A1304 Sigma

β-Amanitin from Amanita phalloides

~90% (HPLC)


Biochem/physiol Actions

Toxic constituent of the mushroom, Amanita phalloides, inhibits eukaryotic RNA polymerase II and III, but not RNA polymerase I or bacterial RNA polymerase. Inhibits mammalian protein synthesis.

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from Amanita phalloides, ≥90% (HPLC), powder

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