Endobrevin is enriched in the asialoglycoprotein receptor subunits R1- and R2/3-containing membrane fractions. Cytosol (C), total membrane (TM), microsome-enriched membrane fraction (M), G1 membrane fraction, and G2 membrane fraction (100 μg each) were used in a Western blot analysis using (A) endobrevin antibodies, (B) polyclonal antibodies against asialoglycoprotein receptor subunit R1, and (C) antibodies against the asialoglycoprotein receptor subunits R2/3.