Template-engaged and free RNA polymerase activities in rat liver nuclei after cortisone injection
نویسندگان
چکیده
منابع مشابه
Stimulating effect of Panax ginseng extract on RNA polymerase activity in rat liver nuclei.
It was shown that a single intraperitoneal injection of extract (fraction 3 and 4) from roots of Panax ginseng C.A. MEYER, increased activity of RNA polymerase (EC 2.7.7.6), assayed in vitro, of deoxycholate-lysed nuclei of rat liver. The maximum increase of the enzyme activity was found at 2 hr with a lag period of 30 min after treatment. The increase was still observed 8 hr after the injectio...
متن کاملStructural Alteration in Isolated Rat Liver Nuclei after Removal of Template Restriction by Polyanions
Specific polyanions release DNA template restrictions for DNA synthesis in isolated rat liver nuclei. The degree to which DNA synthesis is enhanced can be correlated with a spectrum of changes in nuclear structure Each polyanion which is effective in the release of template restriction produces a characteristic alteration in nuclear ultrastructure. Polyanions which have no effect on DNA synthes...
متن کاملPresence of multiple protein kinase activities in rat liver nuclei.
The phosphorylation of nuclear proteins has been suggested to play a role in the control of gene readout in mammalian tissues (1,2,3). Phosphorylation of histones has been shown to occur in rat liver in response to hormonal agents (4), and a histone phosphokinase has been isolated from calf liver (5). I.n addition, many of the non-histone (acidic) proteins of the nucleus are phosphoproteins. Th...
متن کاملTemplate-free, polymerase-free DNA polymerization.
A combination of a DNA ligase and a restriction endonuclease provides a DNA polymerase activity, which might suggest a novel strategy for polymer synthesis.
متن کاملEffects of Cortisone on Rat Liver Mitochondria
Experiments were designed to determine the effects of parenteral administration of cortisone on mitochondrial numbers of rat liver cells. Observations were made in three ways: (1) after osmic acid fixation and appropriate stain, (2) by phase microscopy on intact cells, (3) by actual enumeration of mitochondria and nuclei to provide data on mitochondria per cell. The results of the experiments i...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: FEBS Letters
سال: 1980
ISSN: 0014-5793
DOI: 10.1016/0014-5793(80)80367-x