[Proteins of erythrocytic membrane. II. Solubilization of proteins in the membrane of human erythrocytes by chlorpromazine (author's transl)].

At the concentration above 2 mM, chlorpromazine induces partial solubilization of human erythrocytic membrane proteins. High molecular weight components such as spectrin are not extracted. Glycoproteins are preferentially released: at least five glycoprotein components are separated by acrylamide gel electrophoresis after specific staining. Other non identified proteins of the ghost external surface are also solubilized. At high concentration total solubilization of ghosts is obtained. Material extracted by chlorpromazine may be used for further protein purification.