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  • Title: The pattern of integration of viral DNA sequences in the adenovirus 5-transformed human cell line 293.
    Author: Spector DJ.
    Journal: Virology; 1983 Oct 30; 130(2):533-8. PubMed ID: 6316644.
    Abstract:
    The pattern of integrated adenovirus 5 DNA in the adenovirus 5-transformed human cell line 293 was analyzed by DNA blot hybridization. In contrast to a previous report, only sequences from the left end of the genome were detected. The viral DNA was contained in a unique DNA fragment generated by cleavage of 293 DNA with either EcoRI or BamHI, two enzymes which do not cut the integrated viral DNA. Further mapping studies indicated that the integrated sequence was probably colinear with viral DNA. The joining to host cell sequences occurred between viral nucleotide base pairs 1 and 270 (a site for BalI) on one end and 4123 (SmaI site) and 5372 (BalI site) at the other end. The viral DNA was not tandemly repeated. These results suggest that integration of viral sequences into the host genome probably occurred at a single site. If any subsequent duplications of viral DNA took place, then duplication of extensive cellular sequences also must have occurred.
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