Human polyomavirus JC virus genome.

AUTOR(ES)

Frisque, R J

RESUMO

The complete DNA sequence of the human JC virus, which was found to consist of 5,130 nucleotide pairs, is presented. The amino acid sequence of six proteins could be deduced: the early, nonstructural proteins, large T and small t antigens; the late capsid proteins, VP1, VP2, and VP3; and the agnogene product encoded within the late leader sequence, called the agnoprotein in simian virus 40. The extent of homology between JC virus DNA and the genomes of simian virus 40 (69%) and BK virus (75%) confirmed the close evolutionary relationship of these three polyomaviruses. The sequences showing the greatest divergence in these viral DNAs occurred within the tandem repeats located to the late side of the replication origins.

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