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Related Experiment Videos

The luteinizing hormone receptor

M L Dufau1

  • 1Molecular Endocrinology Section, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892, USA. dufau@helix.nih.gov

Annual Review of Physiology
|April 29, 1998
PubMed
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Advances in understanding the luteinizing hormone receptor (LHR) reveal its structure, function, and gene regulation. Key insights into hormone binding, signal transduction, and disease-related mutations are improving our knowledge of this G protein-coupled receptor.

Area of Science:

  • Endocrinology
  • Molecular Biology
  • Structural Biology

Background:

  • The luteinizing hormone receptor (LHR) is a G protein-coupled receptor (GPCR) crucial for reproductive functions.
  • Recent research has significantly advanced the understanding of LHR structure, function, and gene regulation over the past eight years.

Purpose of the Study:

  • To consolidate recent findings on LHR structure and function.
  • To explore the mechanisms of hormone binding, signal transduction, and the impact of mutations.
  • To elucidate the regulation and evolutionary aspects of the LHR gene.

Main Methods:

  • Localization of the hormone-binding domain to specific exons (1-7) within the extracellular region.
  • Development of models for hormone-receptor interaction based on crystal structures.

Related Experiment Videos

  • Overexpression of the extracellular domain for structural studies.
  • Analysis of disease-associated mutations in the transmembrane domain.
  • Elucidation of LHR gene structure and transcriptional regulation.

    • Main Results:

    • The extracellular domain contains leucine-rich repeats involved in hormone binding (LH/hCG).
    • Signal transduction is initiated by hormone binding and involves transmembrane regions.
    • Constitutive activating mutations in helix VI are linked to human diseases, providing insights into signal transfer.
    • LHR gene structure and transcriptional regulation are increasingly understood.
    • Sequence homology and gene structure analyses offer insights into GPCR evolution.

    Conclusions:

    • Major progress has been made in understanding LHR structure, function, and regulation.
    • Hormone-receptor interactions and signal transduction mechanisms are becoming clearer.
    • LHR mutations offer valuable insights into disease mechanisms and receptor function.
    • The study of LHR contributes to a broader understanding of GPCR evolution and function.