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Related Concept Videos

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...
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...
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...
Master Transcription Regulators02:23

Master Transcription Regulators

Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
Master Transcription Regulators02:23

Master Transcription Regulators

Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
Constitutive and Regulated Gene Expression01:27

Constitutive and Regulated Gene Expression

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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Updated: Jun 22, 2026

Prediction and Validation of Gene Regulatory Elements Activated During Retinoic Acid Induced Embryonic Stem Cell Differentiation
09:07

Prediction and Validation of Gene Regulatory Elements Activated During Retinoic Acid Induced Embryonic Stem Cell Differentiation

Published on: June 21, 2016

Building developmental gene regulatory networks.

Enhu Li1, Eric H Davidson

  • 1Division of Biology, California Institute of Technology, Pasadena, California 911025, USA.

Birth Defects Research. Part C, Embryo Today : Reviews
|June 17, 2009
PubMed
Summary
This summary is machine-generated.

Understanding animal development requires mapping gene regulatory networks (GRNs). This study details methods to identify gene interactions and construct GRNs for developmental insights.

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Last Updated: Jun 22, 2026

Prediction and Validation of Gene Regulatory Elements Activated During Retinoic Acid Induced Embryonic Stem Cell Differentiation
09:07

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Published on: June 21, 2016

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11:23

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Published on: October 6, 2019

Area of Science:

  • Developmental Biology
  • Genomics
  • Systems Biology

Background:

  • Animal development relies on complex genomic regulatory instructions.
  • Gene regulatory networks (GRNs) govern cell specification and patterning.
  • Understanding GRNs is crucial for mechanistic insights into development.

Purpose of the Study:

  • To outline the process of constructing gene regulatory networks (GRNs).
  • To highlight methods for identifying gene interactions and network structures.
  • To emphasize the importance of GRNs in understanding developmental processes.

Main Methods:

  • Identifying regulatory genes and their spatiotemporal expression patterns.
  • Utilizing large-scale perturbation analysis to investigate gene interactions (activation/repression).
  • Integrating expression changes to infer direct GRN linkages and structure.
  • Verifying predicted GRN linkages through cis-regulatory analysis.

Main Results:

  • Demonstrated the construction of GRNs by analyzing gene interactions and expression data.
  • Showcased the explanatory power of GRNs using sea urchin endomesoderm lineage specification as a model.
  • Established a framework for systematically acquiring and understanding developmental GRNs.

Conclusions:

  • Gene regulatory networks are essential for a mechanistic understanding of animal development.
  • The integration of perturbation analysis and cis-regulatory analysis enables GRN construction.
  • GRN mapping provides a powerful approach to deciphering developmental processes.