Subcellular localization of proteins encoded by oncogenes of avian myeloblastosis virus and avian leukemia virus E26 and by the chicken c-myb gene
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TL;DR
Analysis of the subcellular location of the proteins encoded by the oncogenes of avian myeloblastosis virus and avian leukemia virus E26 and by the chicken c-myb gene shows that all three proteins are located in the nucleus.
Abstract
Analysis of the subcellular location of the proteins encoded by the oncogenes of avian myeloblastosis virus and avian leukemia virus E26 ( p45v -myb and p135gag -myb-ets, respectively) and by the chicken c-myb gene ( p75c -myb) shows that all three proteins are located in the nucleus. In AMV-infected (but not transformed) chicken fibroblasts p45v -myb also resides in the nucleus, indicating that a nuclear location of p45v -myb in these cells is not sufficient to achieve transformation. In AMV-transformed myeloblasts a small fraction of p45v -myb occupies an additional site in the perinuclear region of the cytoplasm. If the myeloblasts are caused to differentiate to macrophages, most of p45v -myb is found in the cytoplasm. This redistribution of p45v -myb within the cell may be responsible for reversion of the transformed phenotype.
