This peptide is histone H3 (1-55) with acetylation at its N-terminus and an additional Lys residue on its C-terminus. A 6-carbon LC linker and biotin are conjugated to the epsilon side chain of this Lys. Provided at >95% peptide purity, this peptide was dissolved in distilled water at 1 mg/ml and re-lyophilized to powder form.