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- W2169183716 abstract "Glycoprotein D (gD) is an envelope component of herpes simplex virus essential for virus penetration. gD contains three sites for addition of asparagine-linked carbohydrates (N-CHO), all of which are utilized. Previously, we characterized mutant forms of herpes simplex virus type 1 gD (gD-1) lacking one or all three N-CHO addition sites. All of the mutants complemented the infectivity of a gD-minus virus, F-gD beta, to the same extent as wild-type gD. Here, we show that recombinant viruses containing mutations in the gD-1 gene which eliminate the three N-CHO signals are viable. Two such viruses, called F-gD(QAA)-1 and F-gD(QAA)-2, were independently isolated, and the three mutations in the gD gene in one of these viruses were verified by DNA sequencing. We also verified that the gD produced in cells infected by these viruses is devoid of N-CHO. Plaques formed by both mutants developed more slowly than those of the wild-type control virus, F-gD(WT), and were approximately one-half the size of the wild-type. One mutant, F-gD(QAA)-2, was selected for further study. The QAA mutant and wild-type gD proteins extracted from infected cells differed in structure, as determined by the binding of monoclonal antibodies to discontinuous epitopes. However, flow cytometry analysis showed that the amount and structure of gD found on infected cell surfaces was unaffected by the presence or absence of N-CHO. Other properties of F-gD(QAA)-2 were quite similar to those of F-gD(WT). These included (i) the kinetics of virus production as well as the intracellular and extracellular virus titers; (ii) the rate of virus entry into uninfected cells; (iii) the levels of gB, gC, gE, gH, and gI expressed by infected cells; and (iv) the turnover time of gD. Thus, the absence of N-CHO from gD-1 has some effect on its structure but very little effect on its function in virus infection in cell culture." @default.
- W2169183716 created "2016-06-24" @default.
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- W2169183716 date "1991-08-01" @default.
- W2169183716 modified "2023-10-10" @default.
- W2169183716 title "Characterization of a recombinant herpes simplex virus which expresses a glycoprotein D lacking asparagine-linked oligosaccharides" @default.
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- W2169183716 doi "https://doi.org/10.1128/jvi.65.8.4432-4441.1991" @default.
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