These peptide inhibitors provide a useful tool for studying nuclear import events.
While Zoho Calendar allows you to import events by file or URL, you can now also "subscribe" to another calendar, which will update your calendar regularly.
However, they also point at the existence of additional mechanisms contributing to the even shorter import events observed in vivo.
However, systematic analyses of chromosomal import events after natural transformation have not been performed in H. pylori.
Since H. pylori imports DNA through an unusual type IV secretion system (ComB, ref. [5]), we hypothesized that this machinery might be involved in generating short import events.
The mean length estimate of import events in the mutY mutant was 3268 bp, almost twice of that observed in wild type bacteria.
To determine the position of point mutations or import events in rpoB, a 2370 bp PCR fragment of rpoB was amplified with primers HPrpoB-1 and HPrpoB-6.
We have developed an in vitro transformation protocol that permits to study import events after natural transformation and to assess the role of candidate genes in determining import frequency and length.
McKane and Milkman used restriction fragment polymorphisms to characterize import events after transduction of ∼100 kb of DNA into E. coli, reporting that import frequently occurred in multiple fragments with a mean size of 8 14 kb.
The length of import events was thus longer than previously observed in sequential patient isolates (417 bp, ref. [9]), but still shorter than values reported for transformation in most other bacterial species.
Due to this high degree of sequence divergence, even small imports created a mosaic sequence, and in many cases, both start and end point of DNA import events could be mapped with high accuracy by comparing the mosaic recombinant sequence with both donor and recipient sequences (Fig. 2).
