Share this entry
phalloidin Line breaks: phal|loid¦in
Pronunciation: /faˈlɔɪdɪn/

Definition of phalloidin in English:


[mass noun] Chemistry
The toxin present in the death cap toadstool. It is a peptide with seven amino acids in a ring structure bridged by a sulphur atom.
Example sentences
  • We show here that photosensitization with BAYy 3118 induces an immediate loss of actin reactivity with phalloidin, a toxin that specifically forms tight complexes with polymerized F - actin.
  • However, since phalloidin stabilizes F-actin structure and virtually abolishes the dissociation of actin monomers from filament ends, it also inhibits the dynamic behavior of actin filaments.
  • Egg chambers were stained with Alexa 488-labeled phalloidin to reveal actin-rich structures (blue).


1930s: from modern Latin phalloides, specific epithet of the death cap toadstool Amanita phalloides (based on Greek phallos 'phallus') + -in1.

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove adverts and access premium resources