Abstract
A soluble endoribonuclease activity was extracted from purified vaccinia virus cores by treatment with sodium-deoxycholate and dithiothreitol. The soluble enzyme readily cleaved purified virion-associated high-molecular-weight RNA to limit-sized fragments sedimenting at 8 to 12S. Purified virion-released 8 to 12S polyadenylated mRNA was not degraded by the enzyme extract. The soluble endoribonuclease did not require the presence of ribonucleoside triphosphates for activity.
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Selected References
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