FIGURE 2.

Occupancy of RNAPII, NELF, and DSIF by ChIP-Seq reveals an unannotated proximal HEXIM1 promoter. RNAPII, NELF, and DSIF occupancy in HeLa cells was determined by ChIP-Seq analyses as described under “Experimental Procedures.” A and B are UCSC Genome Browser tracks displaying the density of RNAPII, NELF, and DSIF around the HEXIM1 gene. The vertical axes indicate the number of reads contributing to the signal density. The RefSeq annotation track displays the position of genes using thin blocks (untranslated regions), thick blocks (exons), lines (introns), and arrowheads (direction).