The adenine nucleotides

Nucleotides consist of a purine or pyrimidine base linked to the five-carbon sugar ribose. The base plus sugar is a nucleoside; in a nucleotide the sugar is phosphorylated. Nucleotides may be mono-, di- or triphosphates.

Figure 3.1 shows the nucleotides formed from the purine adenine — the adenine nucleotides, adenosine monophosphate (AMP), adenosine diphosphate (ADP) and adenosine triphosphate (ATP) — as well as the nucleotide triphosphates formed from the purine guanine and the pyrimidine uracil (see also section 10.3.2 for a discussion of the role of cyclic AMP in metabolic regulation and hormone action).

In the nucleic acids (DNA and RNA; sections 9.2.1 and 9.2.2 respectively) it is the purine or pyrimidine that is important, carrying the genetic information. However, in the link between energy-yielding metabolism and the performance of physical and chemical work, what is important is the phosphorylation of the ribose. Although most reactions are linked to adenosine triphosphate, a small number are linked to guanosine triphosphate (GTP; see, for example, sections 5.7 and 9.2.3.2) or uridine triphosphate (UTP; section 5.5.3).

Supplements For Diabetics

Supplements For Diabetics

All you need is a proper diet of fresh fruits and vegetables and get plenty of exercise and you'll be fine. Ever heard those words from your doctor? If that's all heshe recommends then you're missing out an important ingredient for health that he's not telling you. Fact is that you can adhere to the strictest diet, watch everything you eat and get the exercise of amarathon runner and still come down with diabetic complications. Diet, exercise and standard drug treatments simply aren't enough to help keep your diabetes under control.

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