ニューロスポラミトコンドリアのプラズミドのDNA配列と遺伝的組織は,イントロンと移動要素との関係を示唆しています
Cell
|September 1, 1984
まとめ
研究者はNeurospora crassa Mauricevilleミトコンドリアのプラズミドを配列化し,タンパク質をコードする遺伝子を明らかにしました. この遺伝的要素は,ミトコンドリアDNAのイントロンの祖先かもしれない.
科学分野:
- 分子生物学は分子生物学である.
- 菌類学 菌類学とは
- 遺伝学 遺伝学とは
背景:
- Neurospora crassaミトコンドリアプラズミッド (Mauriceville株) は,ユニークな遺伝要素である.
- その生物学的機能と進化的起源は,まだ完全に理解されていない.
研究 の 目的:
- Neurospora crassa Mauricevilleミトコンドリアのプラズミッドの完全なニュクレオチド配列を決定するために.
- 潜在的なタンパク質コーディング領域を特定し,進化の洞察のための配列特性を分析する.
主な方法:
- 3581 bpのミトコンドリアプラズミドのDNAシーケンシング.
- オープン・リーディングフレーム (ORF) とコドン利用の分析.
- 保存された配列要素と既知の遺伝要素の比較.
主要な成果:
- ミトコンドリアプラズミドの完全な3581 bp配列が決定されました.
- 710アミノ酸の水性タンパク質をコードする長い開いた読み取りフレームが特定されました.
- コドンの使用と保存された配列は,グループIミトコンドリアDNA (mtDNA) イントロンとの関係を示唆しています.
- メジャートランスクリプトは,異質な5'エンドとメジャー3'エンドを持つ全長,コリネアRNAである.
結論:
- マウリセヴィルのプラズミッドには,潜在的に機能するタンパク質コーディング遺伝子が含まれています.
- 証拠によると,プラズミドは進化的にグループI mtDNAのイントロンと関連している.
- プラズミッドはmtDNAイントロンの祖先を代表する可能性があります.
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