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The cell proteins expressed in rat embryo cells transformed by herpes simplex virus (HSV) have been analysed by immunoprecipitation assays to determine those polypeptides which can be identified by immunoprecipitation with the sera of tumour-bearing animals and also with antisera to herpes simplex infected cells. Cell polypeptides commonly recognised by both these sera have been further characterised using a monoclonal antibody directed against a cellular polypeptide which accumulates on HSV-2 lytic infection. This monoclonal antibody recognises in HSV-transformed cells polypeptides of mol. wts. 90 000, 40 000 and 32 000. Further studies show that the accumulation of these polypeptides in HSV-transformed cells is not HSV specific but is a common feature of transformation or of cells which have been immortalised. We suggest that cellular polypeptides accumulating as a result of HSV infection may be of importance in the initiation of transformation by HSV, i.e., at the level of immortalisation of cells.


Journal article


The EMBO journal

Publication Date





3223 - 3228