通过破坏π堆叠来对RNA结构进行光化学控制
Marino J E Resendiz1, Arne Schön, Ernesto Freire
1Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States.
Journal of the American Chemical Society
|July 26, 2012
概括
一种新的可光标核酸探针,硫化1 (aryl sulfide 1),可以快速生成5-甲基尤里丁,从而能够精确地控制RNA结构,如生化研究中的核酸开关.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 化学生物学 化学生物学
背景情况:
- 光性核酸是研究核酸结构和功能的宝贵工具.
- 现有的探头通常需要多次修改,或者产品形成缓慢,限制了它们的动力应用.
- 生物化学过程的调节可以使用基于核酸的工具来实现.
研究的目的:
- 开发一种新型的可照性核酸探针,用于调节核酸结构.
- 评估光解后产品形成的效率和动力学.
- 为了研究探头在控制RNA折叠方面的实用性,特别是用于 рибо开关.
主要方法:
- 硫化的合成和表征 1. 硫化的合成和表征
- 在350nm处对硫化1的光解.
- 使用探头评估RNA结构和折叠动态.
- 研究光解后的5-甲基尤里丁的形成.
主要成果:
- 硫化1的光解产生了大量的5-甲基尤里丁.
- 产品形成很快,在微秒内完成.
- 硫化1有效地抑制了RNA发针的形成和核糖开关的折叠.
- 光解恢复了正确的RNA折叠.
- 5-甲基尤里丁的形成发生在一个基因中.
结论:
- 硫化1是一种有效的新工具,用于调节RNA结构.
- 探测器的快速产物形成使其适合动力学研究.
- 控制 рибо开关折叠的能力突出了其在生物化学调节方面的潜力.
相关概念视频
RNA Stability
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
RNA Stability
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
Types of RNA
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA Performs Diverse...
RNA Performs Diverse...
Types of RNA
Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
RNA Interference
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
RNA Interference
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...


