title: Morphogenesis of poliovirus. IV. existence of particles sedimenting at 150S and having the properties of provirion.
abstract: An apparent precursor to the poliovirion that cosediments with the virion at 150S was identified by its content of VP-0. It has properties previously associated with the provirion, a structure that sedimented at 125S, and it may be an alternate form of provirion. Like virions, the 150S precursor binds to and elutes from cells, after which it sediments at about 125S.
mesh_terms: D006367:HeLa Cells; D009024:Morphogenesis; D017955:Poliovirus / Q000032:analysis* / Q000254:growth & development; D011498:Protein Precursors / Q000032:analysis*; D014764:Viral Proteins / Q000032:analysis*
chemical_list: D011498:Protein Precursors; D014764:Viral Proteins