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Related Experiment Videos

Epidermal growth factor: the receptor and its function.

G Todderud1, G Carpenter

  • 1Vanderbilt University School of Medicine, Department of Biochemistry, Nashville, TN 37232-0146.

Biofactors (Oxford, England)
|March 1, 1989
PubMed
Summary
This summary is machine-generated.

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Epidermal growth factor (EGF) is a mitogenic hormone that binds to cell surface receptors. Ligand binding activates the receptor

Area of Science:

  • Molecular Biology
  • Cell Signaling
  • Biochemistry

Background:

  • Epidermal growth factor (EGF) is a polypeptide hormone.
  • EGF exhibits mitogenic properties in vitro and in vivo.
  • EGF mediates biological responses through a cell surface receptor.

Purpose of the Study:

  • To investigate the mechanism of EGF-mediated cellular responses.
  • To understand the role of the EGF receptor's protein tyrosine kinase activity.
  • To identify signaling molecules downstream of the EGF receptor.

Main Methods:

  • Ligand binding assays to study EGF-receptor interaction.
  • Biochemical analysis of receptor phosphorylation.
  • Investigation of signal transduction pathways initiated by EGF.

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Main Results:

  • EGF binds to a transmembrane glycoprotein receptor.
  • Receptor activation involves its intrinsic protein tyrosine kinase.
  • Receptor phosphorylation by other kinases may modulate its function.
  • Ligand binding regulates an undefined molecule(s) for nuclear signal transmission.

Conclusions:

  • EGF receptor activation is crucial for transmitting mitogenic signals.
  • The intrinsic protein tyrosine kinase activity is central to EGF signaling.
  • Further research is needed to identify downstream signaling components.