Also found in: Dictionary, Wikipedia.


A highly toxic, heat-stable bicyclic oligopeptide in the mushroom Amanita phalloides. It inhibits transcription by certain RNA polymerases.
References in periodicals archive ?
On the nephrotoxicity of alpha-amanitin and the antagonistic effects of silymarin in rats.
The Meixner test in the detection of alpha-amanitin and false-positive reactions caused by psilocin and 5-substituted tryptamines.
Doctors called a mycologist who questioned the patient and identified the mushroom as the aptly named "death angel," or Amanita bisporigera, which contains the heat-stable toxin alpha-amanitin capable of destroying the liver.
Full browser ?