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Transactivation abilities of Staf deletion mutants from an mRNA promoter, assayed in Drosophila cells. (A) Schematic structures of the various Staf deletion mutants. The A, B, and C domains of Staf are indicated. The Staf DNA binding domain is represented in black. (B) Representative CAT assays using extracts from Drosophila cells transfected with the effectors indicated above each lane.
