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関連する概念動画

Conjugated Proteins02:50

Conjugated Proteins

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Simple proteins and protein complexes contain only amino acids. In contrast, many other proteins, called conjugated proteins, covalently bond with non-protein moieties.
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
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Plastic Deformations of Members with a Single Plane of Symmetry01:21

Plastic Deformations of Members with a Single Plane of Symmetry

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When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...
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DNA Helicases00:55

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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...
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Plasticity is the property where an object loses its elasticity and undergoes irreversible deformation, even after the deformation forces are eliminated. If a material deforms irreversibly without increasing stress or load, then this is called ideal plasticity. For example, when a force is applied to an aluminum rod, it changes its shape, but it does not return to its original shape once the force is removed. Plastic deformation or ductility is thus a permanent deformation or change in the...
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Plasticizers01:31

Plasticizers

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Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
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Updated: Jan 30, 2026

Single-Molecule Fluorescence Visualization of DNA Polymerase Dynamics at G-Quadruplexes
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機能化プラスチック表面上でのDNA共役による逐次的、反復的な単一分子シーケンシング

Sharmili Roy1, Hanlee P Ji2, Billy T Lau3

  • 1Division of Oncology, Department of Medicine, Stanford University School of Medicine, CCSR 1115, 269 Campus Drive, Stanford, CA, 94305-5151, USA.

Scientific reports
|January 28, 2026
PubMed
まとめ
この要約は機械生成です。

研究者らは、クリックケミストリーを使用してDNAをプラスチック表面に付着させる新しいDNAストレージ法を開発しました。これにより、破壊なしで繰り返しシーケンシングが可能になり、RPAはPCRよりも優れた性能を示しました。

キーワード:
DNAストレージクリックケミストリープラスチック表面逐次シーケンシングRPA非破壊増幅

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関連する実験動画

Last Updated: Jan 30, 2026

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科学分野:

  • バイオテクノロジー
  • 材料科学
  • 分子生物学

背景:

  • DNAは高密度データストレージの可能性を提供する。
  • 現在のDNA検索方法は破壊的または非効率的である可能性がある。
  • 安定した再利用可能なDNAデータストレージシステムの必要性。

研究 の 目的:

  • 任意のDNA要素の繰り返しおよび逐次検索のための方法を開発すること。
  • 堅牢なプラスチックベースのDNAストレージ媒体を作成すること。
  • DNA検索のためのPCRおよび組換え酵素ポリメラーゼ増幅（RPA）を比較すること。

主な方法:

  • クリックケミストリーを使用して、トランス-シクロオクテン（TCO）で末端処理された合成DNAをメチルテトラジン（MTz）官能化プラスチック表面に共役させる。
  • DNA検索のためのポリメラーゼベースの増幅（PCRおよびRPA）を利用する。
  • DNA共役プロセス、速度論を特徴づけ、複数の検索サイクルにわたる増幅とシーケンシングを実行する。

主要な成果:

  • 共有結合によるプラスチック表面へのDNA付着を実証し、繰り返し、非破壊的な増幅を可能にした。
  • 同じ表面から複数のDNAデータ要素を繰り返し検索し、シーケンシングすることに成功した。
  • PCRと比較して、汚染の減少や収率の改善を含む、より優れた性能指標を示したRPA。

結論:

  • 堅牢で反復的かつ標的化されたDNA検索のためのプラスチックベースのDNAストレージシステムを開発した。
  • クリックケミストリーアプローチにより、安定した長期的なDNAデータストレージが可能になる。
  • RPAは、このストレージシステムからの逐次DNAデータ検索により適した増幅方法である。