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Updated: May 20, 2026

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High-throughput Purification of Affinity-tagged Recombinant Proteins
Published on: August 26, 2012
レチノ酸受容体とTFIIDの間のトランザクティベーションにおける協力性には,E1Aに類似する活動が必要である
A Berkenstam1, M M Vivanco Ruiz, D Barettino
1EMBL, Gene Expression Program, Heidelberg, Germany.
Cell
|May 1, 1992
まとめ
レチノ酸 (RA) は,胚性がん細胞におけるRARβ2プロモーターの転写を活性化します. このプロセスは,RA受容体 (RAR) とヒトのTFIIDとの間の機能的な協力を含み,E1Aのような活動によって媒介されます.
科学分野:
- 分子生物学は分子生物学である.
- 遺伝子規制 遺伝子規制
- 細胞の微分化は
背景:
- レチノ酸 (RA) は細胞の分化に不可欠です.
- 胚性がん (EC) 細胞は,早期発達のモデルである.
- レチノ酸受容体β2 (RARβ2) プロモーターは,EC細胞におけるRAによって活性化される.
研究 の 目的:
- RARβ2プロモーターのRA誘発転写の分子メカニズムをEC細胞で調査する.
- この過程におけるTATAボックス結合タンパク質 (TFIID) とRA受容体 (RAR) の役割を明らかにする.
主な方法:
- ECおよびCOS細胞におけるトランスフェクション測定法.
- RARβ2プロモーター活性に関する分析.
- 再結合タンパク質発現と相互作用に関する研究.
主要な成果:
- 再結合ヒトTFIID (hTFIID) とRARは,EC細胞におけるRARβ2プロモーターのRA依存トランザクティベーションに協力する.
- hTFIIDのコアドメインは,RAR媒介の転写に十分である.
- ドロソフィラTFIIDは,酵母TFIIDではないが,hTFIIDを代用することができる.
- COS細胞におけるhTFIIDとRARの協力には,E1Aタンパク質の子宮外発現が必要である.
結論:
- 活性化されたRARがEC細胞におけるE1Aのような活性を通じてhTFIIDと相互作用し,RARβ2プロモーター転写を調節するモデルが提案されています.
- この相互作用は,RAが誘発したEC細胞の分化に不可欠である.
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