Overexpression of Myc-PRMT6 does not affect basal transcription from the HIV-1 LTR promoter. A549 cells were transfected with a long terminal repeat (LTR)-Photinus luciferase transcriptional reporter plasmid with varying amounts of Myc-PRMT6 plasmid, as indicated. All samples were cotransfected with a SV40-promotered Renilla luciferase plasmid to control for transfection efficiency variations. Transfected cells were lysed and assayed for both Photinus and Renilla luciferase activities, the ratio of which is shown for each sample. Columns represent the means and standard deviations of three independent experiments.