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Updated: Feb 1, 2026

Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers
Published on: September 4, 2015
Solid-phase synthesis of a novel phalloidin analog with on-bead and off-bead actin-binding activity
Antoine Blanc1, Mihajlo Todorovic, David M Perrin
1Chemistry Department, UBC, 2036 Main Mall, Vancouver, V6T-1Z1, Canada. dperrin@chem.ubc.ca.
Abstract:
Specific effectors of actin polymerization have found use as dynamic probes of cellular morphology that may be used to gauge cellular response to stimuli and drugs. Of various natural products that target actin, phalloidin is one of the most potent and selective inhibitors of actin depolymerization. Phalloidin and related members of the phallotoxin family are macrocyclic heptapeptides bearing a characteristic and rigidifying transannular tryptathionine bridge. Here we describe a solid-phase synthesis of a new phalloidin analog as a prototype for library development with the potential for on- and off-bead screening. To validate our method, we labelled the phalloidin derivative with a fluorescent dye which stained actin in CHO cells. Furthermore, a bioassay was developed allowing actin polymerization on beads carrying a phalloidin derivative.
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