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Efficient suppression of the requirement for N function of bacteriophage λ by a rho-defective E. coli suA mutant

✍ Scribed by Belfort, Marlene ;Oppenheim, Amos B.

Publisher: Springer
Year: 1976
Tongue: English
Weight: 302 KB
Volume: 148
Category: Article
ISSN: 0026-8925
DOI: 10.1007/bf00268382

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✦ Synopsis

The E. coli suA mutant (T82), which is a suppressor of polarity by virtue of its impaired transcription termination factor (rho) activity, is shown to be an efficient suppressor of lambdaN- mutants. The relief of the N requirement by this host is reflected in a substantial restoration of growth and N-dependent beta-galactosidase expression as well as in a partial relief of polarity of N-defective phages.

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✍ Bourguignon-Van Horen, M. F. ;Henry-Van der Loo, N. 📂 Article 📅 1979 🏛 Springer 🌐 English ⚖ 548 KB

In the polarity suppressor strain psuA 1, we observe a partial N independence of both transcription and DNA-membrane attachment for a lambda NN mutant. These results, in agreement with the genetical data reported by Dambly et al. (1976), suggest that the N product and rho factor are involved in the