Biosynthesis and Metabolism

The biosynthesis and metabolism of homocysteine is presented in Figure 1. The ultimate source of homo-cysteine is dietary methionine. Methionine is first activated by addition of an adenosyl group (from ATP) to form S-adenosylmethionine (SAM). SAM is an important intermediate known as the universal methyl donor for its role as the methylating agent in a variety of essential reactions, including those involving DNA, RNA, proteins, membrane phospholipids,

Table 1 Structures and forms of homocysteine and related amino acids

Structures of homocysteine and related amino acids

Forms of homocysteine found in blood

Get The Body Of Your Dreams

Get The Body Of Your Dreams

Everybody wants to lose weight. This is one fact that is supported by the countless weight loss programs on the market along with the numerous weight loss products, ranging from snack bars, powdered juices, shakes and even slimming soaps and lotions.

Get My Free Ebook


Post a comment