this protein was purified 140-fold by treatment of haemoglobin-free erythrocytes 'ghosts ' with edta ( ph 11.2 ) to remove extrinsic proteins , extraction of the protein-depleted membranes with n-octyl-glucoside and subsequent gradient-elution ion-exchange chromatography on deae-cellulose .
C0033684
proteins
C0025252
protein