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  • Title: Viral DNA synthesis in cells infected with temperature-sensitive mutants of herpes simplex virus type 1.
    Author: Bone DR, Brown M, Crombie I, Francke B.
    Journal: J Virol; 1978 Oct; 28(1):14-9. PubMed ID: 212598.
    Abstract:
    Temperature-sensitive mutants of herpes simplex virus type 1 representing eight DNA-negative complementation groups were grouped into the following three categories based on the viral DNA synthesis patterns after shift-up from the permissive to the nonpermissive temperature and after shift-down from the nonpermissive to the permissive temperature in the presence and absence of inhibitors of RNA and protein synthesis. (i) Viral DNA synthesis was inhibited after shift-up in cells infected with tsB, tsH, and tsJ. After shift-down, tsB- and tsH-infected cells synthesized viral DNA in the absence of de novo RNA and protein synthesis whereas tsJ-infected cells synthesized no viral DNA in the absence of protein synthesis. The B, H, and J proteins appear to be continuously required for the synthesis of viral DNA. (ii) Viral DNA synthesis continued after shift-up in cells infected with tsD and tsK whereas no viral DNA was synthesized after shift-down in the absence of RNA and protein synthesis. Mutants tsD and tsK appear to be defective in early regulatory functions. (iii) Cells infected with tsL, tsS, and tsU synthesized viral DNA after shift-up and after shift-down in the absence of RNA and protein synthesis. The functions of the L, S, and U proteins cannot yet be determined.
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