Homozygous third instar larvae have a mild neuromuscular junction (NMJ) overgrowth phenotype with increased boutons and branching.
Expression of Mob2Scer\UAS.cUa under the control of Scer\GAL4elav-C155 fully rescues the Mob2H4-5 neuromuscular junction phenotype for both number of boutons and number of branch points.
Precise excision of the insertion reverts the mutant neuromuscular junction phenotype.