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ゲノムエラーの値を超える突然変異率でスケーラブルで継続的な遺伝子の進化
Arjun Ravikumar1, Garri A Arzumanyan1, Muaeen K A Obadi1
1Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92697, USA.
Cell
|November 13, 2018
まとめ
誘導進化はオーソレプによって強化され 酵母システムにより 急速な高通量遺伝子変異と進化が可能になります このスケーラブルなツールは 生物分子の機能と適応の研究を加速します
科学分野:
- 生物化学
- 分子生物学
- 合成生物学
背景:
- 誘導進化は生物分子を設計し 適応を理解するために不可欠です
- 現在の方法は労働集約的で低通量であり,複雑な機能研究を制限しています.
- 分子進化の複製研究は,既存の技術で困難です.
研究 の 目的:
- 生物の進化を誘導する スケーラブルなシステムを開発する
- 生物分子工学の既存の実験戦略の限界を克服する.
- 細胞機能の急速な進化を可能にします
主な方法:
- 酵母における直交のDNAポリメラーゼ-プラズミドペアのOrthoRepの開発.
- ホストのゲノムより 10万倍も高い
- 連続した遺伝子の進化を 活用する
主要な成果:
- 薬剤耐性マラリアジヒドロフォラート還元酵素 (DHFRs) を 90 個の独立複製で成功的に進化させた.
- 複雑なフィットネス環境と 共通の適応軌跡と エピスタティックな制約を明らかにしました
- 稀な適応的アウトカムと,進化に影響を与える非最適のフィットネスピークを特定した.
結論:
- OrthoRepは,直接的な,スケーラブルな,そして高通量プラットフォームを提供しています.
- 複雑な進化のダイナミクスとフィットネスの調査を可能にします.
- 生物分子と細胞の機能の設計に 新たな道を開きます
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