Purine Ring

Figure 6.32 Source of the Carbons and Nitrogen Atoms in Purine Rings

Nearly every carbon and nitrogen of the purine ring comes from a different source.

The starting compound is ribose 5-phosphate, a precursor metabolite generated in the pentose phosphate pathway. Then, in a highly ordered sequence, atoms from the other sources are added. Once this purine is formed, it is converted to adenylic and guanylic acid, which are components of the nucleic acids. To synthesize pyrimidine nucletotides, the pyrimidine ring is made first, and then attached to ribose 5-phosphate. After one pyrimidine nucleotide is formed, the base component can be converted into one of the other pyrimidines. ■ adenylic acid, p. 32, ■ guanylic acid, p. 32

Was this article helpful?

0 0
You Are What You Eat

You Are What You Eat

Nutrition is a matter that people spend their careers learning about and requires volumes of books to explain. My objective is to instruct you how to consume a healthy nutritional diet that aids your body in burning off fat instead of storing it. You do not require overwhelming science to get this.

Get My Free Ebook

Post a comment