S-Adenosylhomocysteine

S-Adenosyl-l-homocysteine (SAH) is the biosynthetic precursor to homocysteine. SAH is formed by the demethylation of S-adenosyl-l-methionine. Adenosylhomocysteinase converts SAH into homocysteine and adenosine. S-Adenosyl-l-homocysteine (SAH) is the biosynthetic precursor to homocysteine. SAH is formed by the demethylation of S-adenosyl-l-methionine. Adenosylhomocysteinase converts SAH into homocysteine and adenosine.