
Fig. 4. trans-acting potential of Bcd domains in S2 cells. (A) Structure of the fusion proteins between the Gal4 DNA-binding domain and simple or multiple copies of the Bcd domains. (B) Transfections were performed with 1 µg of the UAS-CAT reporter and with 1 µg of pPAC (-) or its producer derivatives for the Gal4-Q (1), Gal4-3Q (2), Gal4-QA (3), Gal4-Q3A (4), Gal4-3Q3A (5), Gal4-3A (6), Gal4-C (7), Gal4-3C (8), Gal4-3A3C (9), Gal4-3Q3C (10) and Gal4-3ST (11) proteins.