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Related Experiment Videos

Yeast activators stimulate plant gene expression.

J Ma1, E Przibilla, J Hu

  • 1Department of Biochemistry and Molecular Biology, Harvard University, Cambridge, Massachusetts 02138.

Nature
|August 18, 1988
PubMed
Summary
This summary is machine-generated.

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The yeast transcriptional activator GAL4 (Gal4) and its derivatives can stimulate gene expression in plant cells. This demonstrates the broad applicability of GAL4

Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • GAL4 is a yeast transcriptional activator with distinct DNA-binding and activation functions.
  • Its activation domains can be replaced by various peptides, including synthetic amphipathic alpha-helices.
  • These activating sequences often possess an excess negative charge, similar to the yeast activator GCN4.

Purpose of the Study:

  • To investigate the ability of GAL4 derivatives to stimulate gene expression in plant cells.
  • To determine if the transcriptional activation function of GAL4 is conserved across different eukaryotic kingdoms.

Main Methods:

  • Constructing GAL4 derivatives with modified activation domains.
  • Introducing GAL4 binding sites upstream of reporter genes in plant cells.

Related Experiment Videos

  • Assessing gene expression levels to quantify transcriptional activation.

    • Main Results:

    • GAL4 derivatives successfully stimulated gene expression in plant cells.
    • This indicates that the transcriptional machinery in plants can recognize and respond to GAL4-mediated activation.
    • The findings extend the known host range for GAL4-mediated transcriptional activation.

    Conclusions:

    • GAL4-based transcriptional activation is functional in plants.
    • This provides a powerful tool for gene expression studies and manipulation in plant systems.
    • The conserved nature of transcriptional activation mechanisms is highlighted.