The HSV-1 ICP22 protein selectively impairs histone repositioning upon Pol II transcription downstream of genes (ChIPmentation)

To look at the deposition of the histone marks in the downstream regions of DoTT genes, HFFF cells were either mock, WT HSV-1 (strain F and 17) or ΔICP22 virus infected. Throught the course of infection (for the marked samples), cells were treated with 350 ug/ml PAA. Samples were processed according to the original ChIPmentation protocol (Schmidl C et al. ChIPmentation: fast, robust, low-input ChIP-seq for histones and transcription factors. Nat Methods. 2015) with few changes as explained in the Materials and Methods section. We profiled several canonical histones as well as marks of repressive and active chromatin on mock and WT HSV-1 infected cells with ChIPmentation. For the histone H1, cells were also infected with ΔICP22.