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関連する概念動画

CRISPR01:59

CRISPR

Genome editing technologies allow scientists to modify an organism’s DNA via the addition, removal, or rearrangement of genetic material at specific genomic locations. These types of techniques could potentially be used to cure genetic disorders such as hemophilia and sickle cell anemia. One popular and widely used DNA-editing research tool that could lead to safe and effective cures for genetic disorders is the CRISPR-Cas9 system. CRISPR-Cas9 stands for Clustered Regularly Interspaced Short...
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...
CRISPR and crRNAs02:53

CRISPR and crRNAs

Bacteria and archaea are susceptible to viral infections just like eukaryotes; therefore, they have developed a unique adaptive immune system to protect themselves. Clustered regularly interspaced short palindromic repeats and CRISPR-associated proteins (CRISPR-Cas) are present in more than 45% of known bacteria and 90% of known archaea.
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
CRISPR01:59

CRISPR

Genome editing technologies allow scientists to modify an organism’s DNA via the addition, removal, or rearrangement of genetic material at specific genomic locations. These types of techniques could potentially be used to cure genetic disorders such as hemophilia and sickle cell anemia. One popular and widely used DNA-editing research tool that could lead to safe and effective cures for genetic disorders is the CRISPR-Cas9 system. CRISPR-Cas9 stands for Clustered Regularly Interspaced Short...
The Antiviral System of Bacteria and Archaea: CRISPR01:23

The Antiviral System of Bacteria and Archaea: CRISPR

CRISPR stands for Clustered Regularly Interspaced Short Palindromic Repeats is a adaptive immune system found in bacteria and archaea that protects against viral infections. This system enables prokaryotic cells to identify, remember, and neutralize foreign genetic elements, primarily bacteriophages, by storing fragments of the invader’s DNA as a genetic memory.The CRISPR immune response begins during an initial infection. Cas (CRISPR-associated) proteins play a central role in this defense.
CRISPR/Cas9 Genome Editing01:28

CRISPR/Cas9 Genome Editing

The CRISPR-Cas system serves as a bacterial defense mechanism against invading genetic elements such as viruses and plasmids, forming the foundation for its adaptation as a powerful genome-editing tool. Originally discovered in prokaryotes, this system has been repurposed to revolutionize genetic engineering across a wide range of organisms, including plants, animals, and humans. The core component, Cas9, is an endonuclease derived from Streptococcus pyogenes, capable of introducing...

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関連する実験動画

Updated: May 11, 2026

Enhanced Genome Editing with Cas9 Ribonucleoprotein in Diverse Cells and Organisms
09:51

Enhanced Genome Editing with Cas9 Ribonucleoprotein in Diverse Cells and Organisms

Published on: May 25, 2018

CRISPR-Cas:変化に適応する

Simon A Jackson1, Rebecca E McKenzie2, Robert D Fagerlund1

  • 1Department of Microbiology and Immunology, University of Otago, Post Office Box 56, Dunedin 9054, New Zealand.

Science (New York, N.Y.)
|April 8, 2017
PubMed
まとめ

CRISPR-Casシステムは,プロカリオットにウイルスに対する適応免疫を与えます. 最近の進歩により Cas1-Cas2タンパク質の仕組みが CRISPRの適応を促し 新しい脅威を認識するために 遺伝的記憶を更新していることが明らかになりました

さらに関連する動画

A New Toolkit for Evaluating Gene Functions using Conditional Cas9 Stabilization
08:20

A New Toolkit for Evaluating Gene Functions using Conditional Cas9 Stabilization

Published on: September 2, 2021

Generation of Centromere-Associated Protein-E CENP-E-/- Knockout Cell Lines using the CRISPR/Cas9 System
11:49

Generation of Centromere-Associated Protein-E CENP-E-/- Knockout Cell Lines using the CRISPR/Cas9 System

Published on: June 23, 2023

関連する実験動画

Last Updated: May 11, 2026

Enhanced Genome Editing with Cas9 Ribonucleoprotein in Diverse Cells and Organisms
09:51

Enhanced Genome Editing with Cas9 Ribonucleoprotein in Diverse Cells and Organisms

Published on: May 25, 2018

A New Toolkit for Evaluating Gene Functions using Conditional Cas9 Stabilization
08:20

A New Toolkit for Evaluating Gene Functions using Conditional Cas9 Stabilization

Published on: September 2, 2021

Generation of Centromere-Associated Protein-E CENP-E-/- Knockout Cell Lines using the CRISPR/Cas9 System
11:49

Generation of Centromere-Associated Protein-E CENP-E-/- Knockout Cell Lines using the CRISPR/Cas9 System

Published on: June 23, 2023

科学分野:

  • 微生物学
  • 分子生物学
  • 免疫学

背景:

  • プロカリオットはウイルスや 移動性遺伝子の脅威に 常に直面しています
  • CRISPR-Casシステムは 核生物の適応性免疫システムです
  • これらのシステムは,外来DNA/RNAの認識と中和のために遺伝子メモリを使用します.

研究 の 目的:

  • CRISPRの適応メカニズムの理解における最近の進歩をレビューする.
  • CRISPR免疫における Cas1-Cas2タンパク質機構の役割を強調する.

主な方法:

  • CRISPR-Casシステムに関する現在の科学文献のレビュー
  • CRISPRの適応を制御する分子機構の分析
  • 保存されたCas1-Cas2タンパク質複合体に焦点を当てます.

主要な成果:

  • CRISPRの適応は 進化する脅威に対する 遺伝的記憶の更新に不可欠です
  • Cas1-Cas2タンパク質複合体は,様々なCRISPR-Casシステムにおいて保存され,基本的な構成要素である.
  • このメカニズムは,プロカリオットの適応性免疫反応の 中心にある.

結論:

  • Cas1-Cas2機構は,CRISPR-Casの適応免疫の動的更新に不可欠です.
  • これらのメカニズムを理解することで 生命体の防御戦略の知識が向上します
  • このレビューは,Cas1-Cas2複合体を強調して,CRISPR適応に関する現在の知識を統合しています.