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Mol Cell Biol. 1982 July; 2(7): 875-880

Association of the transforming proteins of Rous, Fujinami, and Y73 avian sarcoma viruses with the same two cellular proteins.

ABSTRACT

Two forms of the transforming proteins of Fujinami (pp140fps) and Yamaguchi 73 (pp94yes) sarcoma viruses were detected in lysates of chicken cells transformed by these viruses; the majority of pp140fps and pp94yes molecules were present as monomers; however, a small percentage of these proteins was associated in a complex with two cellular proteins of Mr 90,000 and 50,000. These cellular proteins were shown to be identical to those previously found to be complexed with the transforming protein of Rous sarcoma virus, pp60src. These results suggest a common role for the interaction of pp90 and pp50 with viral transforming proteins encoding tyrosyl-protein kinases.

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