HTLV-I レックス反応要素は,新しい形態のmRNAポリアデニレーションを媒介する
Y F Ahmed1, G M Gilmartin, S M Hanly
1Howard Hughes Medical Institute, Duke University Medical Center, Durham, North Carolina 27710.
Cell
|February 22, 1991
まとめ
HTLV-I RNAのレックス応答要素 (RexRE) は遺伝子発現を調節し,ポリアデニレーションに不可欠です. その折りたたみにより,重要な要素が結合し,3'最終処理のための核因子結合が可能になります.
科学分野:
- 分子生物学は分子生物学である.
- ウイルス学 ウイルス学 ウイルス学
- RNA 処理 RNA 処理
背景:
- ヒトTリンフォトロプウイルスI型 (HTLV-I) の遺伝子発現は,転写後の制御を受けます.
- レックスタンパク質とその応答要素 (RexRE) は重要な調節因子である.
- RexREは,3' LTR.のRNA幹ループ構造である.
研究 の 目的:
- HTLV-Iポリアデニレーションにおけるレックス反応要素 (RexRE) の役割を調査する.
- HTLV-Iトランスクリプトにおける3'端形成のメカニズムを解明する.
- ポリアデニレーションにおけるタンパク質とタンパク質の相互作用の役割を理解する.
主な方法:
- RNAの幹ループ構造の分析.
- 核因子結合に関する研究.
- レトロウイルスにおけるポリアデニレーションメカニズムの研究.
主要な成果:
- RexREは,HTLV-Iトランスクリプトのポリアデニレーションを独立して調節する.
- RexREの折り畳み式は,本質的なAAUAAAヘクサマーとGU豊富な元素を並べている.
- この折り畳みは,核因子の安定した結合を促進し,ポリ (A) サイトを処理にコミットします.
結論:
- HTLVファミリーのレトロウイルスにおける3'-エンド形成のための新しいメカニズムが提案されています.
- タンパク質とタンパク質の相互作用は,ポリアデニレーション反応に不可欠である.
- RexREは,遺伝子発現とポリアデニレーションを調節する2つの役割を果たしています.
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