UASt regulatory sequences drive expression of the N-terminal of nSyb (amplified using PCR primers: 5' n-Syb (ACAGCCGAATTCGCTGAGGC) and 3' n-Syb-BsrB1 (CCAATTAGATCTCCGCTCACGCCGCCGTGATCGCC)) fused at its C-terminal to pHluorinSE (a pH-sensitive fluorescent protein).
The structure and function of neuro-muscular junctions in n-sybP.Scer\UAS.T:Avic\GFP-pHluorinSE; Scer\GAL4elav.PLu appears normal.