A RIBONUCLEIC ACID FRACTION FROM RAT LIVER WITH TEMPLATE ACTIVITY

Abstract
A RNA species with a nucleotide composition somewhat similar to that of DNA has been isolated from a crude rat liver nuclear preparation. This material is 100 times more effective than ribosomal RNA in stimulating the incorporation of leucine into protein by a cell-free preparation of E. coli. Its activity is not inhibited by the presence of a large excess of ribosomal RNA. RNA preparations from the cytoplasm show very little template activity.

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