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adenosine diphosphate |
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adenosine diphosphate: see adenine adenine , organic base of the purine family. Adenine combines with the sugar ribose to form adenosine, which in turn can be bonded with from one to three phosphoric acid units, yielding the three nucleotides adenosine monophosphate, adenosine diphosphate, and
..... Click the link for more information. ; adenosine triphosphate adenosine triphosphate (ATP) , organic compound composed of adenine, the sugar ribose, and three phosphate groups. ATP serves as the major energy source within the cell to drive a number of biological processes such as photosynthesis, muscle contraction, and the ..... Click the link for more information. . adenosine diphosphate [ə¦den·ə‚sēn ‚dī′fäs·fāt] (biochemistry) C10H15N5O10P2A coenzyme composed of adenosine and two molecules of phosphoric acid that is important in intermediate cellular metabolism. Abbreviated ADP. Adenosine diphosphate (ADP) A coenzyme and an important intermediate in cellular metabolism as the partially dephosphorylated form of adenosine triphosphate. The compound is 5′-adenylic acid with an additional phosphate group attached through a pyrophosphate bond. ADP is produced from adenosine triphosphate and reconverted to this compound in coupled reactions concerned with the energy metabolism of living systems. ADP is also produced from 5′-adenylic acid by the transfer of a phosphate group from adenosine triphosphate in a reaction that is catalyzed by an enzyme, myokinase. See Metabolism Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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