title: Proteins of hepatitis B surface antigen: amino acid compositions of the major polypeptides.
abstract: The major polypeptides isolated from two different preparations of hepatitis B surface antigen/adw were analyzed for their amino acid compositions. The results indicated a high degree of compositional relatedness between the P-1 (23,000, molecular weight) and P-2 (29,500, molecular weight) polypeptides for each of the two preparations. A considerable proportion of the major P-1 and P-2 polypeptides may be composed of a common structure. No amino sugars were detected in the preparations of isolated polypeptides.
mesh_terms: D000596:Amino Acids / Q000032:analysis*; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D008970:Molecular Weight; D010455:Peptides / Q000032:analysis*
chemical_list: D000596:Amino Acids; D006514:Hepatitis B Surface Antigens; D010455:Peptides