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Regulation of Expression at Multiple Steps

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...

What is Gene Expression?

What is Gene Expression?

Overview
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...

What is Gene Expression?

What is Gene Expression?

Overview
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...

What is Gene Expression?

What is Gene Expression?

A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is comprised of nucleotides and proteins are comprised of amino acids, a mediator is required to convert the information encoded in DNA into proteins. This mediator is the messenger RNA (mRNA). mRNA copies the blueprint from DNA by a process called transcription. In eukaryotes, transcription occurs in the nucleus by complementary base-pairing with the DNA template. The mRNA is then processed and...

Regulation of Expression Occurs at Multiple Steps

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...

Regulation of Expression Occurs at Multiple Steps

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...

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Related Experiment Video

Updated: May 13, 2026

Temporal Ordering of Dynamic Expression Data from Detailed Spatial Expression Maps

Temporal Ordering of Dynamic Expression Data from Detailed Spatial Expression Maps

Published on: February 9, 2017

Modeling gene expression in time and space.

Pau Rué¹, Jordi Garcia-Ojalvo

¹Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona Biomedical Research Park, 08003 Barcelona, Spain. pau.rue@upf.edu

Annual Review of Biophysics

|March 27, 2013

Summary

This summary is machine-generated.

Cell populations display dynamic gene expression over time and space. Mathematical modeling of these spatiotemporal patterns helps reveal underlying molecular mechanisms crucial for cellular function and survival.

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Temporal Ordering of Dynamic Expression Data from Detailed Spatial Expression Maps

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Area of Science:

Molecular Biology
Systems Biology
Computational Biology

Background:

Cell populations exhibit dynamic, non-homogeneous gene expression in both temporal and spatial domains.
Temporal dynamics include oscillations and pulses, vital for circadian rhythms, cell cycle, and stress responses.
Spatial heterogeneities are critical for multicellular decision-making and development.

Purpose of the Study:

To review recent examples of temporal dynamics and spatial patterning in gene expression.
To demonstrate how modeling these phenomena can elucidate molecular mechanisms.
To highlight the importance of spatiotemporal gene expression for cellular function.

Main Methods:

Review of existing literature on gene expression dynamics.
Theoretical analysis of mathematical models of gene and protein circuits.
Focus on spatiotemporal characteristics of gene expression.

Main Results:

Spatiotemporal gene expression provides strong constraints for theoretical modeling.
Modeling can help unravel complex molecular mechanisms driving cellular behaviors.
Dynamic gene expression is fundamental to diverse cellular processes.

Conclusions:

Understanding the spatiotemporal dynamics of gene expression is key to deciphering cellular function.
Mathematical modeling is a powerful tool for investigating these complex biological systems.
Coordination of temporal and spatial gene expression is essential for cell survival.