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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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Regulation of Expression Occurs at Multiple Steps02:24

Regulation of Expression Occurs at Multiple Steps

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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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Epigenetic Regulation01:46

Epigenetic Regulation

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Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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Transcription01:17

Transcription

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Transcription is the synthesis of RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in correctly synthesizing messenger RNA (mRNA). Transcriptional regulation is responsible for the differentiation of different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds of RNA Molecules
In eukaryotes,...
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What is Gene Expression?01:42

What is Gene Expression?

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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...
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Master Transcription Regulators02:23

Master Transcription Regulators

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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...
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Updated: Aug 10, 2025

Epigenetic Regulation of Cardiac Differentiation of Embryonic Stem Cells and Tissues
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Singling out how genes are regulated during development.

Shawn M Burgess1

  • 1Translational and Functional Genomics Branch, National Human Genome Research Institute (NHGRI), National Institutes of Health (NIH), Bethesda, MD, USA.

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|February 13, 2023
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Summary
This summary is machine-generated.

This study maps gene regulation in zebrafish embryos at single-cell resolution. These findings offer insights into early vertebrate development using advanced genomics techniques.

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Area of Science:

  • Developmental Biology
  • Genomics
  • Epigenetics

Background:

  • Early vertebrate development involves complex gene regulation.
  • Understanding gene expression dynamics is crucial for developmental biology.

Discussion:

  • Single-cell genomics offers unprecedented resolution for studying gene regulation.
  • Chromatin accessibility provides insights into regulatory element activity.

Key Insights:

  • The study provides a single-cell resolution map of chromatin accessibility and gene regulation in zebrafish embryos at 24 hours post-fertilization.
  • This dataset serves as a valuable resource for the developmental biology community.

Outlook:

  • Single-cell genomics is transforming the study of developmental biology.
  • Further research can leverage this resource to explore gene regulatory networks in early development.