Physical map of SeMNPV baculovirus DNA: an AcMNPV genomic variant.

A physical map of the plaque-purified SeMNPV-25 baculovirus DNA was constructed with HindIII, EcoRI, PstI, SstII, BstEII, BamHI, KpnI, and SmaI by multiple-enzyme digestion and DNA-DNA hybridization. The orientation of the physical map was to the AcMNPV polyhedrin gene, and a total of 104 restriction sites were ordered. The genome size was 131.89 kilobase pairs (87.05 X 10(6) Da). The physical maps of SeMNPV-25 DNA and AcMNPV-E2 DNA were compared, and they were similar except in four regions. Since the differences between the physical maps of SeMNPV-25 and AcMNPV-E2 were reconciled, the BstEII and SstII fragments for AcMNPV-E2 were also ordered. In addition, reiterated sequences in the SeMNPV-25 genome were identified and located on the physical map.