LANA-mediated activation of the AP1 RE is Jun dependent. The EGFP-LANA or EGFP control vector and the pAP1-luc reporter were cotransfected with the Jun-DN expression construct or the empty vector control. Concentration of all vectors was 0.1 μg. Firefly luciferase was assayed at 48 hours. The results, which were normalized to that of the negative control group (EGFP control + control vector for Jun-DN), are the means of 3 experiments and are reported ± SD. RLU indicates relative luminescence units.