Abnormal excision and transfer of chromosomal segments by a strain of Escherichia coli K-12.

@article{Bergquist1972AbnormalEA,
  title={Abnormal excision and transfer of chromosomal segments by a strain of Escherichia coli K-12.},
  author={Peter L. Bergquist and Edward A. Adelberg},
  journal={Journal of bacteriology},
  year={1972},
  volume={111 1},
  pages={119-28}
}
PB15 is an Hfr strain of Escherichia coli K-12. It arose from an F' strain carrying a temperature-sensitive F-gal by an event which blocked the detachment of F-gal in the normally reversible integration process. In PB15, the detachment of F-gal by a second mechanism can now be detected: this mechanism results in the excision and transfer of extended chromosomal segments which include the integrated F-gal; the excised segments are inferred to have circularized. Their excision, which is… CONTINUE READING

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