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Related Experiment Videos

Evolutionary conservation of sequence elements controlling cytoplasmic polyadenylylation

A C Verrotti1, S R Thompson, C Wreden

  • 1Department of Molecular Pharmacology, University Medical Center at Stony Brook, NY 11794, USA.

Proceedings of the National Academy of Sciences of the United States of America
|August 20, 1996
PubMed
Summary
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This study reveals that the regulatory sequences controlling cytoplasmic polyadenylylation, crucial for messenger RNA (mRNA) translation, are conserved across diverse species like Xenopus, mice, and Drosophila, indicating ancient evolutionary preservation.

Area of Science:

  • Developmental Biology
  • Molecular Biology
  • Evolutionary Biology

Background:

  • Cytoplasmic polyadenylylation is a conserved process essential for translational activation of maternal mRNAs during early development.
  • Understanding the conserved mechanisms of gene expression regulation is key to deciphering developmental processes.

Purpose of the Study:

  • To investigate the evolutionary conservation of regulatory sequences governing cytoplasmic polyadenylylation.
  • To determine if Xenopus and mouse utilize similar sequences for polyadenylylation during meiotic maturation.
  • To examine conserved polyadenylylation signals in Xenopus and Drosophila embryos during early post-fertilization development.

Main Methods:

  • Interspecies microinjection experiments were performed using Xenopus and mouse oocytes.

Related Experiment Videos

  • Analysis of polyadenylylation regulation in Xenopus and Drosophila embryos post-fertilization.

    • Main Results:

    • Xenopus and mouse share identical regulatory sequences for controlling cytoplasmic poly(A) addition during meiotic maturation.
    • Xenopus and Drosophila embryos utilize functionally conserved signals for polyadenylylation during early development.
    • Sequence elements governing cytoplasmic polyadenylylation demonstrate cross-species functionality.

    Conclusions:

    • The regulatory sequence elements controlling cytoplasmic polyadenylylation are conserved across vertebrates and arthropods.
    • These findings suggest that both the regulatory sequences and their interacting trans-acting factors have been conserved since the divergence of these lineages.
    • Cytoplasmic polyadenylylation represents a fundamental, evolutionarily ancient mechanism for translational control in early development.