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関連する概念動画

The Replisome03:01

The Replisome

DNA replication is carried out by a large complex of proteins that act in a coordinated matter to achieve high-fidelity DNA replication. Together this complex is known as the DNA replication machinery or the replisome.
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...
The Replisome03:01

The Replisome

DNA replication is carried out by a large complex of proteins that act in a coordinated matter to achieve high-fidelity DNA replication. Together this complex is known as the DNA replication machinery or the replisome.
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...
The DNA Replication Fork01:02

The 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...
The DNA Replication Fork01:02

The 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...
DNA Replication02:40

DNA Replication

DNA replication involves the separation of the two strands of the double helix, with each strand serving as a template from which the new complementary strand is copied.  After replication, each double-stranded DNA includes one parental or “old” strand and one “new” strand. This is known as semiconservative replication. The resulting DNA molecules have the same sequence and are divided equally into the two daughter cells.
Replication in Prokaryotes
DNA replication uses a large number of...
Homologous Recombination02:31

Homologous Recombination

The basic reaction of homologous recombination (HR) involves two chromatids that contain DNA sequences sharing a significant stretch of identity. One of these sequences uses a strand from another as a template to synthesize DNA in an enzyme-catalyzed reaction. The final product is a novel amalgamation of the two substrates. To ensure an accurate recombination of sequences, HR is restricted to the S and G2 phases of the cell cycle. At these stages, the DNA has been replicated already and the...

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関連する実験動画

Updated: Jul 10, 2026

Design and Synthesis of a Reconfigurable DNA Accordion Rack
07:44

Design and Synthesis of a Reconfigurable DNA Accordion Rack

Published on: August 15, 2018

複雑なマルチクロスオーバーDNAナノ構造のローリングサークル酵素複製.

Chenxiang Lin1, Xing Wang, Yan Liu

  • 1Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287, USA.

Journal of the American Chemical Society
|October 30, 2007
PubMed
まとめ

複雑な人工DNAナノオブジェクト,特にパラネミッククロスオーバーDNAは,Rolling Circle Amplification (RCA) を使用して複製することができます. この方法は,複雑なDNA構造を高精度で複製するための信頼できる方法を提供します.

科学分野:

  • 分子生物学は分子生物学である.
  • ナノテクノロジー ナノテクノロジー
  • バイオケミストリー バイオケミストリー

背景:

  • 自然はDNAを遺伝情報の伝達体として利用し,複製は複雑な細胞機構によって制御されます.
  • 単純なDNAのダブルヘリクスの複製はよく理解されています.
  • 複雑な人工DNA構造を複製する可能性は,まだ未解決の問題である.

研究 の 目的:

  • 複雑な人工DNAナノオブジェクトが確立された生物学的方法を使用して複製できるかどうかを調査する.
  • パラネミッククロスオーバーDNA,複合的なマルチクロスオーバーDNA分子の成功複製を実証する.
  • 人工DNA構造の複製プロセスの信頼性と効率を評価する.

主な方法:

  • ローリングサークル増幅 (RCA) を使用して,パラネミッククロスオーバーDNAを複製しました.
  • ネイティブポリアクリラミドゲル電泳 (PAGE) が分析に使用されました.
  • 構造的整合性を評価するために,熱移行研究とファーガソン分析が行われました.
  • ハイドロキシルラジカル・オートフットプリントは,複製されたDNAの構造的詳細を検証しました.

主要な成果:

  • パラネミッククロスオーバーDNAは,ローリングサークル増幅を用いて成功裏に複製されました.

さらに関連する動画

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules
09:32

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules

Published on: April 12, 2019

Folding and Characterization of a Bio-responsive Robot from DNA Origami
07:59

Folding and Characterization of a Bio-responsive Robot from DNA Origami

Published on: December 3, 2015

関連する実験動画

Last Updated: Jul 10, 2026

Design and Synthesis of a Reconfigurable DNA Accordion Rack
07:44

Design and Synthesis of a Reconfigurable DNA Accordion Rack

Published on: August 15, 2018

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules
09:32

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules

Published on: April 12, 2019

Folding and Characterization of a Bio-responsive Robot from DNA Origami
07:59

Folding and Characterization of a Bio-responsive Robot from DNA Origami

Published on: December 3, 2015

  • 増幅プロセスは,適度な効率と高精度を示した.
  • 構造分析は複製された複雑なDNA構造の完全性を確認した.
  • DNAポリメラーゼは,単一鎖のパラネミッククロスオーバーDNA分子を複製することが示されました.

    • 結論:

    • ローリングサークル増幅 (RCA) は,複雑なDNA構造を複製するための実行可能で信頼できる方法です.
    • この発見は,人工DNAナノオブジェクトを作成および操作するためのナノテクノロジーにおける潜在的な応用があります.
    • この研究は,自然生物学的システムにおける複雑なDNA構造の潜在的存在を理解するための意味を示唆しています.