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  • Title: Comparison of the p26 gene region of two baculoviruses.
    Author: Bicknell JN, Leisy DJ, Rohrmann GF, Beaudreau GS.
    Journal: Virology; 1987 Dec; 161(2):589-92. PubMed ID: 3686831.
    Abstract:
    A 1.1-kb region of DNA containing the p26 gene of the multicapsid nuclear polyhedrosis virus of Orgyia pseudotsugata (OpMNPV) was sequenced, transcriptionally mapped, and compared to the same region in the MNPV of Autographa californica (AcMNPV). The mRNA start site of the p26 gene occurs about 22 nucleotides downstream from an A/T-rich putative promoter sequence that is highly conserved between AcMNPV and OpMNPV. The p26 mRNA is transcribed through the p26 gene and coterminates with the p10 gene resulting in a mRNA containing copies of both genes. The reading frames of the OpMNPV and AcMNPV p26 genes showed 47% amino acid sequence homology which is clustered in six regions with over 65% amino acid homology. There was a distinct bias toward incorporation of G/C-rich codons in the OpMNPV p26 gene. No DNA homology was observed between the region upstream of the p26 gene in AcMNPV and OpMNPV. In AcMNPV, this region contains the homologous repeated (hr) sequence hr5. Hybridization of a plasmid containing an AcMNPV-repeated sequence (hr5) to Southern blots of the OpMNPV genome indicated that this repeated sequence is lacking in OpMNPV.
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