Studies on the budding process of a temperature-sensitive mutant of murine leukemia virus with a scanning electron microscope.
AUTOR(ES)
Wong, P K
RESUMO
The scanning electron microscope was used to study the budding process of the wild-type Moloney murine leukemia virus and one of its temperature-sensitive mutants, designated ts 3. A considerably larger number of budding particles was observed on TB cells infected with ts 3 at the nonpermissive temperature (39 C) than at the permissive temperature (34 C). No apparent difference was noted between the number of particles on ts 3-infected cells at (34 C) and wild-type-infected cells at 34 or 39 C. Virions were detected at the cell membrane of ts 3-infected cells at 39 C as early as 8 h postinfection. Virion density increased progressively up to 48 h after which no increase was observed. An average of 1,600 virus particles was observed at the cell surface at the peak of virus production. The distribution of these on the cell membrane appeared to be random. The maximum proportion of the cell surface occupied by the viral particles did not exceed 10%. After temperature shift from 39 to 34 C, approximately 90% of the particles had dissociated from the cell membrane within 1 h.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=354681Documentos Relacionados
- Electron microscope studies of temperature-sensitive mutants of herpes simplex virus type 2.
- Electron Microscopic Characterization of the Defectiveness of a Temperature-Sensitive Mutant of Moloney Murine Leukemia Virus Restricted in Assembly
- Protease bypass of temperature-sensitive murine leukemia virus maturation mutants.
- Preliminary characterization of a temperature-sensitive mutant of Moloney murine leukemia virus that produces particles at the restrictive temperature.
- Reexamination of the Morphogenetic Block of a Putative Late-Stage, Temperature-Sensitive Mutant of Moloney Murine Leukemia Virus
