N-Acetyl-DL-methionine

N-Acetyl-DL-methionine (CAS No.: 1115-47-5) is an endogenous amino acid derivative and acetylated form of methionine widely utilized in biochemical and metabolic research as a functional probe of methylation-dependent processes and cellular redox homeostasis. As a metabolite closely related to L-methionine, it participates in protein biosynthesis and serves as a precursor or contributor to transmethylation pathways, supporting the generation of methyl donors involved in DNA and RNA methylation as well as epigenetic regulation of gene expression. Through its role in one-carbon metabolism and its connection to folate-dependent cycles and homocysteine remethylation, N-Acetyl-DL-methionine is frequently applied to investigate mechanisms governing cellular metabolic balance, oxidative stress responses, and sulfur amino acid interconversion, including cysteine biosynthesis. In experimental systems, this compound has been employed to study protein modification, conformational dynamics, and the impact of methyl group availability on signaling pathways associated with metabolic regulation and redox control, although it does not exhibit classical target-specific inhibitory activity and is generally characterized by functional effects observed across low micromolar to millimolar concentration ranges depending on the assay context. Typical applications include use in cell-based models of metabolic flux, oxidative stress, and epigenetic modulation, as well as in vivo studies of amino acid metabolism, where dosing and exposure conditions are adjusted according to specific experimental objectives.