A set of transgenic insertion stocks derived by TE mobilization using the P-element construct P{GawB}. The P{GawB} construct carries a w+mW.hs mini-white visible marker and Scer\GAL4 driver/enhancer trap sequences. The GAL4-UAS system is a binary system using Scer\GAL4, a yeast transcription activator protein gene, and Scer\UAS, the DNA binding site for the GAL4 protein. The P{GawB} construct acts as an enhancer trap: expression of the GAL4 is sensitive to enhancers in the genomic region of an insertion. When paired with a construct or insertion carrying a reporter gene downstream of Scer\UAS, the reporter gene is driven by and reflects the expression of the GAL4.
Approximate location; corresponds to estimated site of insertion of mdg3 element in the P{GawB}NP0225 parental strain.
Repetitive region: within mdg3 element (not found at this location in the sequenced stain).
Drives expression in a subset of larval mushroom body calyx glomeruli and of uniglomerular antennal lobe projection neurons.
ScerGAL4NP0225 drives expression in around 68 uniglomerular antennal lobe projection neurons. The cell bodies of around 31 of these neurons are positioned in the anterior-dorsal part of the antennal lobe. Around 29 cell bodies are found in the lateral part and around 9 are positioned ventrally. These neurons project to a large number of antennal lobe glomeruli including VM7d and VP4.
Expression is observed in 67-73 projection neurons in 35 of 43 antennal glomeruli.