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Related Concept Videos

Prokaryotic Gene Structure and Organization01:28

Prokaryotic Gene Structure and Organization

Prokaryotic genomes exhibit a streamlined organization of coding and non-coding regions essential for gene expression and protein synthesis. While coding regions contain the genetic instructions for proteins or functional RNAs, non-coding regions regulate the precise transcription and translation of these genes.Coding Regions: Proteins and RNAsThe primary coding regions, known as structural genes, include sequences transcribed into messenger RNA (mRNA) and ultimately translated into...
Global Regulatory Systems01:28

Global Regulatory Systems

Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...
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...
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,...
Prokaryotic Transcriptional Activators and Repressors01:58

Prokaryotic Transcriptional Activators and Repressors

The organization of prokaryotic genes in their genome is notably different from that of eukaryotes. Prokaryotic genes are organized, such that the genes for proteins involved in the same biochemical process or function are located together in groups. This group of genes, along with their regulatory elements, are collectively known as an operon. The functional genes in an operon are transcribed together to give a single strand of mRNA known as polycistronic mRNA.
Transcription of prokaryotic...
Prokaryotic Transcriptional Activators and Repressors01:58

Prokaryotic Transcriptional Activators and Repressors

The organization of prokaryotic genes in their genome is notably different from that of eukaryotes. Prokaryotic genes are organized, such that the genes for proteins involved in the same biochemical process or function are located together in groups. This group of genes, along with their regulatory elements, are collectively known as an operon. The functional genes in an operon are transcribed together to give a single strand of mRNA known as polycistronic mRNA.
Transcription of prokaryotic...

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Related Experiment Video

Updated: May 30, 2026

DNA-affinity-purified Chip (DAP-chip) Method to Determine Gene Targets for Bacterial Two component Regulatory Systems
12:24

DNA-affinity-purified Chip (DAP-chip) Method to Determine Gene Targets for Bacterial Two component Regulatory Systems

Published on: July 21, 2014

Deciphering the regulatory codes in bacterial genomes.

Byung-Kwan Cho1, Bernhard Palsson, Karsten Zengler

  • 1Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, Korea. bcho@kaist.ac.kr

Biotechnology Journal
|August 17, 2011
PubMed
Summary
This summary is machine-generated.

Genome-wide studies reveal complex bacterial gene regulation. Advances in analyzing cis-regulatory elements and trans-acting factors are reshaping our understanding of bacterial transcriptomes and regulomes.

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A Fast and Reliable Pipeline for Bacterial Transcriptome Analysis Case study: Serine-dependent Gene Regulation in Streptococcus pneumoniae
10:18

A Fast and Reliable Pipeline for Bacterial Transcriptome Analysis Case study: Serine-dependent Gene Regulation in Streptococcus pneumoniae

Published on: April 25, 2015

Area of Science:

  • Microbiology
  • Genomics
  • Molecular Biology

Background:

  • Gene transcription relies on interactions between cis-regulatory elements and trans-acting factors.
  • High-throughput technologies like microarrays and sequencing enable genome-wide mapping of trans-acting factor binding sites.
  • This data reveals a greater complexity in bacterial transcriptomes and regulomes than previously understood.

Purpose of the Study:

  • To review current advancements in the genome-scale analysis of interactions between cis-regulatory elements and trans-acting factors in microorganisms.
  • To highlight the impact of new technologies on understanding bacterial gene regulation.
  • To discuss the evolving view of bacterial genome organization, including operon structures.

Main Methods:

  • Genome-wide binding site analysis using high-throughput sequencing technologies.
  • Computational and bioinformatics approaches for analyzing large-scale genomic data.
  • Comparative genomics to study conserved regulatory elements and factors.

Main Results:

  • Identification of numerous genome-wide binding locations for trans-acting factors.
  • Demonstration of the intricate nature of bacterial transcriptomes and regulomes.
  • Evidence suggesting a revision of the traditional operon model in bacterial genomes.

Conclusions:

  • Genome-scale analyses are crucial for understanding complex bacterial gene regulation.
  • The study of cis-regulatory elements and trans-acting factors is rapidly advancing our knowledge of microbial biology.
  • Emerging data challenges and refines existing models of bacterial genome organization.