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. 1990 Aug;87(16):6019–6023. doi: 10.1073/pnas.87.16.6019

Broad spectrum of in vivo forward mutations, hypermutations, and mutational hotspots in a retroviral shuttle vector after a single replication cycle: substitutions, frameshifts, and hypermutations.

V K Pathak 1, H M Temin 1
PMCID: PMC54463  PMID: 2201018

Abstract

We determined the in vivo forward mutation rate in a single replication cycle for spleen necrosis virus (SNV). A method was developed to clone integrated proviruses of retroviral shuttle vectors by exploiting the tight binding of the lac operator to the lac repressor protein. The vectors contained the lacZ alpha gene as a reporter of mutations. Thirty-seven of the 16,867 proviruses recovered contained five classes of mutations, including substitutions and frameshifts. Runs of 9 and 10 identical base pairs and a direct repeat of 110 base pairs were mutational hotspots. In addition, two copies of a provirus contained 15 G-to-A substitutions. Such proviruses, which we name hypermutants, may arise through the action of an error-prone polymerase and could significantly contribute to the genetic variation in retroviral populations.

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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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