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

A 2.1-kilobase segment of the antibiotic resistance plasmid R6K carries sufficient information to replicate as a plasmid in Escherichia coli. This segment contains a functional origin of replication and a structural gene for a protein, designated pi, that is required for the initiation of R6K replication. The nucleotide sequence of a 520-base-pair portion of this 2.1-kilobase segment that includes the functional origin of replication and the region adjacent to the start of the pi structural gene was determined. A striking feature of the sequence is the presence of seven 22-base-pair direct repeats joined in tandem in the region adjacent to the start of the pi gene. A possible role of the tandem repeats in the regulation of expression of the pi protein and the control of initiation of replication of the plasmid R6K is discussed.

Nucleotide sequence of the region of an origin of replication of the antibiotic resistance plasmid R6K.