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Following Cell-fate in E. coli After Infection by Phage Lambda
Published on: October 14, 2011
E. coli K12の外部膜タンパク質であるラムダ受容体の遺伝子配列
1Unité de Programmation Moléculaire et Toxicologie, Génétique CNRS LA 271, INSERM U. 163 Institut Pasteur, Paris, France.
Cell
|December 1, 1981
まとめ
研究者はエシェリキア・コライK12lamB遺伝子の配列を解析し,ラムダ受容体のDNA配列を明らかにした. この分析は,タンパク質の洞察力を提供します.
科学分野:
- 分子生物学は分子生物学である.
- 微生物の遺伝学
- タンパク質の構造 タンパク質の構造
背景:
- Escherichia coli K12のラムダ受容体は,様々な機能に関与する重要な外膜タンパク質です.
- その前駆体タンパク質は,lamB遺伝子によってコードされ,輸出過程で割れ目に遭います.
研究 の 目的:
- Escherichia coli K12 lamB遺伝子の完全なDNA配列を決定するために.
- 構造的特徴の配列と,それがラムダ受容体の機能と局所化に及ぼす影響を分析する.
主な方法:
- lamB遺伝子のDNAシーケンスとその遠隔領域.
- タンパク質特性とmRNA構造を予測するためのDNA配列のバイオ情報分析.
主要な成果:
- lamBのDNA配列が決定され,繰り返しおよびパリンドロミックな配列が明らかになりました.
- ラムダ受容体は,計算された分子量47,400の421のアミノ酸で構成され,充電されたアミノ酸の割合が高くなります.
- lamBのダウンストリームの遺伝子,モラ (molA) は,輸出されたタンパク質の特徴を持つ131アミノ酸ペプチドをコードしています.
結論:
- lamB遺伝子配列は,ラムダ受容体の構造-機能関係を理解するための基礎を提供します.
- 特定された配列の特徴は,安定したmRNA二次構造の可能性を示唆しています.
- 隣接するmolA遺伝子の特徴化は,E. coli.における外膜タンパク質の輸出に関する知識を広げています.
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