2-(N-morpholino)ethanesulfonic acid (MES) was purchased from EMD-Calbiochem (Gibbstown, NJ). Adenosine, adenosine 5′-diphosphoribose (ADP ribose), adenosine 5′-monophosphate (AMP), p-aminohippuric acid, 1-ethyl-3-(3-methylaminopropyl)carbodiimide (EDC), gluteraldehyde, hydroxylamine hydrochloride, nicotinamide, nicotinamide adenine dinucleotide (NAD+), nicotinamide mononucleotide (NMN), potassium phosphate dibasic, pyridine (99.8%), sodium azide, sodium cyanoborohydride, and sodium phosphate monobasic were obtained from Sigma-Aldrich Chemical Co. (Milwaukee, WI). N-Hydroxysulfosuccinimide (Sulfo-NHS) was from Pierce (Rockford, IL). Acetylated histone H3 (K9) peptide (H3K9Ac) and acetylated histone H3 (K14) peptide (H3K14Ac) were from Upstate/Millipore (Temecula, CA). Solutions were prepared using purified water from a Millipore MilliQ system (Millipore Corporation, Bedford, MA). BcMag amine-terminated magnetic beads (50 mg/mL, 1 µm) were purchased from Bioclone, Inc. (San Diego, CA). The manual magnetic separator Dynal MPC-S was from Invitrogen Corporation (Carlsbad, CA).