This peptide is histone H4 (1-25) with acetylation at Lys16. It is biotinylated through a C-terminal GSGSK linker. Monoacetylation of histone H4 occurs predominantly at Lys16. Loss of monoacetylation at Lys16 is associated with human tumor cells. Provided at >95% peptide purity, this peptide was dissolved in distilled water at 1 mg/ml and re-lyophilized to powder form.