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. 1982 Nov;44(2):731–735. doi: 10.1128/jvi.44.2.731-735.1982

Rauscher murine leukemia virus: molecular cloning of infectious integrated proviral DNA.

A Habara, E P Reddy, S A Aaronson
PMCID: PMC256321  PMID: 6292529

Abstract

The integrated proviral genome of Rauscher murine leukemia virus was molecularly cloned in a bacteriophage Charon 4A vector after the proviral sequences were enriched by sequential RPC-5 column chromatography and sucrose gradient centrifugation. A recombinant DNA clone, lambda-RV-1, possessing a 12-kilobase-pair EcoRI insert, was shown to contain the entire 8.8-kilobase-pair leukemia virus genome flanked by rat cellular sequences at the 5' and 3' ends. This DNA fragment was biologically active, inducing the release of virion-associated reverse transcriptase activity with as little as 10 ng of DNA insert. The virus induced XC plaque formation at high titers on NIH/3T3 and BALB/3T3 cells and demonstrated identity with the parental virus in radioimmunoassays for the highly type-specific gag gene-coded p12 protein. The molecularly cloned Rauscher murine leukemia virus should be useful in studying the molecular mechanisms involved in the transformation of specific lymphoid target cells by chronic mouse leukemia viruses.

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Selected References

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