title: Iodination of hepatitis A virus reveals a fourth structural polypeptide.
abstract: Hepatitis A virus present in the feces of two patients with naturally acquired hepatitis A was purified, radiolabeled with 125I, and analyzed by discontinuous sodium dodecyl sulfate-polyacrylamide gel electrophoresis. In addition to the three structural polypeptides previously reported, a fourth polypeptide with a molecular weight of 14,000 was detected and shown to be a component of hepatitis A virus by immune precipitation techniques. Intact virions were also shown to sediment at 160S on sucrose gradients. These findings are consistent with hepatitis A virus being an enterovirus within the family Picornaviridae.
mesh_terms: D002499:Centrifugation, Density Gradient; D004591:Electrophoresis, Polyacrylamide Gel; D006507:Hepatovirus / Q000032:analysis*; D006801:Humans; D007457:Iodine Radioisotopes; D007467:Iodoproteins / Q000032:analysis; D008970:Molecular Weight; D014764:Viral Proteins / Q000032:analysis* / Q000276:immunology
chemical_list: D007457:Iodine Radioisotopes; D007467:Iodoproteins; D014764:Viral Proteins