Act5C regulatory sequences drive expression of a GAL4::QF driver composed of the Scer\GAL4 DNA-binding and middle domains fused to the Ncra\QF activation domain. The Ncra\QF activation domain is the "QF2[w]" variant in which the activation domain is mutated to reduce activity by altering the charge on the C-terminus.
ScerGAL4QF.Act5C drives ubiquituous expressin.