Assay summary for ChIP-seq_Shkumatava_Lab_input_0001AS
Shkumatava Lab, Institut Curie
Whole brains, hearts, intestines and testis were dissected from adult male AB zebrafish (brains, hearts and testis = 10-month-old; hearts and intestines = 1-year-old). Two biological replicates were prepared from brain, heart (1-year-old), intestine and testis, whereas one biological replicate was prepared from 10-month-old heart. Each biological replicate was prepared using: 12 brains, 20 hearts, 5 intestines and 8 testis. All tissues were homogenized and cross-linked in 1% formaldehyde, washed and lysed. Chromatin was sheared using a Covaris S220 ultrasonicator to a DNA fragment size of 175 bp (10-month-old samples) or 200 bp (1-year-old samples). ChIP-seq was performed as previously described (Guenther et al. 2008) using 5 ug Abcam H3K27ac antibody (ab4729, lot# GR259887-1) bound to Dynal Protein A linked beads (Invitrogen). Reverse cross-linked and phenol:chloroform purified chromatin was used for single-end library preparation following standard Illumina protocols. DNA fragments with an average size of 175 bp or 200 bp were used for single-end library preparation following standard Illumina protocols.