连续光检测用于与非正规氨基酸相容的体外翻译
Gianna N Kerestesy1,2, Kara K Dods1,2, Clinton A L McFeely1,2
1Chemistry, Virginia Commonwealth University, 1001 W Main Street, Richmond, 23220 Virginia, United States.
ACS synthetic biology
|January 9, 2024
概括
科学家们开发了一种新的连续光试验,以快速评估非正规氨基酸 (ncAA) 在体外的结合. 这种方法加速了用于药物发现和合成生物学应用的翻译组件的优化.
科学领域:
- 生物化学和分子生物学
- 合成生物学 合成生物学
- 药物发现 药物发现 药物发现
背景情况:
- 翻译装置能够结合非正规氨基酸 (ncAAs) 的能力对于生成用于药物发现的多样化库至关重要.
- 目前用于评估ncAA纳入的方法,如放射性测定和质谱,耗时且限制了高通量分析.
- 使用光蛋白的现有连续体外翻译试验不适合ncAA测试,因为它们依赖于正规氨基酸.
研究的目的:
- 开发一种用于体外翻译的新型连续光检测方法,与非正规氨基酸结合相兼容.
- 为了实现高通量评估和优化翻译组件的ncAA整合.
- 为促进用于药物发现和合成生物学应用的翻译装置的工程.
主要方法:
- 基于使用亲和蛋白检测短标签的连续光试验的开发.
- 亲和蛋白在与标记的结合时表现出改变的光特性,信号翻译.
- 在384个井格式中执行测试,以快速,高通量选.
主要成果:
- 该试验成功验证了在体外翻译过程中各种非正规氨基酸 (ncAA) 的结合.
- 该试验使得能够快速确定多个大肠杆菌tRNA的编码子读取特异性.
- 在384井格式中证明了试验的实用性,以进行高效的选和优化.
结论:
- 开发的连续光测定提供了一种快速有效的方法来评估ncaa在体外的纳入.
- 这种测试显著提高了优化翻译组件和选ncAAs的能力.
- 该试验预计将加速用于药物发现和合成生物学的翻译系统的工程.
相关概念视频
Improving Translational Accuracy
10.5K
Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
10.5K
Initiation of Translation
33.0K
Initiating translation is complex because it involves multiple molecules. Initiator tRNA, ribosomal subunits, and eukaryotic initiation factors (eIFs) are all required to assemble on the initiation codon of mRNA. This process consists of several steps that are mediated by different eIFs.
First, the initiator tRNA must be selected from the pool of elongator tRNAs by eukaryotic initiation factor 2 (eIF2). The initiator tRNA (Met-tRNAi) has conserved sequence elements including modified bases at...
First, the initiator tRNA must be selected from the pool of elongator tRNAs by eukaryotic initiation factor 2 (eIF2). The initiator tRNA (Met-tRNAi) has conserved sequence elements including modified bases at...
33.0K
Protein Dynamics in Living Cells
2.1K
Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
2.1K


