title: Ultrastructural and chemical analysis of the outer membrane leaflet of the human red blood cell.
abstract: Structural and biochemical analysis of the outer membrane leaflet of human erythrocytes freeze-fractured on positively charged supports showed that glycophorin A is its major constituent. Two classes of intramembrane particles can be discriminated on the external fracture face: those which are high but small in diameter and those which are low and large or elongated. The presence of small amount of band 3 protein in the outer membrane leaflet cannot be ruled out; it could be contained in the class of 'high' intramembrane particles on the external fracture face.
mesh_terms: D004591:Electrophoresis, Polyacrylamide Gel; D004910:Erythrocyte Membrane / Q000648:ultrastructure*; D005614:Freeze Fracturing; D006801:Humans; D008565:Membrane Proteins / Q000097:blood; D008854:Microscopy, Electron; D012795:Sialoglycoproteins / Q000097:blood
chemical_list: D008565:Membrane Proteins; D012795:Sialoglycoproteins