Comparison of the virion polypeptides of group B arboviruses.

The virion polypeptides of eight group B arboviruses were compared by polyacrylamide gel coelectrophoresis. All contained three polypeptides, V-1, V-2, and V-3. The mosquito-borne viruses had electrophoretically similar small membrane polypeptides (V-1); the tick-borne viruses had a V-1 of significantly decreased mobility.