shows the changes on the Amide Ⅰ and Amide Ⅱ.While the frequency is at 400Hz and the power is at 110dB and 100dB,β sheet at Amide Ⅰ transform into β‖ sheet,vibration form transform from ν(π,0)to ν‖(0,0).While the power is at 90dB and the frequency is at 800Hz and 8000Hz,α helix at Amide Ⅱ has little change.The result is helpful to understand the effects of strong sound wave on the plant cells.
Keywords:FT  IR  Sound wave  Plant cells  Secondary conformation
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