New Low Molecular Weight Glycopeptide containing Triglucosylcysteine in Human Erythrocyte Membrane

ALTHOUGH protein composition of the erythrocyte membrane has been studied extensively¹, little if anything is known about membrane peptides. Among a variety of chemical agents used for the solubilization of the membrane, solutions of greater than 0.8 M NaCl have been shown to dissolve 50% of membrane proteins^2,3. As we were interested in the composition of the outer surface of the membrane, we have investigated whether lower concentrations of NaCl, which would not cause haemolysis of intact cells, would solubilize certain membrane components.