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开发一个In Silico平台 (TRIPinRNA),用于识别新型RNA分子内三环螺旋体,并使用生物物理技术验证它们
Isha Rakheja1,2, Vishal Bharti1, S Sahana1,2
1CSIR-Institute of Genomics & Integrative Biology, Mathura Road, Delhi 110025, India.
Biochemistry
|December 13, 2024
概括
研究人员使用TRIPinRNA工具在人类转录组中发现了众多RNA分子内三重螺旋体. 这一发现扩大了我们对RNA结构及其在生物学中的潜在作用的理解.
科学领域:
- 分子生物学分子生物学
- 生物信息学是一种生物信息学.
- 基因组学就是基因组学.
背景情况:
- 在人体转录组中,RNA分子内三重螺旋是罕见的.
- 已知的结构主要是长非编码RNA (lncRNA) 的稳定元素.
- 它们发生的全部范围在很大程度上仍未被探索.
研究的目的:
- 为了全面搜索人类转录组,寻找潜在的RNA三重螺旋形态.
- 为了研究正规和非正规的三环螺旋结构.
- 用生物物理方法验证发现.
主要方法:
- 开发和应用TRIPinRNA,一个基于Python的in silico平台.
- 在人类转录组 (编码和非编码区域) 进行序列模式搜索.
- 预测三重形状的生物物理验证.
主要成果:
- 在人类转录组中识别假定规范性和非规范性RNA三环螺旋.
- 观察到三倍体发生与局部GC含量之间存在强烈的相关性.
- 通过生物物理方法验证了两种三重体类型的形成.
结论:
- RNA分子内三环螺旋比以前认为的更为普遍.
- TRIPinRNA平台促进了对这些结构的全面发现.
- 这项研究增强了对RNA生物学和结构功能关系的理解.
相关概念视频
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...
piRNA - Piwi-interacting RNAs
PIWI-interacting RNAs, or piRNAs, are the most abundant short non-coding RNAs. More than 20,000 genes have been found in humans that code for piRNAs while only 2000 genes have been found for miRNAs. piRNAs can act at the transcriptional and post-transcriptional levels and have a vital role in silencing transposable elements present in germ cells. They are also involved in epigenetic silencing and activation. Previously, they were thought to function only in germ cells but new evidence suggests...
Experimental RNAi
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...

