Homocysteine: What is it and how is it related to disease?
Homocysteine (Hcy) is a sulphur-containing amino acid, which is derived during methionine metabolism and this is the only way it is produced in the body. An enzyme, S-adenosyl-L-methionine (SAM) synthetase, catalyses this process and is also a methyl donor for the synthesis of different compounds, such as proteins, nucleic acids and polyamines. Therefore it’s essential