planar cell and membrane-splitting methods revealed that neither integral nor peripheral phosphorylated polypeptides were cleaved by freeze fracture , that all phosphorylated peripheral proteins partitioned intact with the cytoplasmic side of the membrane , and that the percentages of [ 32p ] pi-labeled peripheral proteins were the same in split membrane cytoplasmic leaflets as in intact membranes .
C0007634
cell
C0007603
membrane cytoplasmic