Work

Homologous and Nonhomologous Recombination in Monkey Cells

Year: 1983

Type: article

Abstract: Though recombinational events are important for the proper functioning of most cells, little is known about the frequency and mechanisms of recombination in mammalian cells. We have used simian virus 40 (SV40)-pBR322 hybrid plasmids constructed in vitro as substrates to detect and quantitate intramolecular homologous and nonhomologous recombination events in cultured monkey cells. Excision of wild-type or defective SV40 DNAs by recombination from these plasmids was scored by the viral plaque assay, in either the absence or the presence of DNA from a temperature-sensitive helper virus. Several independent products of homologous and nonhomologous recombination have been isolated and characterized at the DNA sequence level. We find that neither DNA replication of the recombination substrate nor SV40 large T antigen is essential for either homologous or nonhomologous recombination involving viral or pBR322 sequences.

Source: Molecular and Cellular Biology

DOI: 10.1128/mcb.3.6.1040

Authors: S Subramani, P Berg

Institutions: University of California San Diego, Stanford Medicine

Language: English

Topic: DNA Repair Mechanisms

Subfield: Molecular Biology

Field: Biochemistry, Genetics and Molecular Biology

Domain: Life Sciences

Open Access status: green

Funders: National Institutes of Health, National Institute on Aging, National Institute of General Medical Sciences

Award: DNA TRANSACTIONS AND GENOME INTEGRITY IN AGING