Specific inhibition of nuclear RNA polymerase II by α-amanitin

TJ Lindell, F Weinberg, PW Morris, RG Roeder… - Science, 1970 - science.org
TJ Lindell, F Weinberg, PW Morris, RG Roeder, WJ Rutter
Science, 1970science.org
α-Amanitin, a toxic substance from the mushroom Amanita phalloides, is a potent inhibitor of
DNA-dependent RNA polymerase II (the nucleoplasmic form) from sea urchin, rat liver, and
calf thymus. This compound exerts no effect on the activity of polymerase I (nucleolar form)
or polymerase III (also nucleoplasmic). The inhibition is due to a specific interaction with
polymerase II or with a complex of DNA and polymerase II.
α-Amanitin, a toxic substance from the mushroom Amanita phalloides, is a potent inhibitor of DNA-dependent RNA polymerase II (the nucleoplasmic form) from sea urchin, rat liver, and calf thymus. This compound exerts no effect on the activity of polymerase I (nucleolar form) or polymerase III (also nucleoplasmic). The inhibition is due to a specific interaction with polymerase II or with a complex of DNA and polymerase II.
AAAS