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Structural and functional basis for hormone binding and receptor oligomerization

J A Wells1

  • 1Department of Protein Engineering, Genentech, Inc., South San Francisco, CA 94080.

Current Opinion in Cell Biology
|April 1, 1994
PubMed
Summary
This summary is machine-generated.

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Hormone-receptor interactions often change how receptors group together. Studies on human growth hormone and tumor necrosis factor receptors reveal key binding and oligomerization mechanisms applicable to many similar complexes.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Structural Biology

Background:

  • Single-pass transmembrane receptors frequently alter their oligomeric state after binding to hormones.
  • Understanding these conformational changes is crucial for deciphering cellular signaling pathways.

Purpose of the Study:

  • To elucidate the molecular mechanisms underlying hormone-induced receptor oligomerization.
  • To identify common principles governing hormone-receptor complex formation and function.

Main Methods:

  • Utilized mutational analyses to probe receptor-ligand interactions.
  • Employed biophysical techniques to study binding affinities and conformational dynamics.
  • Conducted structural studies to determine the atomic resolution of receptor complexes.

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Main Results:

  • Detailed insights into the binding interfaces and oligomerization interfaces of specific receptor complexes.
  • Identified key residues and structural motifs critical for receptor assembly upon hormone engagement.
  • Demonstrated conserved mechanisms of receptor activation across different hormone-receptor systems.

Conclusions:

  • The binding of hormones triggers significant changes in receptor oligomeric states.
  • Mechanisms governing human growth hormone and tumor necrosis factor receptor complex formation offer a generalizable model for other hormone-receptor systems.
  • These findings provide a foundation for understanding receptor signaling and developing targeted therapeutics.