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Related Concept Videos

CRISPR and crRNAs02:53

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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.
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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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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...
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Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
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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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The Antiviral System of Bacteria and Archaea: CRISPR01:23

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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...
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The Versatile Type V CRISPR Effectors and Their Application Prospects.

Baisong Tong1,2,3, Huina Dong2,3, Yali Cui2,3

  • 1School of Biological Engineering, Dalian Polytechnic University, Dalian, China.

Frontiers in Cell and Developmental Biology
|February 22, 2021
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Summary
This summary is machine-generated.

The review details type V CRISPR-Cas systems, exploring their diverse subtypes and functions. It covers their biotechnological applications and future potential, highlighting their value alongside Cas9 and Cas13 systems.

Keywords:
CRISPR-Cas systemsbase editorgenome editingnucleic acid detection platformstranscriptional regulationtype V effectors

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Area of Science:

  • Molecular Biology
  • Biotechnology
  • Genetics

Background:

  • CRISPR-Cas systems are classified into classes, with Class II systems featuring a single effector protein.
  • Class II encompasses types II (Cas9), V, and VI (Cas13), each with distinct applications in genome and RNA editing.
  • Type V CRISPR-Cas systems represent a diverse family with numerous subtypes and varied functionalities.

Purpose of the Study:

  • To comprehensively review all identified subtypes of the type V CRISPR-Cas family.
  • To elucidate the functional principles of major type V CRISPR-Cas members.
  • To outline the current applications and future prospects of type V systems in biotechnology.

Main Methods:

  • Literature review of identified type V CRISPR-Cas subtypes.
  • Analysis of functional mechanisms based on current research.
  • Assessment of biotechnological applications and development trends.

Main Results:

  • Identification and categorization of various type V CRISPR-Cas subtypes.
  • Detailed explanation of the functional mechanisms of key type V effectors.
  • Summary of current applications in gene editing and RNA manipulation.

Conclusions:

  • Type V CRISPR-Cas systems are a versatile and valuable resource in biotechnology.
  • Understanding their diverse functions is crucial for advancing gene editing and RNA technologies.
  • Further research into type V systems promises expanded applications in synthetic biology and therapeutics.