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Comparative Study
. 1981 Dec;40(3):963-70.
doi: 10.1128/JVI.40.3.963-970.1981.

Comparison of the restriction endonuclease maps of unintegrated proviral DNAs from four xenotropic murine leukemia viruses

D R Joseph
Comparative Study

Comparison of the restriction endonuclease maps of unintegrated proviral DNAs from four xenotropic murine leukemia viruses

D R Joseph. J Virol. 1981 Dec.

Abstract

From purified linear and superhelical DNAs, the restriction endonuclease maps of four xenotropic murine leukemia virus DNAs from NFS, NZB, BALB/c, and AKR mice were determined with ten restriction endonucleases. Each xenotropic proviral DNA was found to be a unique restriction endonuclease map, with differences in the gag, pol, env, and terminal repeated sequence regions. However, type-specific SacI and EcoRI sites in the env region were identical in all four xenotropic murine leukemia virus DNAs and were not found in ecotropic murine leukemia virus DNA. Comparison of the xenotropic murine leukemia virus DNA maps with maps of ecotropic murine leukemia virus DNA showed that the pol and terminal repeated sequence regions were highly conserved. Other similarities in ecotropic and some xenotropic viral DNAs suggest common origins.

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