... wassimilar in all four strains, and was equally increased byHU treatment (as revealed with anti-ryH4). These dataindicate that Hat2, but not Hif1, participates in the catalytic function of ... acetylated at position 5, 12, or16; and anti-H3 acetylated at position 9, 14, 27, or 56.From Abcam (Cambridge, UK): anti-H4 acetylated at resi-due 8 or 91, and also a- ryH4, anti-H3 acetylated at posi-tion ... plusQMA cartridges (Waters, Milford, MA, USA), and employed for the in vitro HAT specificity assays.HAT assaysFor determination of enzymatic activity in chromatographicfractions, a new assay method...