Biogenesis of vaccinia: Isolation of conditional lethal mutants and electron microscopic characterization of their phenotypically expressed defects

Samuel Dales, Valadimir Milovanovitch, Beatriz G.T. Pogo, Susan B. Weintraub, Tellervo Huima, Sharon Wilton, Grant McFadden

Research output: Contribution to journalArticle

64 Scopus citations

Abstract

A four-stage selection scheme is described for collecting and identifying temperature-sensitive mutants of a syncytiogenic strain of IHD vaccinia. Among about 6000 plaque isolates tested 90 were judged to be experimentally useful because of their adequate thermosensitivity and low rate of reversibility. Seven among the useful mutants proved to be defective in DNA synthesis. Most of the acceptable mutants were examined electron miscroscopically to ascertain the defects in morphogenesis which they manifest when allowed to replicate at the restrictive temperature. The wide spectrum of defects which became evident, each characteristic of a particular mutant, was schematized into an ascending order of 17 categories according to the complexity in development reached at 40°. The defects associated with each category are exemplified in a series of electron micrographs and accompanying descriptions.

Original languageEnglish (US)
Pages (from-to)403-428
Number of pages26
JournalVirology
Volume84
Issue number2
DOIs
StatePublished - Feb 1978
Externally publishedYes

ASJC Scopus subject areas

  • Virology

Fingerprint Dive into the research topics of 'Biogenesis of vaccinia: Isolation of conditional lethal mutants and electron microscopic characterization of their phenotypically expressed defects'. Together they form a unique fingerprint.

Cite this