相关实验视频

Updated: Feb 14, 2026

Optical Tweezers to Study RNA-Protein Interactions in Translation Regulation

Optical Tweezers to Study RNA-Protein Interactions in Translation Regulation

Published on: February 12, 2022

RNA结合蛋白 OsGRP3 积极调节大米的储存能力

Dongxu Wen^1,2, Naibin Zhang^1,2, Jiahui Shi^1,2

¹College of Biology, Chongqing Research Institute, Hunan University, Changsha 410082, China.

Plants (Basel, Switzerland)

|February 13, 2026

概括

OsGRP3蛋白在储存期间改善了米种子的寿命和生存能力. 这种RNA结合蛋白增强了发芽和应激准备,为更好的种子储存能力提供了遗传点.

科学领域:

植物生物学植物生物学
分子生物学分子生物学
遗传学是一个遗传学.

背景情况:

种子老化对粮食安全和生殖质保护构成重大挑战.
对于存储后发芽至关重要的长寿命mRNA的稳定性尚不清楚.
RNA结合蛋白在调节mRNA稳定性和种子寿命方面发挥着至关重要的作用.

研究的目的:

确定大米中种子储存能力的关键调节剂.
为了研究RNA结合蛋白OsGRP3在米种子老化的作用.
探索OsGRP3增强种子生存能力的分子机制.

主要方法:

植物遗传学分析以确定阿拉比多普西斯AtGRP7.7的米类同类物种.
产生和分析OsGRP3过度表达的米线.
生理学评估 (MDA水平,电解质泄漏) 和RNA测序 (RNA-seq).

主要成果:

在人工老化后,OsGRP3过度表达显著改善了发芽率和种子活力.
OsGRP3减轻了与衰老相关的损伤,保持了膜完整性.
OsGRP3减弱了因衰老引起的转录破坏,并为应激准备重新编程了基因表达.

结论:

OsGRP3是一种保存的RNA结合蛋白,可以积极调节大米种子的储存能力.
OsGRP3通过减轻衰老损伤和保持转录完整性来提高种子的活力.
OsGRP3 是一个有前途的基因标,可以提高米的种子存储耐受性.

关键词:

在 OsGRP3 里面.长寿的mRNA可以长期存在.米的储存能力.种子活力,种子活力.

更多相关视频

Novel RNA-Binding Proteins Isolation by the RaPID Methodology

Novel RNA-Binding Proteins Isolation by the RaPID Methodology

Published on: September 30, 2016

An Assay for Quantifying Protein-RNA Binding in Bacteria

An Assay for Quantifying Protein-RNA Binding in Bacteria

Published on: June 12, 2019

相关概念视频

Positive Regulator Molecules

Positive Regulator Molecules

To consistently produce healthy cells, the cell cycle—the process that generates daughter cells—must be precisely regulated.

Positive Regulator Molecules

Positive Regulator Molecules

Mitotic cell division results in daughter cells that exactly resemble the parent cell. However, errors in the DNA replication or distribution of genetic material may lead to genetic mutations that may be passed down to every new cell formed from the resulting abnormal cell. Propagation of such mutant cells is restricted through checkpoint mechanisms present at different stages of the cell cycle. These checkpoints involve regulator molecules that either promote or demote cell cycle events.

Cooperative Binding of Transcription Regulators

Cooperative Binding of Transcription Regulators

Transcriptional regulators bind to specific cis-regulatory sequences in the DNA to regulate gene transcription. These cis-regulatory sequences are very short, usually less than ten nucleotide pairs in length. The short length means that there is a high probability of the exact same sequence randomly occurring throughout the genome. Since regulators can also bind to groups of similar sequences, this further increases the chances of random binding. Transcriptional regulators form...

Cooperative Binding of Transcription Regulators

Cooperative Binding of Transcription Regulators

RNA Polymerase II Accessory Proteins

RNA Polymerase II Accessory Proteins

Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...

Regulated Protein Degradation

Regulated Protein Degradation

It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...