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. 1982 Mar;41(3):919–930. doi: 10.1128/jvi.41.3.919-930.1982

Participation of subgenomic retroviral mRNAs in recombination.

L H Wang, D W Stacey
PMCID: PMC256828  PMID: 6178841

Abstract

Envelope glycoprotein (env) mRNA from avian retroviruses was injected into cells transformed by env-deleted Bryan Rous sarcoma virus [RSV(-)]. The genetic deficiency of RSV(-) was complemented, and infectious transforming virus was released for many days after these injections. The long-term activity of the injected env mRNA is believed to be due to reverse transcription of the injected RNA after its incorporation into virus particles. The resulting subgenomic provirus, presumed to be integrated into host DNA, is able to direct the continuous synthesis of additional env mRNA. In some of these cultures, replication-competent viruses appeared many days after injection. The analysis by RNase T1 oligonucleotide fingerprinting showed that the RNA of these virus genomes contained oligonucleotides characteristic of both RSV(-) and the env mRNA injected. In all viruses analyzed the 5' two-thirds and the 3' terminus of the genome were derived from RSV(-) and the env gene from the injected mRNA. Our results thus strongly indicate that these viruses were generated via recombination between RSV(-) and env mRNA. The demonstration of involvement of an mRNA sequence in recombination may be of importance in the divergence of retroviruses and in the mechanism of interaction between retroviruses and host nucleotide sequences.

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Selected References

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

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