Deletion of the cleavage site (therefore protein tethered to membrane) and Gobinding domain (amino acids 845-855) of the Appl coding region.
Expressing ApplsdΔCg.UAS under the control of Scer\GAL4GMR91H05 leads to retraction of adult giant fiber terminals.
When expression is driven in the motoneurons muscles 6 and 7 (abdominal segment 3) total number of synaptic boutons is increased, percentage of satellite boutons is increased and the number of normal boutons is unchanged.