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J Virol. 1983 October; 48(1): 31-39

Independent, spontaneous mutants of adenovirus type 2-simian virus 40 hybrid Ad2+ND3 that grow efficiently in monkey cells possess indentical mutations in the adenovirus type 2 DNA-binding protein gene.

ABSTRACT

Four independent, spontaneous mutants of the adenovirus type 2-simian virus 40 hybrid Ad2+ND3 that allow efficient growth in monkey cells were isolated previously (C. W. Anderson, Virology 111:263-269, 1981). All four mutations have been mapped within the coding sequence for the adenovirus DNA-binding protein by marker rescue analysis. DNA sequence analysis of a region of ca. 1,000 base pairs shown by marker rescue to contain the host range mutations demonstrated that the host range mutant hr602 differs from its parent, Ad2+ND3, at only a single nucleotide. Mutant hr602 has a thymine in place of a cytosine at the first position of the 130th codon, as measured from the initiation site for the DNA-binding protein. This change results in the replacement of a histidine by a tyrosine in mutant hr602 DNA-binding protein. Each of the other three Ad2+ND3 host range mutants have exactly the same nucleotide alteration as does hr602. This same nucleotide change was recently reported for a similarly derived host range mutant of adenovirus 5.

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