多種類の亜鉛指タンパク質であるFOGは,エリトロイドおよびメガカリオサイトの分化における転写因子GATA-1のコファクターとして作用する
関連する実験動画
Updated: Jun 26, 2026
06:59
A Reverse Genetic Approach to Test Functional Redundancy During Embryogenesis
Published on: August 12, 2010
A P Tsang1, J E Visvader, C A Turner
1Children's Hospital and Dana-Farber Cancer Institute, Department of Pediatrics, Harvard Medical School, Boston, Massachusetts 02115, USA.
Cell
|July 11, 1997
まとめ
フレンド・オブ・GATA-1 (FOG) タンパク質は,重要な血液形成転写因子であるGATA-1と相互作用する. この相互作用は,赤血球およびメガカリオサイト細胞の発達と分化に不可欠です.
科学分野:
- 分子生物学は分子生物学である.
- ヘマトポエーシス (血液形成) とは
- トランスクリプション・ファクター規制
背景:
- GATA-1は,赤血球および大核細胞系統の発達のための重要な血液形成転写因子です.
- GATA-1の規制ネットワークを理解することは,血液細胞形成を理解するために不可欠です.
研究 の 目的:
- GATA-1と相互作用する新しいタンパク質を特定する.
- 交互作用するパートナーの機能的役割を解明する. 血液形成の微分化.
主な方法:
- GATA-1のDNA結合ドメインを使用した酵母2ハイブリッドシステムのスクリーニング.
- 胚の発達と特定の細胞タイプにおける共表現分析.
- 転写活性化アッセイと細胞分化研究.
主要な成果:
- GATA-1を結合する新しい亜鉛指タンパク質,Friend of GATA-1 (FOG) の特定.
- FOG結合は,GATA-1アミノ (N) 指に依存しています.
- FOGとGATA-1は,同調的に転写を活性化し,赤色素体とメガカリオサイトの分化に協力する.
結論:
- FOGは,血液形成の発達におけるGATA-1の重要なコファクターとして機能します.
- このGATA-1/FOG相互作用は,GATA因子による細胞タイプ特異の遺伝子調節のモデルを提供します.
関連する概念動画
02:16Transcription Factors
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
02:16Transcription Factors
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
02:04Co-activators and Co-repressors
Gene transcription is regulated by the synergistic action of several proteins that form a complex at a gene regulatory site. This is observed in eukaryotes, where the regulation of gene expression is a complex process. Regulatory proteins in eukaryotes can broadly be classified into two types – regulators that bind directly to specific DNA sequences and co-regulators that associate with regulatory proteins but cannot directly bind to the DNA. These co-regulators are further divided into...
02:23Master Transcription Regulators
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
01:30General Transcription Factors
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
02:23Master Transcription Regulators
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...