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Related Concept Videos

Translational Regulation01:29

Translational Regulation

Translational regulation in prokaryotes ensures efficient protein synthesis by controlling ribosome access to mRNA. This regulation is mediated by secondary RNA structures, including translational riboswitches, RNA thermometers, and small RNAs (sRNAs), which respond to intracellular and environmental signals to modulate gene expression.Translational RiboswitchesRiboswitches in the leader region of mRNAs can regulate translation by altering the accessibility of the Shine-Dalgarno (SD) sequence,...
Types of RNA01:23

Types of RNA

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...
Types of RNA01:20

Types of RNA

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 regulating 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 Performs Diverse...
Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the addition of a...
Regulation of Expression Occurs at Multiple Steps02:24

Regulation of Expression Occurs at Multiple Steps

Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
Coordination of Gene Expression Processes in Bacteria01:29

Coordination of Gene Expression Processes in Bacteria

The DNA replication, transcription, and translation processes are intricately coupled in bacteria, allowing efficient gene expression and rapid protein synthesis. While this physical and functional coordination is advantageous, it introduces challenges that bacteria overcome through specific regulatory mechanisms.Coupling of Replication, Transcription, and TranslationThe coupling of replication, transcription, and translation is a hallmark of bacterial gene expression. As the replisome unwinds...

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Phage-mediated Delivery of Targeted sRNA Constructs to Knock Down Gene Expression in E. coli
08:25

Phage-mediated Delivery of Targeted sRNA Constructs to Knock Down Gene Expression in E. coli

Published on: March 20, 2016

Gene expression control by selective RNA processing and stabilization in bacteria.

Tatiana Rochat1, Philippe Bouloc, Francis Repoila

  • 1INRA, UR892, Virologie et Immunologie Moléculaires, Jouy-en-Josas, France.

FEMS Microbiology Letters
|April 27, 2013
PubMed
Summary
This summary is machine-generated.

Bacterial RNA maturation transforms unstable RNA into functional molecules, regulating gene expression post-transcriptionally. This process is crucial for adapting to environmental changes by controlling protein and RNA levels.

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Area of Science:

  • Molecular Biology
  • Post-transcriptional Regulation
  • Bacterial Genetics

Background:

  • RNA maturation is a critical post-transcriptional regulatory mechanism in bacteria.
  • It controls the abundance of proteins and functional RNAs.
  • This process enables bacteria to adapt to environmental fluctuations.

Purpose of the Study:

  • To elucidate the role of RNA maturation in bacterial gene regulation.
  • To understand how labile RNAs are converted into stable, functional molecules.

Main Methods:

  • Analysis of RNA processing pathways.
  • Enzymatic assays for RNA modification.
  • Genetic manipulation of bacterial strains.

Main Results:

  • Identified key enzymes and factors involved in bacterial RNA maturation.
  • Demonstrated the conversion of precursor RNAs into mature, functional forms.
  • Showcased the role of RNA maturation in environmental adaptation.

Conclusions:

  • RNA maturation is essential for bacterial survival and adaptation.
  • This process provides a stable output of functional RNAs and proteins.
  • Enzymes and factors previously associated with degradation are repurposed for maturation.