分子クローン,原発構造,ヒト成長因子活性化Na+/H+アンチポーターの発現
C Sardet1, A Franchi, J Pouysségur
1Centre de Biochimie-CNRS, Université de Nice, France.
Cell
|January 27, 1989
まとめ
研究者らは,ヒトのアミロライド感受性ナトリウム水素反ポーター (Na+/H+反ポーター) 遺伝子を配列化した. このトランスポーターは,細胞内pHを調節し,欠乏した細胞の細胞機能を回復するために不可欠です.
科学分野:
- 分子生物学は分子生物学である.
- 細胞生物学 細胞生物学
- バイオケミストリー バイオケミストリー
背景:
- アミロライドに敏感なナトリウム-水素反ポーター (Na+/H+反ポーター) は,細胞のpHホメオスタシスに重要な役割を果たします.
- このトランスポーターの分子基盤を理解することは,様々な生理学的プロセスに不可欠です.
研究 の 目的:
- ヒトのアミロライドに敏感なNa+/H+アンチポーターの完全なcDNA配列を決定する.
- Na+/H+アンチポーターの構造と機能を特徴づける.
主な方法:
- ネズミの線維芽細胞変異体における遺伝子転送と機能的補完.
- ゲノムプローブとcDNAライブラリを隔離する.
- DNAシーケンシングとバイオインフォマティック分析.
- 欠陥細胞におけるトランスフェクトされたcDNAの安定表現.
主要な成果:
- 人間のNa+/H+アンチポーターの完全なcDNA配列が決定されました.
- 予測されたタンパク質の分子量は99,354Daで,10のトランスメブランセグメントと水性性サイトプラズミック・テールがあります.
- cDNAの安定的な発現は,H+の流入,アミロライド感受性,pH調節を含むNa+/H+アンチポーター機能を回復させた.
結論:
- この研究は,ヒトのアミロライドに敏感なNa+/H+アンチポーターの完全な配列と機能的特徴を提供します.
- この発見は,この重要なイオントランスポーターの分子構造と重要な機能的属性を明らかにします.
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