摘要
采用多重分形谱对蛋白质序列进行分析。按照SCOP分类法,从PDB中选取三条同属于类的分维相近的蛋白质序列,利用多重分形分别对蛋白质空间距离以及序列中氨基酸的极性、体积的复杂性进行比较。实验结果表明,多重分形的奇异谱函数比简单的分形维数能提供更多的信息,克服了分形维数相同情况下,精细结构无法区分的困难,分析结果能够更加准确地描述个体之间的差异。
Protein sequences are analyzed with the muhifractal method.We chose three amino acid sequences from PDB based on SCOP,which all belonged to and had similar fractal dimensions.From the point of view of muhifractal,the complexity of the distance of protein and the polar and volume of amino acid sequences are compared.The results of experiments show that muhifractal spectrum function is effective which reflecte the difference with protein individual and better than single fractal in identifying structure character fine information,which is difficultly solved when the fractal dimensions are nearly same.
出处
《计算机工程与应用》
CSCD
北大核心
2007年第20期46-48,92,共4页
Computer Engineering and Applications
基金
国家自然科学基金(the National Natural Science Foundation of China under Grant No.60475017)
安徽省自然科学基金(the Natural Science Foundation of Anhui Province of China under Grant No.050420208)
安徽省高校省级自然科学研究基金(No.2006KJ244B)
安徽大学人才队伍建设基金
关键词
蛋白质
分形
分维
多重分形谱
protein
fractal
fractal dimension
muhi-fractal spectrum