Chromatin immunoprecipitations were performed with cross-linked chromatin from 4 x 10 6 293 cells, treated with Forskolin #3828 (30 μM, 1h) and either 20 μl of CBP (D6C5) Rabbit mAb or 2 μl of Normal Rabbit IgG #2729, using SimpleChIP ® Enzymatic Chromatin IP Kit (Magnetic Beads) #9003. The enriched DNA was quantified by real-time PCR using human ALS2 exon 1 primers, SimpleChIP ® Human NR4A3 Promoter Primers #4829, and SimpleChIP ® Human α Satellite Repeat Primers #4486. The amount of immunoprecipitated DNA in each sample is represented as signal relative to the total amount of input chromatin, which is equivalent to one.