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Related Experiment Videos

[Nuclear proteins--substrates for cAMP-dependent protein kinase].

M V Nesterova, A I Glukhov, A G Aprikian

    Biokhimiia (Moscow, Russia)
    |July 1, 1987
    PubMed
    Summary

    Cyclic AMP-dependent protein kinase phosphorylates nuclear proteins in pig brains. DNA influences which histone proteins are accessible for phosphorylation, affecting the kinase

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    CHARACTERISTICS OF TUMORS THAT DEVELOPED IN MICE AFTER TREATMENT WITH IRRADIATED SYNGENEIC MESENCHYMAL STEM CELLS OF BONE MARROW.

    Tsitologiia·2018

    Area of Science:

    • Biochemistry
    • Molecular Biology
    • Neuroscience

    Context:

    • Nuclear proteins play crucial roles in cellular regulation.
    • cAMP-dependent protein kinase (PKA) is a key signaling enzyme.
    • Understanding protein phosphorylation in the brain is vital for neuroscience.

    Purpose:

    • To investigate the phosphorylation of nuclear proteins by cAMP-dependent protein kinase in porcine brain.
    • To identify specific nuclear protein substrates for PKA.
    • To elucidate the role of DNA in regulating PKA substrate accessibility.

    Summary:

    • Nuclear proteins from porcine brain were studied as substrates for cAMP-dependent protein kinase.
    • Lysine-rich histones (H1, H2a, H2b) accept phosphate in chromatin phosphorylation.
    • In intact nuclei, only histone H1 is phosphorylated by PKA, and DNA presence alters histone phosphorylation patterns.

    Impact:

    • Reveals DNA's regulatory role in PKA substrate accessibility within the nucleus.
    • Provides insights into the mechanisms of nuclear protein regulation in the brain.
    • Contributes to understanding signal transduction pathways in neuronal function.

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