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 Plus annual

Presents the access of premium content as premium feature

Premium Content

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 annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We have isolated a series of nondefective φ80 specialized transducing phage which carry segments of theSalmonella typhimurium trp operon. These phage were obtained from a lysogenic derivative of a merozygote constructed by transferring anS. typhimurium trp episome into anEscherichia coli strain which lacks the normal φ80 attachment site. The deoxyribonucleic acid (DNA) from one such phage was purified and employed in DNA-ribonucleic acid (RNA) hybridization studies. The results obtained show that, under our hybridization conditions, heterologous hybridization is less efficient than homologous hybridization. It was also observed that not allS. typhimurium trp messenger RNA can readily anneal toE. coli trp operon DNA. Heterologous hybrids consisting ofS. typhimurium trp messenger RNA andE. coli trp operon DNA were estimated to have a dissociation constant 10-fold larger than that of homologous hybrids.

Isolation and Characterization of Specialized φ80 Transducing Phages Carrying Regions of the Salmonella typhimurium trp Operon