Part of the Tip60 chromatin-remodeling complex which is involved in DNA repair. Upon induction of DNA double-strand breaks, this complex acetylates phosphorylated H2AV in nucleosomes and exchanges it with unmodified H2AV. Interacts with H2AV (Probable). Component of the Tip60 chromatin-remodeling complex which contains the catalytic subunit Tip60 and the subunits Domino, Tra1, Brd8, E(Pc), DMAP1, Pontin, Reptin, Ing3, Act87E, BAP55, Mrg15, MrgBP, Gas41 and YL-1. Belongs to the VPS72/YL1 family.