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Comparative Study
. 1979 Dec;32(3):1015-27.
doi: 10.1128/JVI.32.3.1015-1027.1979.

Comparative study of different isolates of murine sarcoma virus

D J Donoghue, P A Sharp, R A Weinberg
Comparative Study

Comparative study of different isolates of murine sarcoma virus

D J Donoghue et al. J Virol. 1979 Dec.

Abstract

The RNA genomes of a variety of murine sarcoma viruses (MSV) were compared by heteroduplex analysis. These viruses included the Moloney-derived isolates 124-MSV, m1-MSV, m3-MSV, HT1-MSV, and NP-MSV and also two independent isolates, Gazdar MSV and 1712-MSV. All of these viral genomes exhibited the acquired cellular sequences previously identified in 3124-MSV and thought to be responsible for transformation and sarcomagenesis. The location of the acquired cellular sequences within the envelope gene was variable in different MSV isolates, suggesting that the cellular sequences can be expressed in different positions relative to murine leukemia virus-derived information present in MSV. Deletions in the gag coding region of the different MSVs were consistent with their known gag-related gene products. Based on several features of the hetero-duplex analysis and the known genealogical relationships of the different MSVs, various possible mechanisms for the formation of MSV are considered.

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