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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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関連する実験動画

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

スプライソーム活性化におけるPrp19p関連複合体

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
まとめ

Prp19p関連複合体は,Spliceosomeの活性化に不可欠であり,U5とU6のRNAを安定させています. この複合体は,U6とイントロン配列の間のダイナミックな相互作用を促進し,SpliceosomeアセンブリにおけるSmのようなタンパク質を巻き込みます.

科学分野:

  • 分子生物学は分子生物学である.
  • RNA 生物学 RNA 生物学
  • バイオケミストリー バイオケミストリー

背景:

  • スプライソームの活性化には,重要な構造的再編成が含まれます.
  • U1およびU4小核RNA (snRNA) の放出とPrp19p関連複合体の添加は,重要なイベントです.

研究 の 目的:

  • スプライソーム活性化におけるPrp19p関連複合体の役割を調査する.
  • スプライソーム組立におけるU6 snRNAとSm型タンパク質の関与のメカニズムを解明する.

主な方法:

  • 紫外線クロスリンク分析.
  • スプライソーム活性化中のRNA-タンパク質相互作用の分析.
  • U6小核リボ核タンパク質粒子の構造動態を研究する.

主要な成果:

  • Prp19p関連複合体は,U4解離後のU5とU6のsnRNAを安定させる.
  • 5'スプライス部位とU6snRNAの塩基配列の2つのモードが特定され,スイッチはPrp19p複合体に依存している.
  • Prp19pは,U6のSm型タンパク質を不安定化し,イントロンとの相互作用を促進し,スプライセソーム活性化における役割を果たしていることを示しています.

さらに関連する動画

CAPRRESI: Chimera Assembly by Plasmid Recovery and Restriction Enzyme Site Insertion
07:37

CAPRRESI: Chimera Assembly by Plasmid Recovery and Restriction Enzyme Site Insertion

Published on: June 25, 2017

The Development and Application of Biophysical Assays for Evaluating Ternary Complex Formation Induced by Proteolysis Targeting Chimeras (PROTACS)
07:22

The Development and Application of Biophysical Assays for Evaluating Ternary Complex Formation Induced by Proteolysis Targeting Chimeras (PROTACS)

Published on: January 12, 2024

関連する実験動画

Last 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

CAPRRESI: Chimera Assembly by Plasmid Recovery and Restriction Enzyme Site Insertion
07:37

CAPRRESI: Chimera Assembly by Plasmid Recovery and Restriction Enzyme Site Insertion

Published on: June 25, 2017

The Development and Application of Biophysical Assays for Evaluating Ternary Complex Formation Induced by Proteolysis Targeting Chimeras (PROTACS)
07:22

The Development and Application of Biophysical Assays for Evaluating Ternary Complex Formation Induced by Proteolysis Targeting Chimeras (PROTACS)

Published on: January 12, 2024

結論:

  • Prp19p関連複合体は,安定したスプライソーム形成に不可欠である.
  • Prp19pによって調節されるU6 snRNAとSm型タンパク質のダイナミックな相互作用は,スプライソームの活性化に極めて重要です.