翻译的表面测定 (SUnSET),一种基于西欧布洛特的方法,用于在体外评估蛋白质合成率
Marie Piecyk1, Joëlle Fauvre1, Cédric Duret1
1Centre de Recherche en Cancérologie de Lyon, INSERM U1052, CNRS 5286, Centre Léon Bérard, Université de Lyon, Université Claude Bernard Lyon 1, Lyon, France.
Bio-protocol
|February 21, 2024
概括
表面转化测定 (SUnSET) 方法为测量蛋白质合成速率提供了一个安全的,非放射性的替代方法. 这种技术使用了通过西部涂抹检测到的氨酸结合,简化了细胞研究中的转化率评估.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 蛋白质合成是一个关键的,能源密集的细胞过程,由各种因素调节.
- 蛋白质合成速率的变化对于细胞适应生理和病理条件至关重要.
- 测量蛋白质合成的传统方法使用放射性同位素,这给安全和处置带来了挑战.
研究的目的:
- 介绍和描述 SUrface SEnsing of Translation (SUnSET) 方法,作为评估蛋白质合成速率的非放射性替代方法.
- 为基于SUnSET方法的体外应用提供一个协议.
- 突出SUNSET方法在放射性技术上的优势.
主要方法:
- 在SUnSET方法中,使用了氨基酸转移RNA的结构模拟物 - - 纯米素.
- 在活性翻译过程中,普罗米辛被纳入延长的链.
- 使用西方涂抹技术检测出标有普罗米辛的.
主要成果:
- SUnSET 方法提供了对蛋白质合成速率的敏感测量.
- 检测氨酸的结合直接反映了正在进行的翻译活动.
- 这种方法避免了对放射性同位素的需求,提高了实验室的安全性并简化了程序.
结论:
- SUnSET 方法是一种简单,安全和有效的替代放射性测试,用于测量蛋白质合成速率.
- 这种技术有助于在各种生物环境中研究转化调节.
- 描述的协议可以在研究实验室中直接实现.
相关概念视频
Ribosome Profiling
3.5K
Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
3.5K
Improving Translational Accuracy
10.4K
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...
10.4K
Leaky Scanning
5.1K
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...
5.1K


