mushroom poisoning
amanitin cytotoxin
cyclic peptide toxins
bicyclic octapeptides
RNA polymerase II inhibitor

https://www.sciencedirect.com/topics/nursing-and-health-professions/amanitin

interesting how poisonous mushrooms & snake venom use peptides.

Virucidal activity of a scorpion venom peptide variant mucroporin-M1 against measles, SARS-CoV and influenza H5N1 viruses.

https://khepri-node.dev.meta-infra.org/papers/virucidal-activity-of-a-scorpion-venom-peptide/21620914