A mutated form of ci (with mutations in the potential PKA phosphorylation sites 1, 2, 3, A and B), tagged at the N-terminal end with the Tag:TBP-3G3 epitope is expressed under the control of UASt regulatory sequences. The amino acid changes are S838A, S855A, S856A, S891A, S892A, S962A and T1006A.
Percentage embryonic lethality in lines expressing ciScer\UAS.cPa under the control of various Scer\GAL4 driver lines: 38% (Scer\GAL4e22c driver), 92% (Scer\GAL4ptc-559.1 driver) and 36% (Scer\GAL4en-e16E driver). Percentage larval/pupal lethality in lines expressing ciScer\UAS.cPa under the control of Scer\GAL471B : 79%.