Enhanced neurotransmitter release is associated with reduction of neuronal branching in a Drosophila mutant overexpressing frequenin.

Abstract excerpt

Frequenin is a Drosophila Ca2+ binding protein whose overexpression causes a chronic facilitation of transmitter release at the larval neuromuscular junction and multiple firing of action potentials. These functional abnormalities are similar to those found in other hyperexcitable mutants (Shaker, ether-a-gogo, Hyperkinetic) which, in turn, exhibit increased branching at the motor nerve endings. We report here...

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