接近同类的tRNA在模拟的核糖体中主导着密码子解码时间
Fabio Hedayioglu1, Emma J Hargreaves2, Sathishkumar Kurusamy2
1Kent Fungal Group, School of Natural Sciences, University of Kent, Canterbury CT2 7NJ, United Kingdom.
Nucleic acids research
|November 8, 2025
概括
传递 RNA 编码子序列影响蛋白质合成. 我们的计算模型显示tRNA的丰富性,包括近亲类的tRNA,显著影响代码子解码时间,与实验数据保持一致.
科学领域:
- 分子生物学分子生物学
- 计算生物学 计算生物学
- 遗传学 是一个遗传学.
背景情况:
- 使者RNA (mRNA) 编码子序列对于调节基因表达至关重要.
- 核糖体动力学,翻译控制和mRNA稳定性受到密码子序列的影响.
- 了解代码解码过程对于理解基因表达调节至关重要.
研究的目的:
- 开发和应用先进的计算建模工具来研究tRNA物种对编码体解码的影响.
- 为了研究子解码时间对同源,近同源和非同源tRNAs丰富性的敏感性.
- 通过将其预测与实验性核糖体足迹数据进行比较来验证计算模型.
主要方法:
- 利用计算建模来模拟代码解码过程.
- 包含了来自Saccharomyces cerevisiae的tRNA丰度数据.
- 在模型中准确地定义了近同源tRNA.
- 使用高质量的tRNA丰度数据集的参数化模型.
- 模拟的密码解码时间与实验确定的核糖体停留时间从核糖体足迹进行了比较.
主要成果:
- 模拟的密码解码时间对相关的,接近的和非相关的tRNAs的丰富性敏感.
- 准确定义近同类tRNA的模型,并与高质量的tRNA丰度数据进行参数化,产生了与实验性核糖体停留时间非常相似的预测.
- 这项研究证实了近同类tRNA在代码解码中的重要作用.
结论:
- 开发的计算建模工具对于研究代码解码过程非常准确.
- 近同源tRNAs在调节密码子解码时间和因此转化控制方面发挥着至关重要的作用.
- 这项工作为研究tRNA丰富度,编码子使用和基因表达之间的复杂关系提供了有价值的工具.
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