HEK293 cells were transfected with siCTL, or siDDX5. The next day, the cells that received siDDX5 were subsequently transfected with empty pcDNA3 vector (-), expression vectors encoding Flag-DDX5 (WT), or Flag-DDX5-RK (RK). Forty eight hours later, all the cells were subjected to DRIP-qPCR analysis. The average with the S.E.M. from 3 independent experiments is shown. Statistical significance was assessed using Student's t-test. *: p < 0.05; **: p < 0.01 and n.s.: not significant. 