Nucleotides triphosphoric acid

In addition to the usual adenine nucleotides (such as adenosine 5-phosphate, adenosine 5-pyrophosphate, and adenosine 5-triphosphoric acid) present in bacterial extracts, several adenine nucleotides of uncertain structure have been reported. These substances, termed adenylyl peptides have been isolated from trichloroacetic acid extracts of Staphylococcus aureus ... 

The infected system was shown to contain deoxymidine 5-phosphate this observation is interesting, since this nucleotide has not yet been shown to be present in normal cells. The nucleotide is presumably used for the synthesis of thymidine 5-triphosphoric acid. Detectable quantities of 5-(hydroxymethyl)cytosine or of 5-(hydroxymethyl)cytosine nucleotides were not present, despite the fact that this base is a normal constituent of the phage deoxyribonucleic acid. Explanations for this observation are that (a) the amount present in the acid-soluble fraction at any given moment is too small for detection by the methods of anal3rsis employed, or (b) the newly synthesized 5-(hydroxymethyl)cytosine is directly incorporated into deoxyribonucleic acid. 

The adenine nucleotide system consists of the following members adenosine 5 -phosphoric acid (AMP), adenosine diphosphoric acid (ADP), and adenosine triphosphoric acid (ATP). The structures of these compounds are given in Fig. 5. These structures have been confirmed by the classical chemical synthesis of Todd and his co-workers. ... 

Nucleotides, in addition, carry phosphoric acid in ester linkage with the ribose (or deoxyribose) component. The 5 -esters are biologically important here the phosphoric acid (or pyrophosphoric or triphosphoric acid) is bound to the —CH2OH group of the sugar moiety (cf. ATP, uridine and cytidine diphosphate Chapt. Vl-5). 

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