DNAから作られたDNAを燃料とする分子マシンです
B Yurke1, A J Turberfield, A P Mills
1Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974, USA. yurke@lucent.com
Nature
|August 19, 2000
まとめ
研究者らは,DNAを構造と燃料の両方として利用する新しいDNAマシンを作成しました. このDNAナノメカニカル装置は,ピンチに似ており,燃料糸を加えることで動作し,制御された開閉動作を可能にします.
科学分野:
- ナノテクノロジー ナノテクノロジー
- 分子生物学は分子生物学である.
- マテリアルサイエンス 材料科学
背景:
- DNAの分子認識特性により,ナノスケールの構造が可能になります.
- DNAは粒子を整理し,ナノ結晶の成長をテンプレートし,静的構造を形成するために利用されます.
- 以前の研究で,DNAベースのナモメカニカルスイッチと酵素活性調節が実証されました.
研究 の 目的:
- DNAを構造材料と燃料の両方として利用したDNAマシンを設計する.
- DNAに基づく切り替え可能なナモメカニカル装置を開発する.
- DNA機械の動作サイクルを実証するために.
主な方法:
- 3鎖のDNAナモメカニカルピンチ装置の構築.
- 補助的な"燃料"DNA鎖を用いて,ピンチの形状を制御する.
- DNAのハイブリッド化と融解の原理を用いて,機械を操作する.
主要な成果:
- ピンチの形をしたDNAマシンを成功裏に構築した.
- 燃料DNAを用いたピネッツの可逆的な開閉が実証されました.
- それぞれの運用サイクルでは,デュプレックスDNAの廃棄物製品が生成される.
結論:
- DNAは,ナノマシンの構造的構成要素とエネルギー源の両方として機能することができます.
- 開発されたDNAピンチは,分子ロボティクスにおける潜在的な応用を持つ機能的なナモメカニカル装置を表しています.
- この研究は,活性ナノデバイスの構築におけるDNAの有用性を拡大します.
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The synthesis of the leading and lagging strands is a highly coordinated process. To explain this, the “Trombone model” was proposed by Bruce Alberts in 1980. The DNA loop formation starts when a primer is synthesized on the parent lagging strand. The loop grows with the...
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