(A) HeLa cells were transfected with a GAL4-luciferase reporter construct (pFR-luc), a vector expressing a GAL4-DNA binding domain fusion with NF-kB p65 AD amino acids 416–551 (pGAL4-p65416–551), and a control expression vector, pKH3 (white bars), or the indicated quantities of expression construct pKH3-rv-cyclin240–270 (black bars) and pRL-Tk. Results are reported as ratios of luciferase versus Renilla activity. (B) HeLa cells transfected with GAL4 reporter vector (pFR-luc), pGAL4-p65416–551 fusion construct, and control expression vector, pKH3 (white bars), pKH3-rv-cyclin240–270 wild type (WT), or pKH3-rv-cyclin240–270 mutations (V260F or V260S) (black bars) and pRL-Tk. Results are reported as mean ± standard deviation of the ratio of luciferase activity versus Renilla activity from quadruplicate wells. The data presented in this figure are representative of two independent experiments.