Interferon, double-stranded RNA, and protein phosphorylation
TLDR
The addition of double-stranded RNA to an extract from Ehrlich ascites tumor cells which have been treated with an interferon preparation promotes the phosphorylation by [gamma-32P]ATP of at least two proteins: P1 and P2.Abstract:
We reported earlier that the addition of double-stranded RNA and ATP increases the endonuclease activity more in an extract of Ehrlich ascites tumor cells which have been treated with an interferon preparation than in a comparable extract from control cells. We report here that the addition of double-stranded RNA to an extract from Ehrlich ascites tumor cells which have been treated with an interferon preparation [or with the interferon inducer poly(I)-poly(C)] promotes the phosphorylation by [gamma-32P]ATP of at least two proteins: P1 (molecular weight of 64,000) and P2 (molecular weight of 37,000). Double-stranded RNA also promotes the phosphorylation of at least one (i.e., P1) of these two proteins in an extract from cells which have not been treated with interferon, but the extent of phosphorylation is much smaller. Double-stranded RNA which has been degraded by RNase III, or DNA, does not promote the phosphorylation.read more
Citations
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The Glutathione Status of Cells
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Interactions between double-stranded RNA regulators and the protein kinase DAI.
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References
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