Streptomycin-resistant Escherichia coli mutant temperature sensitive for the production of Qbeta-infective particles.
AUTOR(ES)
Engelberg-Kulka, H
RESUMO
A streptomycin-resistant Escherichia coli mutant has been isolated that is temperature sensitive for Qbeta phage, but not for the group I RNA phages f2, MS2, and R17. The growth of Qbeta in the mutant at the nonpermissive temperature (42 degrees C) results in the release of a near-normal burst of noninfectious particles that cosediment with Qbeta in a sucrose gradient. It is assumed that the mutant is defective at elevated temperatures in the suppression of nonsense codons, thereby producing Qbeta-like particles which are noninfectious because of the lack of the read-through protein A1.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=353784Documentos Relacionados
- Q beta-defective particles produced in a streptomycin-resistant Escherichia coli mutant.
- Transcription and translation in a pleiotropic streptomycin-resistant mutant of Escherichia coli.
- INCREASED PANTOTHENATE-SYNTHESIZING ENZYME IN STREPTOMYCIN-RESISTANT ESCHERICHIA COLI
- Genetic analysis of a streptomycin-resistant oligosporogenous Bacillus subtilis mutant.
- Streptomycin-Resistant Gonorrhoea in the Female
