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Assessment of Mitochondrial Functions and Cell Viability in Renal Cells Overexpressing Protein Kinase C Isozymes
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Assessment of Mitochondrial Functions and Cell Viability in Renal Cells Overexpressing Protein Kinase C Isozymes

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[Effect of phosphoenolpyruvate on creatine kinase activity in rabbit muscles]

E P Chetverikova, N A Rozanova

    Ukrains'Kyi Biokhimichnyi Zhurnal
    |July 1, 1977
    PubMed

    Abstract:

    Phosphoenolpyruvate (PEP) is a potent inhibitor of muscle creatine kinase. The inhibition of ATP formation is more pronounced at pH 7.0. The substrates, creatine and creatine phosphate, partially prevent the inhibition of the enzyme activity by PEP, creatine being as an effector.

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    Cyclic Adenosine Monophosphate (cAMP) is an essential second messenger that activates protein kinase A (PKA) and regulates various biological processes. A single epinephrine molecule binds to GPCR and activates several heterotrimeric G proteins, each stimulating multiple adenylyl cyclase, amplifying the signal, and synthesizing large numbers of cAMP molecules. Small changes in cAMP concentration affect PKA activity. The binding of four cAMP molecules induces a conformational change in PKA,...

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