sentences:  The toxins may also cause disruptions in the plasma membranes resulting in organelles that are normally in the cytoplasm to be found in the extracellular matrix.beta-Amanitin is also an inhibitor of eukaryotic RNA polymerase II and RNA polymerase III, and as a result, mammalian protein synthesis.It has not been found to inhibit RNA polymerase I or bacterial RNA polymerase.