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相关概念视频

Nuclear Export of mRNA02:31

Nuclear Export of mRNA

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Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
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Nuclear Export of mRNA02:31

Nuclear Export of mRNA

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Regulation of Nuclear Protein Sorting01:45

Regulation of Nuclear Protein Sorting

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Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...
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Nuclear Protein Sorting01:34

Nuclear Protein Sorting

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Nuclear protein sorting is the selective trafficking of histones, polymerases, gene regulatory proteins into the nucleus and exporting RNAs and ribosomes to the cytosol. It is a tightly controlled process that regulates gene expression within a cell.
Proteins targeted to the nucleus carry nuclear localization signals or NLS recognized by import receptors in the cytosol. Similarly, proteins with nuclear export signals are recognized by export receptors. Import and export receptors are...
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Nonsense-mediated mRNA Decay02:27

Nonsense-mediated mRNA Decay

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The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual role, but they need to work in collaboration. Upf1 is an ATP-dependent RNA helicase that unwinds the RNA helix. Because Upf1 can unwind any RNA, Upf2 and Upf3 are required to help Upf1 discriminate between nonsense and normal mRNAs.
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
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相关实验视频

Updated: Jan 7, 2026

RNA Pull-down Procedure to Identify RNA Targets of a Long Non-coding RNA
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RNA Pull-down Procedure to Identify RNA Targets of a Long Non-coding RNA

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CNOT1有助于小型核非编码RNA的成熟.

Chisato Umehara1, Reika Sakurai1, Hiroaki Sako2

  • 1Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan.

Biochemical and biophysical research communications
|December 26, 2025
PubMed
概括
此摘要是机器生成的。

众所周知调节基因表达的CCR4-NOT复合体也可能控制小核非编码RNA的成熟. 这项研究表明,CNOT1子单元参与了这一新的监管作用.

关键词:
在 CCR4-NOT 中.没有编码的RNA.小型核非编码RNA在WGCNA中,WGCNA是WGCNA.斯诺RNA 斯诺RNA 是一种

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Defining the Program of Maternal mRNA Translation during In vitro Maturation using a Single Oocyte Reporter Assay
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相关实验视频

Last Updated: Jan 7, 2026

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09:36

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Published on: April 10, 2018

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Identification of RNAs Engaged in Direct RNA-RNA Interaction with a Long Non-Coding RNA
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科学领域:

  • 分子生物学分子生物学
  • 基因法规 基因法规
  • 在RNA生物学,RNA生物学.

背景情况:

  • CCR4-NOT复合体是mRNA命运的关键调节者,影响转录,翻译和降解.
  • 其全方位的细胞功能仍然不完全理解,促使人们对其新型作用进行研究.

研究的目的:

  • 探索CCR4-NOT复合物的潜在未知的功能.
  • 通过共同表达网络分析,调查CCR4-NOT调节小核非编码RNA (sncRNA) 生成的假设.

主要方法:

  • 协同表达网络分析被用来识别与CCR4-NOT子单元功能相关的基因.
  • 针对CNOT1进行了淘汰实验,以评估其对sncRNA水平的影响.
  • 为了阐明 CNOT1 作用机制,进行了涉及 RBM7 同抑制的救援实验.

主要成果:

  • 所有的CCR4-NOT子单元都与小型核非编码RNA生物发生的调节器具有高的共同表达.
  • Knockdown 的 CNOT1 导致了减少的 sncRNA 表达,独立于正规的 CCR4-NOT 功能.
  • 同时抑制RBM7挽救了sncRNA的减少,表明在处理或稳定方面发挥了作用.

结论:

  • 这些发现表明,CCR4-NOT复合体,特别是CNOT1子单元,在调节小核非编码RNA的成熟方面具有新的功能.
  • 这种调节作用似乎与复合体在mRNA代谢中的既定功能不同.