the activity of a key enzyme in the formation of inositol tetrakisphosphates , inositol ( 1,4,5 ) -trisphosphate 3-kinase , was increased six- to eightfold in cytosolic extracts prepared from the v-src-transformed cells , suggesting that this enzyme may be one target for the pp60v-src kinase and that it may participate in the synthesis of novel , higher order inositol phosphates .
C1383501
cytosolic
C0007634
cells