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  • Title: mRNA- and DNA-directed synthesis of herpes simplex virus-coded exonuclease in Xenopus laevis oocytes.
    Author: Preston CM, Cordingley MG.
    Journal: J Virol; 1982 Aug; 43(2):386-94. PubMed ID: 6287023.
    Abstract:
    Microinjection of herpes simplex virus (HSV)-infected cell mRNA into Xenopus laevis oocytes resulted in the production of a new exonuclease activity. This enzyme strongly resembled the HSV alkaline exonuclease in many biochemical properties, and hybrid-arrested translation studies showed that it was virus coded, mapping at 0.080 to 0.185 genome map units. Exonuclease mRNA had a size and genome location equivalent to the mRNA encoding V185 in reticulocyte lysates, suggesting that V185 is the exonuclease. The enzyme synthesized in oocytes was found to act as an exonuclease in vivo. Two plasmids containing HSV DNA fragments directed the synthesis of exonuclease when microinjected into oocyte nuclei, and this finding enabled the coding and control sequences for this gene to be localized to 0.155 to 0.185 genome map units.
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