Definition of phalloidin in English:

phalloidin

Line breaks: phal|loid¦in
Pronunciation: /faˈlɔɪdɪn
 
/

noun

[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.
    More 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).

Origin

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

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