localization of this component to the cell surface can be made on the basis of inhibition of phosphorylation by addition of a protein derived from the rat brain with protein kinase inhibitory property , susceptibility of the phosphorylated protein to tryptic digestion , whereas the unphosphorylated protein is unaffected by digestion with trypsin ( 15 min ) , inhibition of phosphorylation of this protein after brief exposure to melittin , and the consistent observation that more label is associated with the 42,000 mr band in homogenates and permeabilized cells than in comparable numbers of intact cells exposed to the same amount of label .
C0699040
cell
C0007634
cells