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Related Experiment Videos

Mutant WD-repeat protein in triple-A syndrome.

A Tullio-Pelet1, R Salomon, S Hadj-Rabia

  • 1Unité de Recherches sur les Handicaps Génétiques de l'Enfant INSERM U-393, Paris, France.

Nature Genetics
|November 4, 2000
PubMed
Summary
This summary is machine-generated.

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Triple-A syndrome, a rare genetic disorder, is caused by mutations in the novel AAAS gene. This gene encodes the ALADIN protein, crucial for nervous system development and function.

Area of Science:

  • Genetics
  • Neurology
  • Endocrinology

Background:

  • Triple-A syndrome (Allgrove syndrome) is an autosomal recessive disorder.
  • Characterized by adrenal insufficiency, achalasia, and alacrima.
  • Evidence suggests autonomic and potentially central nervous system involvement.

Purpose of the Study:

  • To identify the genetic cause of Triple-A syndrome.
  • To elucidate the underlying molecular mechanisms of the disease.

Main Methods:

  • Fine-mapping linkage disequilibrium in North African families.
  • BAC contig sequencing to identify candidate genes.
  • Mutation analysis in affected individuals.

Main Results:

Related Experiment Videos

  • Identified a novel gene, AAAS, on chromosome 12q13.
  • Found five homozygous truncating mutations in unrelated patients.
  • A founder mutation in North African families was identified, dating back over 2,400 years.
  • The AAAS gene encodes ALADIN, a WD-repeat protein.

    • Conclusions:

    • Mutations in AAAS cause Triple-A syndrome.
    • ALADIN's WD-repeat structure suggests a regulatory role.
    • Gene expression in neuroendocrine and cerebral tissues indicates involvement in peripheral and central nervous system development.