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Voynow SL, Coffin JM. Evolutionary variants of Rous sarcoma virus: large deletion mutants do not result from homologous recombination. J Virol. 1985;55(1):67-78doi: 10.1128/JVI.55.1.67-78.1985.
Voynow, S. L., & Coffin, J. M. (1985). Evolutionary variants of Rous sarcoma virus: large deletion mutants do not result from homologous recombination. Journal of virology, 55(1), 67-78. https://doi.org/10.1128/JVI.55.1.67-78.1985
Voynow, S L, and Coffin, J M. "Evolutionary variants of Rous sarcoma virus: large deletion mutants do not result from homologous recombination." Journal of virology vol. 55,1 (1985): 67-78. doi: https://doi.org/10.1128/JVI.55.1.67-78.1985
Voynow SL, Coffin JM. Evolutionary variants of Rous sarcoma virus: large deletion mutants do not result from homologous recombination. J Virol. 1985 Jul;55(1):67-78. doi: 10.1128/JVI.55.1.67-78.1985. PMID: 2989561; PMCID: PMC254899.
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J Virol. 1985 Jul;55(1):67-78. doi: 10.1128/JVI.55.1.67-78.1985.

Evolutionary variants of Rous sarcoma virus: large deletion mutants do not result from homologous recombination.

Journal of virology

S L Voynow, J M Coffin

PMID: 2989561 PMCID: PMC254899 DOI: 10.1128/JVI.55.1.67-78.1985
Free PMC Article

Abstract

Large deletion (LD) mutants of Prague strain Rous sarcoma virus, subgroup B (PrB), derived by serial undiluted passage through chicken (C/E) cells, were isolated and characterized. Individual LD viruses were initially isolated by cloning in soft agar of infected, chemically transformed quail (QT6) cells. Two regions of the PrB genome were deleted in the formation of the LD virus. This resulted in the junction of gag sequences in p12 to env sequences in gp37, and in the loss of the src gene. DNA restriction analysis of biologically active lambda Charon 27-LD recombinant clones indicated that individual LD viruses contained similar but not identical deletion endpoints. Two LD isolates, LD25 and LD85, were further subcloned into pBR322, and the deletion junctions were examined by DNA sequencing. Although the gag-env deletion endpoints were identical in the two subclones, heterogeneity was observed across the src deletion in that both mutants analyzed had the same 5' endpoint but slightly different 3' endpoints. In all cases, only a single homologous base (always an A residue) was found at the deletion endpoint. S1 nuclease analysis of the RNA from a number of QT6-LD clones gave similar results, indicating that the LD population was composed of viruses with similar but not identical deletion endpoints. Such viruses may have been generated from errors during reverse transcription of the virion RNA with subsequent selection assuring their dominance in the population.

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