The structural components of hog cholera virus.

Hog cholera virus grown in PK-15 cells and SK-cells was labeled with [35S]methionine and [3H]uridine. At least 3 polypeptides were resolved by polyacrylamide gel electrophoresis after disruption of the virus with sodium dodecyl-sulfate. The molecular weights of the structural proteins were determined to be 55000 (p55), 46000 (gp46), and 36000 (p36). The molecular weight of the viral RNA was determined to be about 4 X 10(6) in polyacrylamide-agarose-gel electrophoresis. In sucrose gradients the RNA has a S20,w value of 40-45S.