UASt regulatory sequences drive expression of a 3.4kb Syn cDNA in which the two putative PKA phosphorylation sites have each been mutated from Ser to Ala (non-phosphorylatable mutation).
Pan-neuronal expression of Syn1-12.Scer\UAS, under the control of Scer\GAL4elav-C155 fails to rescue the associative learning defects found in Syn97 mutants.