Western blot analysis of extracts from HeLa cells, serum-starved overnight, and either left untreated or treated with TPA #4174 for 4 hours, using Phospho-FRA1 (Ser265) (D22B1) Rabbit mAb #5841 (upper) and FRA1 (D80B4) Rabbit mAb #5281 (lower). Antibody phospho-specificity is shown by treating lysates with λ phosphatase.
Chromatin immunoprecipitations were performed with cross-linked chromatin from 4 x 10 6 PC-12 cells starved overnight and treated with β-NGF #5221 (50ng/ml) for 2h and either 10 μl of Phospho-FRA1 (Ser265) (D22B1) 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 SimpleChIP ® Rat CCRN4L Promoter Primers #7983, rat DCLK1 promoter primers, and SimpleChIP ® Rat GAPDH Promoter Primers #7964. 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.