在TOPS表示下,蛋白质二次结构比较的独特方法
Debrupa Pal1,2, Sudeshna Dey3, Papri Ghosh3
1Computer Application, Narula Institute of Technology, Kolkata, India.
Journal of biomolecular structure & dynamics
|May 3, 2024
概括
本研究引入了一种新的无对齐方法,使用蛋白质结构拓学 (TOPS) 表示来比较蛋白质二次结构 (SSE). 这种新方法有效地构建了家族遗传树,超过了以前用于SSE分析的方法.
科学领域:
- 结构生物信息学 结构生物信息学
- 计算生物学是一种计算生物学.
- 生物物理学的生物物理.
背景情况:
- 评估蛋白质的二次结构相似性对于理解蛋白质功能至关重要.
- 现有的比较蛋白质二次结构元素 (SSE) 的方法有局限性,需要新的方法.
研究的目的:
- 通过蛋白质结构拓学 (TOPS) 表示来评估蛋白质二次结构相似性的新型无对齐方法.
- 开发一种基于蛋白质二次结构比较的基因树构建的新方法.
主要方法:
- 创建SSE的2D数值表示,按频率加权的点.
- 惯性时刻是使用加权坐标平均值来计算的.
- 创建一个由四个组件组成的描述符,并使用曼哈顿距离创建一个距离矩阵来构建遗传树 (NJ方法).
主要成果:
- 拟议的基于TOPS的方法应用于来自Chew-Kedem数据库的36个SSE元素.
- 人类遗传树被生成并与已建立的方法进行比较 (Clustal-Omega,LZ-Complexity,SED,TOPS+TOC).
- 这种新方法在构建家族遗传树以用于SSE比较方面表现出卓越的性能.
结论:
- 使用TOPS表示的开发的无对齐方法为蛋白质二次结构比较提供了有效的手段.
- 这种方法推进了蛋白质结构相似性的分析,并有助于家族遗传树的构建.
- 该方法为研究蛋白质结构和功能之间的关系的研究人员提供了一个有价值的替代方案.
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