Close similarity between endogenous ecotropic virus of Mus musculus molossinus and AKR virus

Abstract
By using 7 different restriction endonucleases, the cleavage patterns of the unintegrated proviral DNA from an ecotropic murine leukemia virus isolated from M. musculus molossinus were identical to those of AKR virus. An AKR [3H]DNA probe can be completely saturated with M. musculus molossinus and M. musculus castaneus DNA, although the arrangement of viral sequences in M. musculus molossinus DNA differed from that of AKR virus. These studies indicate that an AKR-type ecotropic virus is present in some wild Asiatic mice.