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鳥のゲノム解析は,進化のユニークなサインを明らかにしています
Wesley C Warren1, LaDeana W Hillier, Jennifer A Marshall Graves
1Genome Sequencing Center, Washington University School of Medicine, Campus Box 8501, 4444 Forest Park Avenue, St Louis, Missouri 63108, USA. wwarren@wustl.edu
Nature
|May 10, 2008
まとめ
鳥のゲノムは,そのユニークな爬虫類と哺乳類の特徴を説明する遺伝的革新を明らかにしています. このモノトレーム配列は,毒,牛乳生産,免疫システムの進化についての洞察を提供します.
科学分野:
- ゲノミクスゲノミクスとは
- 進化生物学の進化生物学について
- 哺乳類の遺伝学について
背景:
- オルティプス (Ornithorhynchus anatinus) は,爬虫類と哺乳類の特徴を混合したユニークなモノトレムである.
- これには,卵の産卵,雄の毒の産生,雌の哺乳などがあり,進化論的な疑問を投げかけている.
研究 の 目的:
- 牛のゲノム配列の草稿を提示する.
- 独特の生物学的特徴の遺伝的基盤を特定する.
- 比較哺乳類ゲノミクスのためのリソースを提供すること.
主な方法:
- Ornithorhynchus anatinus.の全ゲノムシーケンシングについて
- タンパク質をコードする遺伝子,非コーディングRNA,マイクロRNAを含む遺伝子ファミリーのバイオ情報分析.
- 他の脊椎動物との比較ゲノム分析.
主要な成果:
- 爬虫類に似た,毒の産生のための,コオプットされた遺伝子ファミリーの識別.
- 卵を産むにもかかわらず,保存された牛乳タンパク質遺伝子の確認.
- プラティプスの生物学と関連した拡張免疫遺伝子ファミリーの発見.
- タンパク質,RNA,および重複要素ファミリーの拡張の特徴.
結論:
- 鳥のゲノムは,その特徴のモザイクのための遺伝的基礎を提供します.
- 毒の独立した進化と哺乳期遺伝子の保存を強調しています.
- このゲノム資源は,哺乳類の進化とモノトレームの保全を理解するために極めて重要です.
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