Imprecise excision of the P{lacW} element, removing the initiation ATG codon. The deletion extends into intron 1, but not into exon 2. The deletion does not extend 5' from the n-sybF33P{lacW} insertion site.
nSybΔF33-8 mutant photoreceptor terminals show increased accumulation of synaptic vesicles but the number of autophagic vacuoles is similar to controls.