G protein mutations in human disease

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Identification and Classification of Position-specific GABAA Receptor Subunit Missense Variants for Their Role In Hippocampal Pyramidal Neurons
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L S Weinstein1, A Shenker

  • 1Molecular Pathophysiology Branch, National Institute of Diabetes, Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892.

Clinical Biochemistry
|October 1, 1993
PubMed

Insights

Heterotrimeric G proteins link cell signals to cellular responses. Mutations in G protein alpha subunits can cause disease by altering signaling, impacting human health.

Area of Science:

  • Molecular Biology
  • Cellular Signaling
  • Human Genetics

Background:

  • Heterotrimeric G proteins act as crucial signal transducers, connecting cell-surface receptors to intracellular pathways.
  • Dysregulated G protein signaling, due to toxins, gene expression changes, or mutations, has significant biological impacts.
  • G protein alpha subunit mutations are implicated in various human diseases.

Purpose of the Study:

  • To review the role of G protein alpha subunit mutations in human diseases.
  • To highlight the consequences of altered G protein signaling.
  • To discuss the pathogenic mechanisms involving G protein mutations.

Main Methods:

  • Literature review of G protein signaling pathways.
  • Analysis of genetic mutations in G protein alpha subunits.
  • Examination of disease pathogenesis linked to G protein dysfunction.

Main Results:

  • Mutations in G protein alpha subunit genes can result in constitutive activation or loss of function.
  • These mutations are identified as key factors in the pathogenesis of specific human diseases.
  • Examples include sporadic endocrine tumors, McCune-Albright syndrome, and Albright hereditary osteodystrophy.

Conclusions:

  • G protein alpha subunit mutations are significant contributors to human disease.
  • Understanding these mutations is vital for comprehending disease mechanisms and potential therapeutic targets.
  • Further research into G protein signaling dysregulation is warranted.

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