Immunoprecipitation of Rpb1 from HeLa cell extracts using Rabbit (DA1E) mAb IgG XP ® Isotype Control #3900 (lane 2) or Phospho-Rpb1 CTD (Ser5) (D9N5I) Rabbit mAb (lane 3). Lane 1 is 10% input. Western blot analysis was performed using Phospho-Rpb1 CTD (Ser5) (D9N5I) Rabbit mAb.

Chromatin immunoprecipitations were performed with cross-linked chromatin from 4 x 10 6 Hela cells and either 10 μl of Phospho-Rpb1 CTD (Ser5) (D9N5I) Rabbit mAb or 10 μl of Rpb1 NTD (D8L4Y) Rabbit mAb #14958, using SimpleChIP ® Enzymatic Chromatin IP Kit (Magnetic Beads) #9003. DNA Libraries were prepared from 5ng enriched ChIP DNA using NEBNext ® Ultra™ II DNA Library Prep Kit for Illumina ® , and sequenced on the Illumina NextSeq. The figure shows binding across the ZNF740 gene on chromosome 12. For additional ChIP-seq tracks, please download the product data sheet.

Chromatin immunoprecipitations were performed with cross-linked chromatin from 4 x 10 6 HeLa cells and either 10 μl of Phospho-Rpb1 CTD (Ser5) (D9N5I) 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 SimpleChIP ® Human β-Actin Promoter Primers #13653, human β-Actin intron 1 primers, SimpleChIP ® Human β-Actin 3' UTR Primers #13669, 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.