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関連する概念動画

Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

944
The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
944
Regulation of Expression Occurs at Multiple Steps02:24

Regulation of Expression Occurs at Multiple Steps

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3.1K
Constitutive and Regulated Gene Expression01:27

Constitutive and Regulated Gene Expression

42
Gene expression in prokaryotes is governed by constitutive and regulated systems, allowing cells to balance the production of essential proteins with adaptive responses to environmental changes.Constitutive Gene ExpressionConstitutive, or housekeeping, genes are continuously expressed as they encode proteins vital for fundamental cellular processes. These include enzymes for glycolysis, ribosomal components for protein synthesis, and proteins involved in DNA replication. Their constant...
42
Combinatorial Gene Control02:33

Combinatorial Gene Control

8.4K
Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
8.4K
Genetic Screens02:46

Genetic Screens

5.0K
Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing  genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which...
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Cell Specific Gene Expression01:58

Cell Specific Gene Expression

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関連する実験動画

Updated: Jul 22, 2025

Inherent Dynamics Visualizer, an Interactive Application for Evaluating and Visualizing Outputs from a Gene Regulatory Network Inference Pipeline
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孤児の品質管理はネットワークのダイナミクスと遺伝子発現を形作る

Kevin G Mark1, SriDurgaDevi Kolla1, Jacob D Aguirre2

  • 1Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley, CA, USA.

Cell
|July 21, 2023
PubMed
まとめ

E3リガゼUBR5は,ペアリングされていない転写因子サブユニットを分解し,細胞運命を決定し,遺伝子発現に不可欠なダイナミックなタンパク質ネットワークを確立します. この孤児の品質管理メカニズムは 環境信号に対する細胞の反応性を維持します

キーワード:
MCRS1 についてMYC についてUBR5 について枝分かれしたユビキチン鎖孤児の品質管理プロテアソーム幹細胞転写因子ユビキチン

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Mapping the Structure-Function Relationships of Disordered Oncogenic Transcription Factors Using Transcriptomic Analysis
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Mapping the Structure-Function Relationships of Disordered Oncogenic Transcription Factors Using Transcriptomic Analysis

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A Combinatorial Single-cell Approach to Characterize the Molecular and Immunophenotypic Heterogeneity of Human Stem and Progenitor Populations
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A Combinatorial Single-cell Approach to Characterize the Molecular and Immunophenotypic Heterogeneity of Human Stem and Progenitor Populations

Published on: October 25, 2018

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関連する実験動画

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Inherent Dynamics Visualizer, an Interactive Application for Evaluating and Visualizing Outputs from a Gene Regulatory Network Inference Pipeline
10:44

Inherent Dynamics Visualizer, an Interactive Application for Evaluating and Visualizing Outputs from a Gene Regulatory Network Inference Pipeline

Published on: December 7, 2021

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Mapping the Structure-Function Relationships of Disordered Oncogenic Transcription Factors Using Transcriptomic Analysis
09:58

Mapping the Structure-Function Relationships of Disordered Oncogenic Transcription Factors Using Transcriptomic Analysis

Published on: June 27, 2020

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A Combinatorial Single-cell Approach to Characterize the Molecular and Immunophenotypic Heterogeneity of Human Stem and Progenitor Populations
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A Combinatorial Single-cell Approach to Characterize the Molecular and Immunophenotypic Heterogeneity of Human Stem and Progenitor Populations

Published on: October 25, 2018

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科学分野:

  • 分子生物学
  • セルラー信号
  • タンパク質の分解経路

背景:

  • ユカリオット細胞は 細胞運命を決定するために 複雑なタンパク質ネットワークに依存しています
  • これらのネットワークにおける機能不良のタンパク質の相互作用は様々な病気と関連しています.
  • これらのネットワークの構成とダイナミクスを支配するメカニズムは完全に理解されていません.

研究 の 目的:

  • 転写規制ネットワークの構成と動態を規制するシグナルハブを特定する.
  • タンパク質ネットワークホメオスタシスにおける E3 リガース UBR5 の役割を調査する.
  • タンパク質の分解が ダイナミックな遺伝子発現にどのように貢献するのかを理解する.

主な方法:

  • タンパク質とタンパク質の相互作用を特徴づけるための生化学的測定
  • 結合インターフェースを決定するための構造分析.
  • c-Mycに関連するものを含め,転写レギュレータの調節におけるUBR5の役割を調査する.

主要な成果:

  • UBR5は,トランスクリプションレギュレータのペア化されていないサブユニットを劣化させるシグナルハブとして特定されました.
  • UBR5は,複雑な解離後にのみ暴露された特定のモチーフに結合します.
  • UBR5によるペア化されていないサブユニットの急速な回転は,ダイナミックなタンパク質の相互作用を促進します.

結論:

  • ダイナミックなタンパク質ネットワークの確立には,UBR5が媒介する孤児の品質管理が不可欠です.
  • この過程で細胞は 遺伝子発現と環境反応のバランスをとることができます
  • UBR5の役割を理解することで,異常遺伝子発現に関連した疾患に対する潜在的な治療戦略が提供されます.