Histone H2A Peptide 5Mg. Histone H2A Peptide, Substrate for HAT assays, SOURCE: Synthetic, PURITY: greater than or equal to 98% by HPLC MOLECULAR WEIGHT: approx 2. 08 kDa, FORM: Lyophilized powder, Storage Conditions -20 deg C, For Research Use Only! Not For Use in Humans, Size: 5Mg