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J Virol. 1978 October; 28(1): 337-343

Characterization of K virus and its comparison with polyoma virus.

S B Bond, P M Howley and K K Takemoto

ABSTRACT

The antigenic relationship between the two murine papovaviruses, K virus and polyoma virus, was examined by serological techniques to determine whether they shared any antigenic components. No cross-reactivity was found associated with the viral (V) antigens by the indirect immunofluorescence, neutralization, or hemagglutination-inhibition tests. The tumor (T) antigens expressed in transformed cells or cells productively infected by either K or polyoma virus did not cross-react by indirect immunofluorescence. An antigenic relationship was detected, however, among the late proteins of K virus, polyoma virus, simian virus 40, and the human papovavirus BKV, when tested with either hyperimmune sera prepared against polyoma virus and simian virus 40 or sera prepared against disrupted virions. The nucleic acids of K and polyoma viruses were compared by agarose gel electrophoresis and restriction endonuclease analysis. No nucleotide sequence homology between the genomes of these two viruses was detectable by DNA-DNA hybridization techniques under stringent conditions. The genome of K virus was found to be slightly smaller than that of polyoma virus, and the cleavage patterns of the viral DNAs with six restriction endonucleases were different. These findings indicate that there is little relationship between these two murine papovaviruses.

J Virol. 1978 October; 28(1): 337-343




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