Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1982 Dec;79(23):7147-51.
doi: 10.1073/pnas.79.23.7147.

Transformation and replication in mouse cells of a bovine papillomavirus--pML2 plasmid vector that can be rescued in bacteria

N Sarver, J C Byrne, P M Howley

Transformation and replication in mouse cells of a bovine papillomavirus--pML2 plasmid vector that can be rescued in bacteria

N Sarver et al. Proc Natl Acad Sci U S A. 1982 Dec.

Abstract

The unique ability of bovine papillomavirus (BPV-1) DNA to replicate as a stable, multicopy plasmid in transformed mouse cells has led to its utilization as a eukaryotic cloning vector. One limitation of the system has been the marked reduction in transformation efficiency when BPV-1 DNA or the subgenomic transforming segment of BPV-1 DNA (BPV69T) is covalently linked to pBR322 sequences. A dual host replicon consisting of BPV-1 DNA and pML2d, a deletion variant of pBR322, was constructed and shown to be highly efficient for transformation of mouse cells in vitro. The hybrid molecule replicates as a stable, unintegrated, multicopy plasmid in transformed mouse cells. The resident BPV-1-pML2d plasmid DNA was rescued in bacteria and the recovered plasmids were shown to be identical in structure and to have the same transformation efficiency as the original transforming DNA. In contrast, the transforming efficiency of BPV69T DNA is less than 1/100th that of BPV-1 DNA when the DNA is left covalently linked to pML2d. These observations indicate that, although the nontransforming region of BPV-1 (BPV31NT) DNA is not essential for transformation, it has a facilitative role in the transformation process.

PubMed Disclaimer

References

    1. Anal Biochem. 1981 Jun;114(1):193-7 - PubMed
    1. Virology. 1982 May;119(1):22-34 - PubMed
    1. Proc Natl Acad Sci U S A. 1982 Jul;79(13):4030-4 - PubMed
    1. Mol Cell Biol. 1981 Jun;1(6):486-96 - PubMed
    1. J Mol Biol. 1969 Feb 28;40(1):141-4 - PubMed

LinkOut - more resources