The analysis of polypeptides in the nuclei and cytoplasm of cells infected with murine herpesvirus 72.

Twenty-six polypeptides in murine herpesvirus isolate 72 (MHV-72) were identified and the synthesis and accumulation of 21 virus-specific polypeptides in Vero cells during the course of productive infection with MHV-72 were examined. Five of the infected cell polypeptides accumulated within the nuclei and nine accumulated within the cytoplasm of MHV-72-infected cells. Seven polypeptides were identified within the nuclei and cytoplasm in equivalent amounts. The major capsid protein was shown to have an M(r) of 161K. Thirteen virus-specific polypeptides were solubilized with Nonidet P-40 or radioimmunoprecipitation assay buffer and immunoprecipitated with rabbit and mouse immune sera. Analysis of the polypeptides of MHV-72 indicate a closer resemblance between MHV-72 and the gammaherpesviruses herpesvirus saimiri and Epstein-Barr virus than with the alphaherpesvirus herpes simplex virus type 1.