Elsevier

Biochemical Pharmacology

Volume 26, Issue 14, 15 July 1977, Pages 1287-1290
Biochemical Pharmacology

Inhibitory effects of cordycepin on cyclic nucleotide-dependent and cyclic nucleotide-independent protein kinases

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Abstract

The in vitro effect of cordydepin was tested using various protein kinase preparations. These included cyclic AMP-dependent protein kinase (A-PK) from bovine heart, cyclic GMP-dependent protein kinase (G-PK) from fetal guinea pig lung, and two cyclic nucleotide-independent nuclear protein kinases (PK-I and PK-II) prepared from rat hepatoma 3924A and rat liver. The 50 per cent inhibitory concentrations (id50) of cordycepin for A-PK and G-PK ranged from 1.5–5.0 × 10−4M and 2.5–8.0 × 10−4 M, respectively, depending on the presence or absence of cyclic AMP and cyclic GMP in the assay. The id50 of cordycepin with either hepatoma 3924A or rat liver PK-I and PK-II was 4.5 × 10−5 M and 1.0 × 10−3 M. respectively. The inhibitory effect of cordycepin was competitive with respect to ATP in all cases. The K{m} for ATP was increased 3-fold and 5-fold by 5 × 10−4 M cordycepin for G-PK and A-PK, respectively, while the Km for ATP was increased 10-fold and 4-fold by 1 × 10−3 M cordycepin for PK-I and PK-II, respectively.

References (31)

  • D.G. Johns et al.

    Biochem. Pharmac.

    (1976)
  • H.T. Abelson et al.

    Biochim. biophys. Acta

    (1972)
  • M. Delseny et al.

    Biochem. biophys. Res. Commun.

    (1975)
  • H. Fouquet et al.

    Archs Biochem. Biophys.

    (1975)
  • B. Horowitz et al.

    Archs Biochem. Biophys.

    (1976)
  • H. Klenow

    Biochim. biophys. Acta

    (1963)
  • M. Adesnik et al.

    J. molec. Biol.

    (1972)
  • T. Higashinakagawa et al.

    Expl Cell Res.

    (1972)
  • J.F. Kuo et al.

    J. biol. Chem.

    (1976)
  • W.N. Kuo et al.

    J. biol. Chem.

    (1976)
  • P.G. Plagemann

    Archs. Biochem. Biophys.

    (1971)
  • F.R. Butcher et al.

    Expl Cell Res.

    (1972)
  • O.J. Martelo et al.

    Biochem. biophys. Res. Commun.

    (1974)
  • R.C. Desrosiers et al.

    Nucl. Acids. Res.

    (1976)
  • H.E. Kann et al.

    Molec. Pharmac.

    (1972)
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    This research was supported by Grant CA-14162 (RIG) from the National Cancer Institute and Grant HL-15696 (JFK) from the National Heart and Lung Institute.

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