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Related Concept Videos

Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

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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...
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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...
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Cis-regulatory Sequences02:02

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Cis-regulatory sequences are short fragments of non-coding DNA that are present on the same chromosomes as the genes that they regulate. These fragments serve as binding sites for transcriptional regulators, proteins that are responsible for controlling gene transcription and differential gene expression across cell types in eukaryotes. Cis-regulatory sequences can be close to the gene of interest or thousands of bases away in the DNA sequence; however, those sequences that are further away are...
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Constitutive and Regulated Gene Expression01:27

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Gene expression in prokaryotes is governed by constitutive and regulated systems, allowing cells to balance the production of essential proteins with adaptive responses to environmental changes.Constitutive Gene ExpressionConstitutive, or housekeeping, genes are continuously expressed as they encode proteins vital for fundamental cellular processes. These include enzymes for glycolysis, ribosomal components for protein synthesis, and proteins involved in DNA replication. Their constant...
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Related Experiment Video

Updated: Jan 5, 2026

Epigenetic Regulation of Cardiac Differentiation of Embryonic Stem Cells and Tissues
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Gene Regulation Knows Its Boundaries.

Elzo de Wit1

  • 1Division of Gene Regulation, Oncode Institute and Netherlands Cancer Institute, Amsterdam, the Netherlands.

Trends in Genetics : TIG
|October 19, 2019
PubMed
Summary
This summary is machine-generated.

The genome

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Area of Science:

  • Genomics and molecular biology.
  • Cellular biology and gene regulation.

Background:

  • The three-dimensional genome folding within the cell nucleus is nonrandom.
  • Understanding the functional implications of genome organization is crucial for gene regulation studies.

Purpose of the Study:

  • To investigate how the spatial arrangement of genes and regulatory elements influences gene expression during development.
  • To elucidate the role of genome architecture in developmental gene regulation.

Main Methods:

  • Utilizing advanced imaging techniques to visualize genome organization.
  • Employing genetic and molecular assays to assess gene expression patterns in relation to spatial positioning.

Main Results:

  • Demonstrated that spatial segregation of genes and regulatory regions significantly impacts developmental gene expression.
  • Identified specific patterns of genome folding associated with precise control of developmental gene activation and silencing.

Conclusions:

  • Spatial organization of the genome plays a critical, albeit subtle, role in fine-tuning developmental gene expression.
  • Genome folding is a key regulatory mechanism that contributes to the fidelity of developmental processes.