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. 1975 Dec;72(12):4910-3.
doi: 10.1073/pnas.72.12.4910.

Infectious viral DNA of murine leukemia virus

D Smotkin, A M Gianni, S Rozenblatt, R A Weinberg

Infectious viral DNA of murine leukemia virus

D Smotkin et al. Proc Natl Acad Sci U S A. 1975 Dec.

Abstract

A fraction of the unintegrated viral DNA that appears early after infection of mouse cells by Moloney leukemia virus is infectious. The infectivity could be deomonstrated by an XC plaque assay of the cells exposed to DNA co-precipitated with calcium phosphate. The number of plaques deriving from closed-circular, supercoiled DNA was proportional to the concentration of added DNA, indicating that a single DNA molecule of about 5.5 X 10(6) daltons carries all the viral information. Nonsupercoiled viral DNA is also infectious; these molecules appear to be largely double-stranded and 5 to 6 X 10(6) dalthons in mass.

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References

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