beta-Amanitin or β-amanitin is a cyclic peptide comprising eight amino acids. It is part of a group of toxins called amatoxins, which can be found in several mushrooms belonging to the Amanita genus. Some examples are the Death cap (Amanita phalloides) and members of the Destroying angel complex, which includes A. virosa and A. bisporigera. Due to the presence of α-amanitin, β-amanitin, γ-amanitin and ε-amanitin these mushrooms are highly lethal to human beings.

beta-Amanitin or β-amanitin is a cyclic peptide comprising eight amino acids. It is part of a group of toxins called amatoxins, which can be found in several mushrooms belonging to the Amanita genus. Some examples are the Death cap (Amanita phalloides) and members of the Destroying angel complex, which includes A. virosa and A. bisporigera. Due to the presence of α-amanitin, β-amanitin, γ-amanitin and ε-amanitin these mushrooms are highly lethal to human beings.