Nucleocapsid mass and capsomer protein stoichiometry in equine herpesvirus 1: scanning transmission electron microscopic study.
AUTOR(ES)
Newcomb, W W
RESUMO
The Brookhaven scanning transmission electron microscope was employed to measure the masses of two nucleocapsid species (of light and intermediate densities) of equine herpesvirus 1. These were found to be 196.7 +/- 9.2 and 229.0 +/- 9.5 megadaltons (MDa), respectively. Biochemical assays showed that neither nucleocapsid contained any significant amount of DNA (less than 0.2% [wt/wt]). Taking into account data on protein composition, we conclude that the difference between their masses is essentially contributed by viral protein 22 (46 kDa), which is an integral component of the maturable intermediate nucleocapsid but not of the abortive light nucleocapsid. In view of earlier ultrastructural information on capsomer symmetry, our mass determinations are consistent only with the 150 hexavalent capsomers being hexamers of the 148-kDa major capsid protein.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=250970Documentos Relacionados
- Electron microscopic study of equine herpesvirus type 1 DNA.
- The ventricular surface of the subcommissural organ: a scanning and transmission electron microscopic study.
- Murine macrophage-lymphocyte interactions: scanning electron microscopic study.
- Human fetal iridocorneal angle: a light and scanning electron microscopic study.
- Reissner's fibre in the rat: a scanning and transmission electron microscope study.
