H2A.Z (pht1) ChIP-seq data in 968, Y0036, and swc5-del strains. H2A.Z (pht1) ChIP-seq data in 968, Y0036, and swc5-del strains

After finding a QTL hotspot in a fission yeast cross of strains 968xY0036 that was apparently driven by frame shift mutation in swc5 (swc5-fs), we have determined the genome-wide occupancy of the histone variant H2AZ (PhT1). Indeed swc5 has been shown to affect H2AZ occupancy. To test the impact of swc5-fs on H2A.Z deposition, we performed genome-wide chromatin immuno-precipitation of H2A.Z coupled with deep sequencing (ChIP-seq) in the two parental strains (968, Y0036) and in a swc5 deletion strain. We also assed the histone H3 occupancy as a positive control. We generated pht1-myc tagged strains to precipitate H2AZ with Myc antibody. Several negative controls have been performed, in particular pulldowns with the non tagged strains. Results show a reduced H2A.Z occupancy at the +1 histone in both Y0036 and swc5-deletion strains.