the tryptic phosphopeptides of s6 obtained following treatment of the h35 cells with insulin and/or tpa were identical and were the same phosphopeptides as those observed previously following the phosphorylation in vitro of 40 s ribosomal subunits from reticulocytes with purified protease-activated kinase ii ( perisic , o. , and traugh , j. a . ( 1983 ) j. biol . chem . 258 , 13998-14002 ) .
C0031715
phosphorylation
C0031727
kinase