S-(5′-Adenosyl)-L-homocysteine (AdoHCys, SAH) is a competitive inhibitor (versus AdoMet) of DNA methyltransferases. AdoHcy is used in a variety of studies on epigenetics in hyperhomocysteinemic states.Molecular Weight:~384.41kDApplications:Studying enzyme kinetics, and screening small molecular inhibitors of Sadenosyl homocysteine hydrolase and histone methyltransferases for drug discovery and HTS applications.Storage and Stability:May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 6 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.