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. 1972 Dec;10(6):1136–1142. doi: 10.1128/jvi.10.6.1136-1142.1972

Ribonuclease H: a Ubiquitous Activity in Virions of Ribonucleic Acid Tumor Viruses

Duane P Grandgenett 1, Gary F Gerard 1, Maurice Green 1
PMCID: PMC356594  PMID: 4118867

Abstract

Ten ribonucleic acid (RNA) tumor viruses grown in five different host cell species and three non-oncogenic viruses from three different virus groups have been examined for ribonuclease H content. Three different substrates were used to assay ribonuclease H: calf thymus [3H]RNA-deoxyribonucleic acid (DNA) hybrid prepared with denatured calf thymus DNA and Escherichia coli DNA-directed RNA polymerase, 3H-polydenylic acid [3H-poly(A)] complexed to polydeoxythymidylic acid [poly(dT)], and 3H-polyuridylic acid [3H-poly(U)] complexed to polydeoxyadenylic acid [poly(dA)]. All ten RNA tumor viruses contained ribonuclease H activity which degraded the RNA of both the calf thymus hybrid and poly(A)-poly(dT), whereas only the ribonuclease H in the Moloney strain of murine sarcoma-leukemia virus and in RD-feline leukemia virus hydrolyzed the RNA strand of poly(U)-poly(dA). No appreciable ribonuclease H activity was detected in influenza, Sendai, or vesicular stomatitis virus. The ribonuclease H and RNA-directed DNA polymerase activities in Moloney murine sarcoma-leukemia virus were inseparable by phosphocellulose chromatography or glycerol gradient centrifugation, but appeared to be partially separated by diethylaminoethyl-cellulose chromatography.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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