半合成生物における複製,転写,翻訳の最適化
Aaron W Feldman1, Vivian T Dien1, Rebekah J Karadeema1
1Department of Chemistry , The Scripps Research Institute , 10550 North Torrey Pines Road , La Jolla , California 92037 , United States.
Journal of the American Chemical Society
|June 27, 2019
まとめ
この研究では,半合成生物 (SSO) を非正規のアミノ酸 (ncAAs) で非自然な塩基対 (UBPs) とDNA,RNA,およびトランスレーションでタンパク質を効率的に生成するために最適化しました.
科学分野:
- 合成生物学
- 分子生物学
- 生物化学
背景:
- 半合成生物 (SSO) は,非自然な塩基対 (UBP) を使って,増加した遺伝情報を保存することができます.
- 以前の研究では,非正規のアミノ酸 (ncAAs) を含むタンパク質を生成するUBPsでDNA複製,転写,翻訳を行うことができるSSOを確立しました.
研究 の 目的:
- SSOを体系的に最適化して,情報保存と検索を向上させる.
- DNA複製,転写,翻訳のための最適の非自然なヌクレオチドアナログを特定する.
- タンパク質の効率的な生産を可能にするため,多重,近接的なncAAs.
主な方法:
- 多様なデオキシ・リボヌクレオチド類の探索
- 非天然のリボヌクレオシドトリフォスファートの体内構造活性関係 (SAR) 分析
- 不自然な核酸のDNAとRNAポリメラーゼ認識の評価
- タンパク質合成のための非自然なヌクレオチドのリボソーム媒介ペアリングの評価
主要な成果:
- 複製と転写のための最適なUBPを特定した.
- 転写と翻訳のための最適の非自然なリボヌクレオシドトリフォスファートを決定した.
- 不自然な核酸のポリメラーゼ認識における類似点と相違点
- 不自然なリボヌクレオチドの多様性の効率的かつ選択的なペアリングが翻訳中に実証された.
- 最適化されたSSOで,複数の近接NCAAでタンパク質の効率的な生産を達成しました.
結論:
- 最適化されたSSOは,DNA,RNA,タンパク質の合成を通じて非自然な核酸を効率的に統合します.
- この進歩は,ncAAsで新しいタンパク質を作成するためのSSOの能力を大幅に拡張します.
- この発見は,高度な生物学的応用のためのSSOの設計と設計のための堅固な枠組みを提供します.
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