... presence of 20E,however, favors the formation of the AaEcR⁄ AaUSPheterodimer [13], indicating that the regulation of the activity of these proteins occurs through protein–pro-tein interactions, ... single protein. Interestingly, during the initialprocess of identifying the NR family members in the A. aegypti genome, we predicted two isoforms of AaFTZ-F1, differing only in their A ⁄ B region, ... meal(PBM), peaking at 18–24 h PBM [3]. 20E is one of the primary regulators in the synthesis of vitellogenin (Vg), the main YPP protein produced by the fat body [4,5]. The molecular mechanism of 20E...