K of the latent provirus in J-Lat 9.2 cells is TI of the 5'LTR caused by the transcription of the host PP5* gene. This interfering transcription results in the lack of Sp1 and the presence of the elongating RNAPII at the 5'LTR. Moreover, TI can be partially rescued by TNF- stimulation, as documented by the appearance of Sp1 and initiating RNAPII at the 5'LTR. The slight enrichment of the RNAPII in