title: A putative non-hr origin of DNA replication in the HindIII-K fragment of Autographa californica multiple nucleocapsid nuclear polyhedrosis virus.
abstract: In addition to the seven known homologous regions (hrs) of Autographa californica multiple nucleocapsid polyhedrosis virus (AcMNPV) the HindIII-K fragment was also found to carry a putative ori, although this fragment does not contain an hr. Deletion analysis showed that this ori contains several segments essential for its activity and other 'auxiliary' sequences that enhance the ori activity. Sequence analysis identified several structures often found in other viral replication oris, such as palindromes and other repeated motifs. Although most of the auxiliary sequences of this ori were found to be deleted in the Bombyx mori nucleocapsid polyhedrosis virus genome, the essential part of this ori, containing the palindromes and the A/T-rich region, was retained. This and the fact that after prolonged serial passage of AcMNPV large replicating DNA molecules are found in which repeated sequences derived from the HindIII-K fragment accumulate are consistent with this region being a putative origin of AcMNPV DNA replication.
authors.affiliation: Department of Virology, Wageningen Agricultural University, The Netherlands.
authors.forename: M
authors.initials: M
authors.lastname: Kool
authors.forename: R W
authors.initials: RW
authors.lastname: Goldbach
authors.forename: J M
authors.initials: JM
authors.lastname: Vlak
mesh_terms: D000818:Animals; D001483:Base Sequence; D002460:Cell Line; D004261:DNA Replication / Q000235:genetics*; D016679:Genome, Viral; D008969:Molecular Sequence Data; D017924:Nucleopolyhedroviruses / Q000235:genetics*; D012091:Repetitive Sequences, Nucleic Acid / Q000235:genetics; D018741:Replication Origin / Q000235:genetics*; D015183:Restriction Mapping; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA; D017384:Sequence Deletion / Q000502:physiology; D012692:Serial Passage; D018411:Spodoptera; D014779:Virus Replication / Q000235:genetics*