English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Cells colicinogenic for the colicin plasmids E1 or E2 (Col E1 and Col E2, respectively) were selected for a loss of colicin production after infection with bacteriophage Mu. Extrachromosomal deoxyribonucleic acid that was larger than the original colicin plasmids was found in such cells. A small insertion mutant in Col E1 deoxyribonucleic acid affecting active colicin production without affecting either expression of colicin immunity or Col E1 deoxyribonucleic acid replication was found. Cells carrying this Col E1 plasmid mutant do not exhibit the lethal event associated with colicin E1 induction, suggesting that synthesis of active colicin is required for killing during induction. The altered Col E2 plasmid, containing an insertion at least as large as phage Mu, was maintained unstably in the mutants examined.

Isolation and Characterization of Mutants of Colicin Plasmids E1 and E2 After Mu Bacteriophage Infection