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. 1980 Sep;35(3):824–835. doi: 10.1128/jvi.35.3.824-835.1980

Evidence for the Asiatic origin of endogenous AKR-type murine leukemia proviruses.

D L Steffen, S Bird, R A Weinberg
PMCID: PMC288876  PMID: 6252341

Abstract

A restriction endonuclease cleavage map of the genome of AKV, the endogenous, ecotropic leukemia virus of AKR mice, has been derived. By using this map and analyzing DNA from congenic mice, we have defined four DNA fragments diagnostic for AKV proviruses. Analysis of DNAs from 10 strains of American laboratory mice revealed that all strains carrying inducible, ecotropic murine leukemia viruses yielded DNAs which contained the four DNA fragments diagnostic for AKV. Virus-negative strains lacked these fragments in their DNA. Screening DNA from 23 additional mice revealed that, among these mice, only mice from Asia gave rise to the DNA fragments diagnostic of an AKV provirus. We conclude that all of the endogenous ecotropic murine leukemia proviruses in American laboratory mice are closely related since they share a common set of restriction endonuclease cleavage sites. These proviruses appear to derive from the East Asian ancestors of these mouse strains. Analysis of DNA from six selected mice with an additional restriction endonuclease showed that greater than 97% of the nucleotide sequences in each provirus are contigous and that these endogenous proviruses are indistinguishable from proviruses introduced by exogenous infection.

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

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