基因序列内部特征与蛋白质对称结构的相关性分析
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广东省低成本健康技术创新团队项目资助

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Analysis on the Association Between Intragenic Features and Symmetry in Protein Structures
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    摘要:

    蛋白质的翻译是一个非常复杂且至关重要的生命过程。翻译速率会沿着mRNA上发生改变借以调控伴随翻译的蛋白质折叠,并对蛋白质的最终构象产生重要影响。本文以TIM beta-alpha barrel折叠子中的两个不同物种HisA蛋白质为研究对象,初步分析了它们基因序列中局部密码子使用偏好、局部残基带电性分布、局部GC含量分布与蛋白质对称结构的相关性,探讨翻译过程中各种因素在蛋白质对称结构形成过程中的可能调控机制。结果表明,在两个不同物种的HisA蛋白质中,对称结构与密码子使用偏好、残基带电性以及GC含量都存在一定程度的相关性。

    Abstract:

    Protein translation is a remarkably complex and crucial process of life. Translation speed varies along mRNA to coordinate the co-translational protein folding, and such variations may have drastic effects on the final conformation of the protein encoded. In this paper, we choose HisA protein with TIM beta-alpha barrel fold from two different species to investigate the factors that may be involved in modulating translation process for the fomation of structure symmetry. The association between symmetry in protein structure and several intragenic features is explored, including local codon usage bias along codon sequence, local charge distribution of the encoded protein sequence, local GC content distribution along the nucleotide sequence. Our results show that for HisA proteins from two different species, symmetry in structure is correlated with codon usage bias, charge of the residues and GC content.

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引文格式
申小娟,李光林.基因序列内部特征与蛋白质对称结构的相关性分析 [J].集成技术,2013,2(1):57-61

Citing format
Shen XiaoJuan, li Guang-lin. Analysis on the Association Between Intragenic Features and Symmetry in Protein Structures[J]. Journal of Integration Technology,2013,2(1):57-61

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  • 在线发布日期: 2013-06-18
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