Crossref journal-article
American Society for Microbiology
Journal of Virology (235)
Abstract

ABSTRACT The UL56 gene product of herpes simplex virus (HSV) has been shown to play an important role in viral pathogenicity. However, the properties and functions of the UL56 protein are little understood. We raised rabbit polyclonal antisera specific for the UL56 protein of HSV type 2 (HSV-2) and examined its expression and properties. The gene product was identified as three polypeptides with apparent molecular masses ranging from 32 to 35 kDa in HSV-2-infected cells, and at least one species was phosphorylated. Studies of their origins showed that the UL56 protein of HSV-2 is also translated from the upstream in-frame methionine codon that is not present in the HSV-1 genome. Synthesis was first detected at 6 h postinfection and was not abolished by the viral DNA synthesis inhibitor phosphonoacetic acid. Indirect immunofluorescence studies revealed that the UL56 protein localized to both the Golgi apparatus and cytoplasmic vesicles in HSV-2-infected and single UL56-expressing cells. Deletion mutant analysis showed that the C-terminal hydrophobic region of the protein was required for association with the cytoplasmic membrane and that the N-terminal proline-rich region was important for its translocation to the Golgi apparatus and cytoplasmic vesicles. Moreover, the results of protease digestion assays and sucrose gradient fractionation strongly suggested that UL56 is a tail-anchored type II membrane protein associated with lipid rafts. We thus hypothesized that the UL56 protein, as a tail-anchored type II membrane protein, may be involved in vesicular trafficking in HSV-2-infected cells.

Bibliography

Koshizuka, T., Goshima, F., Takakuwa, H., Nozawa, N., Daikoku, T., Koiwai, O., & Nishiyama, Y. (2002). Identification and Characterization of the UL56 Gene Product of Herpes Simplex Virus Type 2. Journal of Virology, 76(13), 6718–6728.

Authors 7
  1. Tetsuo Koshizuka (first)
  2. Fumi Goshima (additional)
  3. Hiroki Takakuwa (additional)
  4. Naoki Nozawa (additional)
  5. Tohru Daikoku (additional)
  6. Osamu Koiwai (additional)
  7. Yukihiro Nishiyama (additional)
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Dates
Type When
Created 23 years ago (July 27, 2002, 6:09 a.m.)
Deposited 3 years, 5 months ago (March 5, 2022, 1:58 a.m.)
Indexed 2 weeks, 1 day ago (Aug. 6, 2025, 8:53 a.m.)
Issued 23 years, 1 month ago (July 1, 2002)
Published 23 years, 1 month ago (July 1, 2002)
Published Print 23 years, 1 month ago (July 1, 2002)
Funders 0

None

@article{Koshizuka_2002, title={Identification and Characterization of the UL56 Gene Product of Herpes Simplex Virus Type 2}, volume={76}, ISSN={1098-5514}, url={http://dx.doi.org/10.1128/jvi.76.13.6718-6728.2002}, DOI={10.1128/jvi.76.13.6718-6728.2002}, number={13}, journal={Journal of Virology}, publisher={American Society for Microbiology}, author={Koshizuka, Tetsuo and Goshima, Fumi and Takakuwa, Hiroki and Nozawa, Naoki and Daikoku, Tohru and Koiwai, Osamu and Nishiyama, Yukihiro}, year={2002}, month=jul, pages={6718–6728} }