Activation of nuclear polypeptide synthesis in rat liver cells in the case of inhibition of template synthesis of proteins. Contribution of nuclear polypeptide synthesis to the change in the chromatin structure

The correlation between the activity of nuclear polypeptide synthesis (NPS) and template synthesis of proteins in rat liver cells was investigated. It was established that the NPS is activated under conditions of inhibition of protein synthesis in the cytoplasm. It was shown on model experiments that the systems of NPS and ADP-ribosylation of nuclear proteins compete in determining the general structure of chromatin: ADP-ribosylation promotes condensation, while NPS promotes decondensation of the chromatin.