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.
11.279
Drives expression in histoblasts and histoblast nests, in enteroblasts, and in intestinal stem cells.
ScerGAL4esg-NP5130 drives expression in abdominal histoblast nests and histoblasts, but not in cuticular larval epidermal cells.
ScerGAL4esg-NP5130 expression is observed in 36% of small cells that occupy a basal position within the adult midgut epithelium.
About half of esg-positive (ScerGAL4esg-NP5130 expression) cells lack N signalling (do not express EcollacZDdc.be2.E(spl)m8-HLH); these exhibit characteristics of intestinal stem cells and enteroblasts.
Expression in second instar leg discs is excluded from the distal-most regions. Third instar expression is observed in the proximal region of the leg discs.
NP5130-3-1
Location 2L:15329700-15329701 refined by FlyBase alignment of dbGSS accession AG218990 to D. melanogaster arm Release_4 and heterochromatin Release_3.2b. Insertion orientation revised.