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  • Title: The regulatory effect of ATP and its non-hydrolyzed analogs on heart adenylate cyclase.
    Author: Avdonin PV, Svitina-Ulitina IV, Tkachuk VA.
    Journal: Biochem Int; 1983 Oct; 7(4):493-9. PubMed ID: 6679743.
    Abstract:
    The effect of ATP on rabbit heart adenylate cyclase was investigated. The activation of adenylate cyclase by isoproterenol, guanyl nucleotides and NaF increases at a rise in ATP concentration. A similar regulatory effect is exerted by nonhydrolyzed analogs of ATP - adenyl-5'-ilimidodiphosphate and adenosine-5'-(alpha, beta-methylene) triphosphate. Consequently the regulatory influence of ATP is not due to chemical modification of the enzyme or to phosphorylation of endogenous GDP. Earlier we demonstrated that regulation of heart adenylate cyclase by ATP is not mediated by the adenosine binding center (Biokhimiya USSR (1982), 47, 455-464). It is assumed that the regulatory effect of ATP is accomplished by a specific binding site for this nucleotide.
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