Synthetic omega-conotoxin: a potent calcium channel blocking neurotoxin.


The Ca2+ channel blocking action of synthetic omega-conotoxin (omega CTX) was studied on isolated frog dorsal root ganglion neurons using a 'concentration clamp' technique which enabled internal perfusion and rapid external solution change. At 100 nM, omega CTX showed a time-dependent depression of Ca2+ current (ICa). At higher concentrations, omega CTX… (More)


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