Abstract: To compare the protein structure, the second-order moment are applied to analyze the protein’s principal component to construct protein three dimension united coordinates. Based on that, the protein’s spatial structure factors are transformed by wavelet to construct protein three dimension spatial structural spectra. Experimental results show that there are some differences in the spectrua of the same group protein under collective similar, and all the differences can be used to explore the hidden eigenvalue of the protein structure, promoting the preciseness of the compare of the protein structure.

Key words: principal component analysis, structure factors, wavelet transform

摘要： 为了比较和分析蛋白质结构，采用二阶矩进行蛋白质质量主成分分析，以此构建蛋白质统一坐标系，建立蛋白质空间结构因子，并利用小波变换建立蛋白质三维空间结构频谱。实验结果表明，同类蛋白质结构频谱在总体相同的情况下有相异，这些差异点可为蛋白质结构比较提供量化分析依据。

关键词: 主成分分析, 结构因子, 小波变换

CLC Number: 

• TP301.6