title: GSM1183921: ThioMac-GroSeq-notx-group-4; Mus musculus; OTHER
library_construction_protocol: Extraction-Gro-Seq Extraction-Gro-Seq: Nuclei were extracted from 8-12 million cells grown on 10 cm plates and nuclear run-on reactions were performed for 5 minutes at 30°C in the presence of Sarkosyl and BrUTP. RNA was extracted with Trizol, DNase-treated, base-hydrolyzed and dephosphorylated with PNK. BrUTP-labeled run-on RNA was immunopurified with anti-BrdUTP-coated agarose beads and precipitated overnight. Poly(A)-tailing was followed by cDNA synthesis using complementary poly(T)-primers. Excess oligo was removed by Exonuclease I and cDNA fragments of were purified on a denaturing 10% polyacrylamide TBE-urea gel. The recovered cDNA was circularized, linearized, amplified for 10-16 cycles. The final product was ran on 10% TBE gel, gel purified and cleaned-up using ChIP DNA clean & Concentrator Kit. The final libraries were sequenced using an Illumina Genome Analyzer II or HiSeq 2000. Extraction-ChIP-seq: Lysates were clarified from sonicated nuclei and protein-DNA complexes were isolated with antibody. Alternatively, lysates clarified from isolated nuclei were treated with MNase and protein-DNA complexes were isolated with antibody. Libraries were prepared according to Illumina's instructions. Briefly, DNA was end-repaired using a combination of T4 DNA polymerase, E. coli DNA Pol I large fragment (Klenow polymerase) and T4 polynucleotide kinase. The blunt, phosphorylated ends were treated with Klenow fragment (minus exo) and dATP to yield a protruding 3- 'A' base for ligation of Illumina's adapters which have a single 'T' base overhang at the 3? end. After adapter ligation, ChIP DNA was PCR-amplified with Illumina Genomic adaptors or with NEXTflex DNA barcodes adaptors for 18 cycles and library fragments (ChIP) (insert plus adaptor and PCR primer sequences) were size-selected (150-250bp) from a 2% agarose gel. The purified DNA was captured on an Illumina flow cell for cluster generation. Libraries were sequenced on Illumina Genome Analyzer II or Illumina HiSeq 2000 according to the manuactuere?s instructions.