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J Virol. 1979 January; 29(1): 153-160

Altered restriction endonuclease cleavage pattern of simian virus 40 DNA.

ABSTRACT

Three different groups of temperature-sensitive mutants of simian virus 40, isolated and characterized by Chou and Martin (J. Virol. 13:1101--1109, 1974), have been analyzed by using restriction endonucleases. Differences between the restriction endonuclease cleavage pattern of these mutants and that of the standard simian virus 40 strain have been mapped. These include the following observations: (i) tsD202 carries a defective HaeIII cleavage site at position 0.9 map units; (ii) tsB204 exhibits a defective HaIII site at position 0.21 and a defective HinIII site at 0.655 map units, and (iii) tsC219 carries a new HinIII site at position 0.15. We have isolated a few wild-type revertants from each of the temperature-sensitive mutant strains; each displays the endonuclease cleavage pattern of its parental temperature-sensitive strain.