protein kinase activity ( atp : protein phosphotransferase , ec 2.7.1.37 ) has been found associated with the d2 hybrid protein , a highly purified protein of 107,000 daltons specified by the adenovirus-simian virus 40 ( sv40 ) hybrid ad2 ( + ) d2 , which has many properties associated with authentic sv40 t antigen [ tjian , r. & robbins , a . ( 1979 ) proc . natl . acad . sci . usa 76 , 610-614 ] .
C0042776
virus
C0003343
t antigen