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  • Title: Role of calcium-dependent regulator protein (CDR) in inhibition of 3',5'-c AMP-phosphodiesterase by influenza virus. II. Kinetic studies on inhibition of CDR-dependent phosphodiesterase by influenza virus.
    Author: Krizanová O.
    Journal: Acta Virol; 1979 Jul; 23(4):303-13. PubMed ID: 40417.
    Abstract:
    As revealed by spectrophotometry, native but not heat-inactivated influenza virus in the presence of ATP reduced the activity of calcium-dependent regulator protein-stimulated 3',5'-c AMP-phosphodiesterase (CDR-PDE). ATP could be partially replaced by ADP but not by AMP. The degree of CDR-PDE inhibition increased with increasing virus concentration. But at very high virus concentrations the rate of 3',5'-c AMP hydrolysis by CDR-PDE was not linearly dependent on time. At appropriate virus concentrations the degree of inhibition of CDR-PDE activity remained unchanged for the whole reaction time.
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