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Characterization of the US8.5 protein of herpes simplex virus

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Summary

In a previous study a novel gene designated as US8.5 was identified in the unique short component of the herpes simplex virus type 1 (HSV1) genome. Epitope tagging experiments suggested the existence of a protein encoded by this gene in HSV1 infected cells. To further analyze the US8.5 gene product and function, a rabbit polyclonal antiserum was raised against a recombinant β-galactosidase-US8.5 fusion protein expressed inE. coli. This antiserum reacted specifically with a 19 kDa protein in HSV1(F) infected cells as shown by immunoblotting and immunoprecipitation experiments. In addition, using the same antiserum a 21 kDa protein was detected in lysates from cells infected with HSV2(G), which was most likely the HSV2 homolog of US8.5. Kinetic studies indicated that US8.5 is expressed as γ1 gene. In addition, the US8.5 protein was immunoprecipitated with the anti-US8.5 serum from32P-labeled lysates of Vero cells infected with HSV1, demonstrating that the protein is phosphorylated. Immunofluorescence studies localized the US8.5 protein to the nucleoli of HSV1 infected cells.

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Georgopoulou, U., Kakkanas, A., Miriagou, V. et al. Characterization of the US8.5 protein of herpes simplex virus. Archives of Virology 140, 2227–2241 (1995). https://doi.org/10.1007/BF01323242

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  • DOI: https://doi.org/10.1007/BF01323242

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