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Related Concept Videos

Riboswitches01:56

Riboswitches

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Riboswitches are non-coding mRNA domains that regulate the transcription and translation of downstream genes without the help of proteins. Riboswitches bind directly to a metabolite and can form unique stem-loop or hairpin structures in response to the amount of the metabolite present. They have two distinct regions – a metabolite-binding aptamer and an expression platform.
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
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Transcriptional Regulation: Riboswitches01:23

Transcriptional Regulation: Riboswitches

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Riboswitches are RNA elements that regulate gene expression by altering their secondary structures in response to specific effector molecules. These elements, located in the leader regions of certain mRNAs, act as transcriptional regulators by toggling between alternative conformations to control downstream gene expression. Riboswitch-mediated regulation is a precise mechanism for modulating biosynthetic pathways, as exemplified by the riboflavin biosynthesis pathway in Bacillus...
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Biosynthesis in Bacteria01:24

Biosynthesis in Bacteria

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Biosynthesis in bacteria is a fundamental anabolic process that generates essential macromolecules, including proteins, nucleic acids, lipids, and polysaccharides. These macromolecules are critical for cellular growth, replication, and function. The process is tightly regulated and energetically linked to catabolic pathways to ensure optimal resource utilization.Biosynthetic pathways begin with precursor metabolites such as pyruvate, acetyl-CoA, and glucose-6-phosphate derived from glycolysis,...
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Types of RNA01:23

Types of RNA

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Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
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Gene Regulation in Microbial Communities: Quorum Sensing01:28

Gene Regulation in Microbial Communities: Quorum Sensing

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Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
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Bacterial Translocation and Protein Secretion01:26

Bacterial Translocation and Protein Secretion

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Bacterial protein secretion involves translocation systems to ensure proteins reach their designated locations, including the plasma membrane, periplasm, outer membrane, or the external environment. These translocation systems are vital for bacterial physiology, supporting processes like membrane assembly, enzymatic activity in the periplasm, and interactions with the external environment. The division of labor between Sec and Tat pathways ensures efficiency in handling proteins with diverse...
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Transposon-insertion Sequencing as a Tool to Elucidate Bacterial Colonization Factors in a Burkholderia gladioli Symbiont of Lagria villosa Beetles
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The current riboswitch landscape in Clostridioides difficile.

Adriana Badilla Lobo1, Olga Soutourina1, Johann Peltier1

  • 1Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette, France.

Microbiology (Reading, England)
|October 15, 2024
PubMed
Summary
This summary is machine-generated.

Riboswitches regulate gene expression in bacteria like Clostridioides difficile. Targeting these RNA elements offers a promising strategy for developing new antimicrobial treatments against C. difficile infections.

Keywords:
C. difficilepathogenriboswitchtherapeutics

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Area of Science:

  • Molecular Biology
  • Microbiology
  • RNA Biology

Background:

  • Riboswitches are RNA regulatory elements controlling gene expression via ligand binding.
  • They are crucial for bacterial survival and virulence, making them attractive antimicrobial targets.
  • Clostridioides difficile harbors numerous riboswitches essential for its adaptability and pathogenicity.

Purpose of the Study:

  • To review riboswitch-mediated gene regulation in Clostridioides difficile.
  • To highlight the importance of riboswitches in C. difficile adaptability and pathogenicity.
  • To discuss riboswitch-targeting compounds as potential treatments for C. difficile infections.

Main Methods:

  • Literature review of riboswitch-mediated regulation in C. difficile.
  • Analysis of ligand specificity and function of known C. difficile riboswitches.
  • Examination of recent progress in developing riboswitch-targeting compounds.

Main Results:

  • Riboswitches play a significant role in C. difficile adaptability and pathogenicity.
  • Specific ligand-binding and functional mechanisms of C. difficile riboswitches are elucidated.
  • Progress in developing riboswitch-targeting compounds for C. difficile infections is demonstrated.

Conclusions:

  • Riboswitches are vital for C. difficile survival and virulence.
  • Understanding riboswitch mechanisms provides therapeutic insights.
  • Further research into riboswitch structure and function is needed for novel antimicrobial strategies.