鉴定SIRT1基因中最有害的非同义SNP及其对功能和结构特征的影响 - - 一种"in silico"分析
Desy Thayyil Menambath1, Usha Adiga1, Tirthal Rai1
1Biochemistry, KS Hegde Medical Academy, NITTE (DU), Mangalore, Karnataka, 575018, India.
F1000Research
|January 29, 2024
概括
沉默交配类型信息调节2同类1 (SIRT1) 基因中的三个特定的非同义单核酸多态 (nsSNP) 被确定为最具破坏性的. 这些遗传变异可以改变SIRT1蛋白质的结构和功能,可能导致各种疾病.
科学领域:
- 遗传学和生物信息学
- 分子生物学分子生物学
- 计算生物学 计算生物学
背景情况:
- 无声交配类型信息调节2同位素1 (SIRT1) 蛋白质对于调节细胞过程至关重要,并与许多疾病有关,包括糖尿病,癌症和神经退行性疾病.
- 遗传变异,特别是非同义单核酸多态 (nsSNP),可以显著影响蛋白质功能,并有助于疾病的发病.
- 了解SIRT1 nsSNPs的功能后果对于阐明疾病机制和开发治疗策略至关重要.
研究的目的:
- 通过计算识别和分析nsSNP在人类SIRT1基因中的功能影响.
- 用生物信息学工具研究特定的nsSNP如何影响SIRT1蛋白质结构,稳定性和相互作用.
- 确定SIRT1中可能导致疾病发展的最有害的nsSNP.
主要方法:
- 从dbSNP数据库中收集了SIRT1的nsSNP.
- 利用生物信息学工具,包括SIFT,普罗文和I-Mutant来预测nsSNP的有害性.
- 使用HOPE服务器和I-Tasser进行功能和结构效应分析,以及用于基因相互作用预测的STRING.
主要成果:
- 分析发现了三个高度有害的nsSNP:rs769519031 (I4T),rs778184510 (D357A) 和rs199983221 (I223S).
- 希望建模表明nsSNP I4T和I223S降低了蛋白质的疏水性,可能会损害相互作用.
- 与野生类型相比,nsSNP D357A导致蛋白质疏水性增加.
结论:
- 该研究确定D357A,I223S和I4T是SIRT1基因中最具破坏性的nsSNP.
- 这些已识别的nsSNP可以导致SIRT1蛋白结构和功能的显著改变.
- 这些发现为SIRT1相关疾病的分子基础提供了关键的见解,并可以指导未来对疾病发病因子的研究.
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