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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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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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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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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 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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Current and future prospects for CRISPR-based tools in bacteria.

Michelle L Luo1, Ryan T Leenay1, Chase L Beisel2

  • 1Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina, 27695-7905.

Biotechnology and Bioengineering
|October 14, 2015
PubMed
Summary
This summary is machine-generated.

CRISPR-Cas systems are powerful tools for manipulating bacteria. These systems enable advanced genome editing, gene regulation, and targeted antimicrobials, expanding our ability to understand and engineer the bacterial world.

Keywords:
Cas9antimicrobialsgenetic circuitsgenetic controlgenome engineeringundomesticated microbes

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Area of Science:

  • Microbiology
  • Molecular Biology
  • Biotechnology

Background:

  • CRISPR-Cas systems, initially identified as prokaryotic defense mechanisms, have evolved into versatile biotechnological tools.
  • The transition from prokaryotes to powerful biomolecular tools has opened new avenues in biological research and engineering.

Purpose of the Study:

  • To review the translation of CRISPR-Cas systems into technologies for bacterial manipulation.
  • To highlight recent and potential future applications of CRISPR-Cas in bacterial genetics, physiology, and community engineering.

Main Methods:

  • Review of recent literature on CRISPR-Cas applications in bacteria.
  • Analysis of technological advancements stemming from CRISPR-Cas systems.
  • Exploration of future directions based on eukaryotic applications and natural system diversity.

Main Results:

  • CRISPR-Cas technologies facilitate multiplexed genome editing in bacteria.
  • Programmable gene regulation and sequence-specific antimicrobials are key current applications.
  • Future potential includes leveraging eukaryotic advances and diverse CRISPR-Cas systems for DNA acquisition.

Conclusions:

  • CRISPR-Cas systems form an expanding genetic toolbox for bacterial research.
  • These systems hold significant potential for advancing the understanding and engineering of bacterial populations.
  • Continued innovation promises novel applications in synthetic biology and microbial therapeutics.