Lipophilic dye-based fret assays for clostridial toxin activity

摘要

Compositions useful for detecting Clostridial toxin activity comprising a cell that comprises a membrane-associated Clostridial toxin substrate comprising a first member of a fluorescence resonance energy transfer pair; and a Clostridial toxin recognition sequence including a cleavage site; and a membrane-associated second member of the FRET pair and methods useful for determining Clostridial toxin activity using such Clostridial toxin substrates.