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Related Concept Videos

Operon Model01:23

Operon Model

The operon model represents a fundamental mechanism of gene regulation in prokaryotes, enabling coordinated expression of genes involved in related metabolic or functional pathways. Operons consist of structural genes, a promoter, and an operator, with transcription regulated by repressors, activators, and small effector molecules.Structure and Function of OperonsAn operon is a cluster of structural genes transcribed together under the control of a single promoter. The promoter region...
Operons02:09

Operons

Prokaryotes can control gene expression through operons—DNA sequences consisting of regulatory elements and clustered, functionally related protein-coding genes. Operons use a single promoter sequence to initiate transcription of a gene cluster (i.e., a group of structural genes) into a single mRNA molecule. The terminator sequence ends transcription. An operator sequence, located between the promoter and structural genes, prohibits the operon’s transcriptional activity if bound by a repressor...
Operons02:09

Operons

Prokaryotes can control gene expression through operons—DNA sequences consisting of regulatory elements and clustered, functionally related protein-coding genes. Operons use a single promoter sequence to initiate transcription of a gene cluster (i.e., a group of structural genes) into a single mRNA molecule. The terminator sequence ends transcription. An operator sequence, located between the promoter and structural genes, prohibits the operon’s transcriptional activity if bound by a repressor...
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...
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...

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Related Experiment Video

Updated: May 20, 2026

Standardized Modular Assembly of Polycistronic Operons with Modular Cloning (MoClo) using the In-Cloning toolkit
06:28

Standardized Modular Assembly of Polycistronic Operons with Modular Cloning (MoClo) using the In-Cloning toolkit

Published on: September 2, 2025

Features for computational operon prediction in prokaryotes.

Li-Yeh Chuang1, Hsueh-Wei Chang, Jui-Hung Tsai

  • 1Department of Chemical Engineering & Institute of Biotechnology and Chemical Engineering, I-Shou University, Taiwan.

Briefings in Functional Genomics
|July 4, 2012
PubMed
Summary
This summary is machine-generated.

Accurate operon prediction in prokaryotes can be improved by exploring new features or using receiver operating characteristic analysis for feature selection. This enhances gene function annotation and application.

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Last Updated: May 20, 2026

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Using SCOPE to Identify Potential Regulatory Motifs in Coregulated Genes
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Using SCOPE to Identify Potential Regulatory Motifs in Coregulated Genes

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Area of Science:

  • Genomics
  • Bioinformatics
  • Computational Biology

Background:

  • Operons are crucial for gene regulation and function in prokaryotes.
  • Accurate operon prediction aids in understanding prokaryotic gene organization and biological processes.
  • Current prediction methods utilize various genomic and functional features.

Purpose of the Study:

  • To review and compare features used in recent prokaryotic operon prediction methods.
  • To identify areas for improvement in operon prediction accuracy.

Main Methods:

  • Literature review of operon prediction studies.
  • Analysis of features including intergenic distance, metabolic pathways, gene homology, regulatory elements, gene order, and expression data.
  • Comparison of prediction performance based on different features.

Main Results:

  • Various features like intergenic distance, metabolic pathways, and gene order conservation show utility in operon prediction.
  • Microarray data and STRING database scores also contribute to prediction accuracy.
  • No single feature guarantees optimal prediction; a combination or novel features may be necessary.

Conclusions:

  • Further improvements in prokaryotic operon prediction can be achieved through the discovery of novel features.
  • Employing feature selection techniques, such as receiver operating characteristic analysis, prior to algorithmic processing is recommended.
  • Enhanced operon prediction will facilitate better functional annotation and application of prokaryotic genes.