UAS regulatory sequences drive expression of Hsap\OPN4 which is tagged with Tag:polyHis.
Hsap\OPN4UAS.Tag:polyHis is a suppressor of rhabdomere phenotype of ninaE17
Expression of Hsap\OPN4Scer\UAS.T:Zzzz\His6 partially rescues the rhabdomere morphogenesis defects of ninaE17 flies.