A pentamer of a 38bp region of the ninaE promoter (each copy of the 38bp sequence contains the minimal 29bp fragment protected by gl protein in a footprinting assay plus additional flanking nucleotides) is fused upstream of a minimal Hsp27 promoter followed by sequence encoding lacZ tagged with a nuclear localization signal.
The reporter construct is expressed only in photoreceptor cells in the developing eye disc.
In third instar larva: expressed predominantly in photoreceptor cells in eye-antennal disc; also expressed in a small number of cells in the brain.
Previously described in Moses and Rubin, Genes Dev 5:583 .