GSM1217294: seq-SDQ3866_MRE11_FEM2_AD_ChIP_Rep2; Caenorhabditis elegans; ChIP-Seq
Worms are frozen, ground, crosslinked for 20 minutes in EGS, and for an additional 10 minutes in EGS plus formaldehyde. Later, washed pellets are resuspended in FA buffer and subjected to sonication in Bioruptor (1 hour of 30 seconds with 1 minute rests in between). Extracts are then spun down and soluble fraction is stored for quality tests and future ChIP. Worm extract from adult worms and 5 ?g of affinity purified antibody was used for ChIP. Dynal Protein A or G beads were used to recover the ChIPed DNA.  Samples were then treated with RNase A and Proteinase K, and reverse crosslinked at 65°C. ChIPed DNA was purified and then quantified using the Pico Green HS fluorescent assay. Worm_ChIP-seq_ DNA_Library_Preparation_vSS2. ChIP and 10ng of input are blunted (T4 polymerase), an A-overhang is added (Klenow), DNA is ligated (concentrated T4 ligase) to annealed adaptors, size-selected, and amplified by PCR.Changes: Ligate O/N at 16C. Use adapters and primer cocktail from Illumina TruSeq kit. Use AMPure cleanup in the place of Qiagne cleanup. Use Pippin prep for size selection . Prepared sample are sequenced using Illumina GAII or HiSeq2000 at the High Throughput Sequencing Facility of University of North Carolina at Chapel Hill or Cambridge.
GEO Accession
GSM1217294