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

The natural transformability of the soil bacterium Acinetobacter sp. ADP1 (BD413UE), formerly classified as A. calcoaceticus, has facilitated previous physiological and biochemical investigations. In the present studies, the natural transformation system was exploited to generated a physical and genetic map of this strain's 3780 +/- 191 kbp circular chromosome. Previously isolated Acinetobacter genes were modified in vitro to incorporate a recognition sequence for the restriction endonuclease NotI. Following transformation of the wild-type strain by the modified DNA, homologous recombination placed each engineered NotI cleavage site at the chromosomal location of the corresponding gene. This allowed precise gene localization and orientation of more than 40 genes relative to a physical map which was constructed with transverse alternating field electrophoresis (TAFE) and Southern hybridization methods. The positions of NotI, AscI and I-CeuI recognition sites were determined, and the latter enzyme identified the presence of seven ribosomal RNA operons. Multiple chromosomal copies of insertion sequence IS1236 were indicated by hybridization. Several of these copies were concentrated in one region of the chromosome in which a spontaneous deletion of approximately 100 kbp occurred. Moreover, contrary to previous reports, ColE1-based plasmids appeared to replicate autonomously in Acinetobacter sp. ADP1.

microbiology

Directed introduction of DNA cleavage sites to produce a high-resolution genetic and physical map of the Acinetobacter sp. strain ADP1 (BD413UE) chromosome