Abstract
The DNA of human papillomavirus (HPV) obtained from a pool of plantar warts is cleaved by bacillus amyloliquefaciens (BamI) and Haemophilus parainfluenzae (HpaII) restriction endonucleases at one and four specific sites, respectively. These sites were localized on the previously established cleavage map of HPV DNA, using the Hind, HindIII, HpaI, and EcoRI endonuclease restriction sites as reference. The four HpaII sites were mapped, clockwise, at 1.4, 41.1, 44.3, and 52.8% of the genome length from the unique BamI cleavage site taken as point zero. The HpaII site mapped at 1.4% of the genome length was absent in 40 to 50% of the molecules, thus showing a genetic heterogeneity of HPV DNA.
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