Detection of the v-abl gene product at cell-substratum contact sites in Abelson murine leukemia virus-transformed fibroblasts.

Monoclonal antibodies to the p15 and p12 gag proteins were used to detect the P120gag-abl transforming protein of Abelson murine leukemia virus in nonproductively transformed normal rat kidney fibroblast cells. The results demonstrate that, in addition to the prominent plasma membrane location, P120gag-abl was associated with points of adhesion between the cell and the substratum. The localization of P120gag-abl was qualitatively similar to that reported for pp60src in the same normal rat kidney fibroblast cells and suggests that these transforming proteins may share some common transformation features.