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Related Concept Videos

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...
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...
Eukaryotic Transcription Inhibitors01:52

Eukaryotic Transcription Inhibitors

Certain biochemical processes, such as embryonic development and cell growth regulation, depend on the repression of specific genes. DNA binding proteins known as eukaryotic transcription inhibitors regulate the repression of gene expression in eukaryotes. The presence of these inhibitors at the required location and time in the cell is triggered by the presence of hormones and additional signals from other cells.
Eukaryotic transcription inhibitors usually contain two distinct domains, a DNA...
What is Gene Expression?01:42

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?01:36

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...
Genomic Imprinting and Inheritance02:30

Genomic Imprinting and Inheritance

Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...

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Related Experiment Video

Updated: May 14, 2026

Application of RNAi and Heat-shock-induced Transcription Factor Expression to Reprogram Germ Cells to Neurons in C. elegans
07:53

Application of RNAi and Heat-shock-induced Transcription Factor Expression to Reprogram Germ Cells to Neurons in C. elegans

Published on: January 1, 2018

Repressive translational control in germ cells.

Fangfang Lai1, Mary Lou King

  • 1Department of Cell Biology, University of Miami Miller School of Medicine, Miami, Florida 33136, USA.

Molecular Reproduction and Development
|February 15, 2013
PubMed
Summary

Early embryonic development relies on maternal mRNAs, not new gene activation. This review explores how Pumilio and Nanos proteins repress translation in germ cells to ensure proper lineage and prevent somatic cell fate.

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Slide Preparation Method to Preserve Three-dimensional Chromatin Architecture of Testicular Germ Cells
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Defining the Program of Maternal mRNA Translation during In vitro Maturation using a Single Oocyte Reporter Assay
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Defining the Program of Maternal mRNA Translation during In vitro Maturation using a Single Oocyte Reporter Assay

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Related Experiment Videos

Last Updated: May 14, 2026

Application of RNAi and Heat-shock-induced Transcription Factor Expression to Reprogram Germ Cells to Neurons in C. elegans
07:53

Application of RNAi and Heat-shock-induced Transcription Factor Expression to Reprogram Germ Cells to Neurons in C. elegans

Published on: January 1, 2018

Slide Preparation Method to Preserve Three-dimensional Chromatin Architecture of Testicular Germ Cells
07:34

Slide Preparation Method to Preserve Three-dimensional Chromatin Architecture of Testicular Germ Cells

Published on: January 10, 2014

Defining the Program of Maternal mRNA Translation during In vitro Maturation using a Single Oocyte Reporter Assay
08:00

Defining the Program of Maternal mRNA Translation during In vitro Maturation using a Single Oocyte Reporter Assay

Published on: June 16, 2021

Area of Science:

  • Developmental Biology
  • Molecular Biology
  • Genetics

Background:

  • Embryonic development initially relies on maternally supplied messenger RNAs (mRNAs) for genetic control, preceding zygotic transcription.
  • Translational control of these maternal mRNAs is crucial for regulating gene expression during early development.
  • Establishing the germ cell lineage requires precise regulation, including translational repression of germline mRNAs and suppression of somatic cell-fate signals.

Purpose of the Study:

  • To review the mechanisms of repressive translational regulation in the germline.
  • To focus on the roles of conserved RNA-binding proteins Pumilio and Nanos in this process.
  • To identify common themes in germline translational control.

Main Methods:

  • Literature review of studies on embryonic development, germ cell lineage specification, and translational control.
  • Analysis of the functions of Pumilio and Nanos proteins in regulating maternal mRNA translation.
  • Synthesis of findings to identify conserved regulatory principles.

Main Results:

  • Pumilio and Nanos proteins are key regulators that repress the translation of specific maternal mRNAs in the germline.
  • This repression is essential for preventing premature differentiation and for maintaining the germline fate.
  • Conserved mechanisms involving these proteins highlight fundamental aspects of early development across species.

Conclusions:

  • Repressive translational control mediated by proteins like Pumilio and Nanos is vital for germline development.
  • These mechanisms ensure the integrity of the germline by balancing developmental signals.
  • Understanding these processes provides insights into conserved strategies for lineage determination in animals.