2'-deoxyadenosine-3'-monophosphate: A naturally occurring inhibitor of adenylate cyclase in amphibian and mammalian cells

Add time:09/04/2019    Source:sciencedirect.com

A naturally occurring inhibitor of adenylate cyclase has been found in various rat tissues and toad erythrocytes. The compound containing this inhibitory activity has been isolated from several cell types. Physical, chemical, and enzymatic analyses define this inhibitor as 2'-deoxyadenosine-3'-monophosphate (2'-deoxy-3'-AMP). Measurements of the effect of various nucleoside monophosphates on adenylate cyclase activity reveal that the inhibitory activity is specific for 2'-deoxy-3'-AMP. In addition, the metabolism of this inhibitor may be relatively specific since only aminophylline and cAMP appear to inhibit the breakdown of 2'-dexy-3'-AMP by liver microsomes. The presence of this inhibitor suggests the possibility that deoxynucleotides may play an important role in the action of hormones and the regulation of intracellular metabolism.

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