関連する実験動画
Updated: Jun 22, 2026
07:59
Folding and Characterization of a Bio-responsive Robot from DNA Origami
Published on: December 3, 2015
折りたたみDNAオリガミは,足場の二重鎖の源から折りたたみDNAオリガミ
Björn Högberg1, Tim Liedl, William M Shih
1Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, USA. Bjorn_Hogberg@dfci.harvard.edu
Journal of the American Chemical Society
|July 2, 2009
まとめ
研究者は,2つの異なるDNA-オリガミ構造の自己組み立てを達成しました. これは,熱と化学を組み合わせて,DNA・スキャフォルドをステープル・ストランドでデナチュレーションし,その後に急速な冷却と透析を行いました.
科学分野:
- バイオケミストリー バイオケミストリー
- マテリアルサイエンス 材料科学
- ナノテクノロジー ナノテクノロジー
背景:
- DNAオリガミは,DNA鎖の正確な配置をカスタム形に可能にするナノテクノロジーです.
- 自己組み立てプロセスは,複雑なナノスケール構造の作成に不可欠です.
研究 の 目的:
- DNA オリガミ構造を自己組み立てするための新しい方法を調査する.
- 制御されたデナチュレーションとレナチュレーションにより,異なる構造を生成する可能性を決定する.
主な方法:
- ステープルストランドの存在下での二重鎖のDNAスキャフォールドストランドの組み合わせた熱と化学的変性.
- 構造的形成を誘発する急速な温度低下.
- 化学デナチュラントを除去し,自己組み立てを容易にするために段階的な透析.
主要な成果:
- 2つの異なるDNA-オリガミ構造の自己組み立てが成功していることが観察されました.
- このプロセスは,複雑なナノスケールアーキテクチャの制御された形成を実証しました.
結論:
- 記述された方法は,DNA オリガミのプログラム可能な自己組み立てのための効果的な経路を提供します.
- この技術は,さまざまなアプリケーションのための新しいナノ構造を作成する可能性を秘めています.
関連する概念動画
01:02The DNA Replication Fork
An organism’s genome needs to be duplicated in an efficient and error-free manner for its growth and survival. The replication fork is a Y-shaped active region where two strands of DNA are separated and replicated continuously. The coupling of DNA unzipping and complementary strand synthesis is a characteristic feature of a replication fork. Organisms with small circular DNA, such as E. coli, often have a single origin of replication; therefore, they have only two replication forks, one in...
01:02The DNA Replication Fork
An organism’s genome needs to be duplicated in an efficient and error-free manner for its growth and survival. The replication fork is a Y-shaped active region where two strands of DNA are separated and replicated continuously. The coupling of DNA unzipping and complementary strand synthesis is a characteristic feature of a replication fork. Organisms with small circular DNA, such as E. coli, often have a single origin of replication; therefore, they have only two replication forks, one in...
01:03Single-Strand DNA Binding Proteins
For successful DNA replication, the unwinding of double-stranded DNA must be accompanied by stabilization and protection of the separated single strands of the DNA. This crucial task is performed by single-strand DNA-binding (SSB) proteins. They bind to the DNA in a sequence-independent manner, which means that the nitrogenous bases of the DNA need not be present in a specific order for binding of SSB proteins to it. The binding of SSB proteins straightens single-stranded DNA (ssDNA) and makes...
02:05DNA as a Genetic Template
Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
02:05DNA as a Genetic Template
Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
00:55DNA Helicases
DNA unwinding helicase enzymes are a type of motor protein. Motor proteins can translocate along filaments or polymers using energy generated from ATP hydrolysis. Helicases are involved in all the important cellular processes where DNA unwinding is required, such as DNA replication, repair, recombination, and transcription. They are present in all living organisms, but vary in their structure, function, and mechanism of action. For example, in prokaryotes, DnaB helicase binds and translocates...