The re-expression of GFP-FLN and GFP-αA rescues the developmental defect ofdouble mutant cells. The double mutant cell line, abpA-/abpC- was transformed with each fusion protein individually. Cells were allowed to develop on filters and compared to wild type. Expression of either GFP-FLN or GFP-αA rescued the ability of the mutant to form fruiting bodies while expression of either GFP-ABD did not. (A) AX2 wild type, (B) abpA-/abpC-, (C) GFP-FLN, (D) GFP-FLNABD, (E) GFP-αA, (F) GFP-αAABD.