using ion-exchange hplc on columns ( 150 x 21.5 mm ) protein pak deae-5pw and sp-5pw , six homogenous glycoproteins ( avidin , rf-gpw , ovalbumin , ovotransferrin , ovomucoid , and rf-gpy ) were isolated in preparative quantities ( 0.1-1 g ) .
C0017968
glycoproteins
C0004434
avidin