Figure 7. RNA polymerase II (Pol II) density at target gene loci, as assessed by matrix ChIP assay (ref. 30).
Pol II was assessed at the start (exon 1) and end exons of the HMGCR and LDL-R genes. The ‘juvenile’ mice had higher Pol II densities at both HMGCR exons (#1, #19) and both LDL-R exons (#1, #18), compared to the ‘mature’ mice. These results exactly paralleled the directional changes seen in their cognate mRNAs (n, 6 determinations per group).
