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相关概念视频

Conservative Site-specific Recombination and Phase Variation02:53

Conservative Site-specific Recombination and Phase Variation

Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
The Supercomplexes in the Crista Membrane01:41

The Supercomplexes in the Crista Membrane

The mitochondrial cristae membrane is the primary site for the oxidative phosphorylation (OXPHOS) process of energy conversion mediated through respiratory complexes I to V. These complexes have been widely studied for decades, and it has been proven that they form supramolecular structures called respiratory supercomplexes (SC). These higher-order complexes may be crucial in maintaining the biochemical structure and improving the physiological activity of the individual complexes while...
Rab Proteins01:14

Rab Proteins

Rab proteins constitute the largest family of monomeric GTPases, of which 70 members are present in humans. Rab proteins and their effectors regulate consecutive stages of vesicle transport such as vesicle transport, docking, and fusion to the correct recipient membrane.
Rab proteins switch between a cytosolic, GDP-bound inactive state and a membrane-anchored, GTP-bound active state. By themselves, Rabs show slow rates of GDP/GTP exchange and GTP hydrolysis. Thus, Rab proteins are considered...
Assembly of Signaling Complexes01:30

Assembly of Signaling Complexes

Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...

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相关实验视频

Updated: Jul 16, 2026

Examining Proteasome Assembly with Recombinant Archaeal Proteasomes and Nondenaturing PAGE: The Case for a Combined Approach
09:57

Examining Proteasome Assembly with Recombinant Archaeal Proteasomes and Nondenaturing PAGE: The Case for a Combined Approach

Published on: December 17, 2016

在结合体激活过程中,Prp19p相关复合体

Shih-Peng Chan1, Der-I Kao, Wei-Yü Tsai

  • 1Institute of Microbiology and Immunology, National Yang-Ming University, Shih-Pai, Taiwan, Republic of China.

Science (New York, N.Y.)
|September 13, 2003
PubMed
概括

与Prp19p相关的复合体对结合体激活至关重要,稳定U5和U6RNAs. 这种复合物促进了U6和内子序列之间的动态相互作用,涉及Spliceosome组装中的Sm类蛋白质.

科学领域:

  • 分子生物学分子生物学
  • 在RNA生物学,RNA生物学.
  • 生物化学 生物化学

背景情况:

  • 结合体激活涉及重要的结构重组.
  • 释放U1和U4小核RNA (snRNA) 和 Prp19p相关复合物的添加是关键事件.

研究的目的:

  • 研究Prp19p关联复合体在结合体激活中的作用.
  • 阐明U6 snRNA和Sm样蛋白在结合体组装中的参与机制.

主要方法:

  • 紫外线交叉连接分析.
  • 在spliceosome激活期间对RNA-蛋白相互作用的分析.
  • 研究U6小核核核糖核蛋白颗粒的结构动态.

主要成果:

  • Prp19p关联复合物稳定了U4解离后的U5和U6snRNA.
  • 确定了U6 snRNA与5'拼接部位的基配对的两种模式,其中一个交换机取决于Prp19p复合体.
  • Prp19p在U6上破坏了Sm样蛋白的稳定,促进了与内子的相互作用,并表明在结合体激活中发挥了作用.

结论:

  • 与Prp19p相关的复合体对于稳定的结合体形成至关重要.

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Examining Proteasome Assembly with Recombinant Archaeal Proteasomes and Nondenaturing PAGE: The Case for a Combined Approach
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The Development and Application of Biophysical Assays for Evaluating Ternary Complex Formation Induced by Proteolysis Targeting Chimeras (PROTACS)

Published on: January 12, 2024

  • 由Prp19p调节的U6 snRNA和Sm样蛋白的动态相互作用对结合体激活至关重要.