AI Article Synopsis
- New sex pheromone plasmids in Enterococcus faecalis were identified, including pIP964 (haemolysin-bacteriocin), pIP1017, pIP1438, pIP1440 (R plasmids), and pIP1141, pMV120 (cryptic conjugative plasmids).
- The identification relied on observing cell aggregates during conjugation, successful transfer in broth, and clumping reactions of plasmid-carrying cells.
- These plasmids were shown to hybridize with DNA probes for genes that encode surface proteins necessary for their conjugative transfer.
Article Abstract
We describe the identification of the following new sex pheromone plasmids in Enterococcus faecalis: a haemolysin-bacteriocin plasmid, pIP964; three R plasmids, pIP1017, pIP1438 and pIP1440; and two cryptic conjugative plasmids, pIP1141 and pMV120. The identification was based on the formation of cell aggregates on filter membranes during conjugation, on efficient transfer in broth matings, and on a positive clumping reaction of cells carrying these plasmids. In addition these plasmids hybridized with DNA probes specific for sex pheromone-induced structural genes encoding surface proteins required for conjugative transfer of the plasmids.
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| http://dx.doi.org/10.1007/BF00587574 | DOI Listing |
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