アクティベータータンパク質とRNAポリメラーゼIIの転写装置の間の新しい媒介体です
R J Kelleher1, P M Flanagan, R D Kornberg
1Department of Cell Biology, Fairchild Center, Stanford University School of Medicine, California 94305.
Cell
|June 29, 1990
まとめ
遺伝子活性化タンパク質は,真核細胞の相互の機能に干渉することがあります. 新しい酵母因子は,この干渉を逆転させ,転写活性化を媒介することを示唆しています.
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
- ユカリオットのトランスクリプション
背景:
- 遺伝子活性化タンパク質は,DNAに結合し,転写機構を勧誘することによって,遺伝子発現を調節する.
- 異なる遺伝子活性化剤の間の干渉が発生し,細胞プロセスに影響を与える可能性があります.
- これらの相互作用を理解することは,遺伝子調節機構の解読に不可欠です.
研究 の 目的:
- ユカリオット細胞におけるアクティベーター干渉の現象を調査する.
- 遺伝子活性化タンパク質の相互作用の調節に関与する要因を特定する.
- アクティベータの干渉を調節するメカニズムを解明する.
主な方法:
- ハイブリッドの酵母-ヘルペス遺伝子活性化タンパク質の構築と試験.
- アクティベータ干渉を研究するためのインビトロ転写アッセイ.
- 干渉を逆転させる酵母成分の生化学的浄化.
主要な成果:
- ハイブリッドの遺伝子アクティベータータンパク質は,酵母における特定のDNA要素による転写活性化を抑制することが示されました.
- この活性化器の干渉は,in vitro実験で再現可能であった.
- RNAポリメラーゼIIや他の転写因子とは異なる部分的に浄化された酵母成分が,干渉を逆転させた.
結論:
- アクティベーター干渉は,真核生物の遺伝子調節における実証可能な生物学的プロセスである.
- 新しい酵母因子がアクティベーター干渉を調節する役割を果たしています.
- この新しい要因は,おそらく転写活性化プロセスを媒介し,新しい規制メカニズムを強調します.
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