Modification of Streptococcus faecalis sex pheromones after acquisition of plasmid DNA.
نویسندگان
چکیده
منابع مشابه
Plasmid transfer in Streptococcus faecalis: production of multiple sex pheromones by recipients.
In a previous report (1978, Proc. Nat. Acad. Sci. USA 75, 3479-3483), we showed that recipient strains of Streptococcusfaecalis excrete a heat-stable substance (sex pheromone) which induces donor cells carrying certain conjugative plasmids to become adherent, generating the cell-to-cell contact necessary for plasmid transfer. Since donors themselves could be induced to aggregate or “clump” by r...
متن کاملSex pheromones and plasmid transfer in Enterococcus faecalis.
Plasmid-free Enterococcus faecalis excrete peptides (sex pheromones) which specifically induce a mating response in strains harboring certain conjugative plasmids. The response is characterized by the synthesis of a "fuzzy" surface material, visible by electron microscopy, which is believed to facilitate the aggregation of donors and recipients. Transconjugants which receive a specific plasmid ...
متن کاملSex pheromones and plasmid transfer in Streptococcus faecalis: a pheromone, cAM373, which is also excreted by Staphylococcus aureus.
Within a highly evolved mult icel lular organi sm, communicat ion between dis tally located ce l l s occurs by means o f a variety o f different chemica l s ignals . These hormonal substances play important roles in deve lopment , maintenance, and fertility and are a lso involved in coordinating immune and neurological responses to external st imuli . Chemical communicat ion can also occur betw...
متن کاملIsolation and structure of the bacterial sex pheromone, cAD1, that induces plasmid transfer in Streptococcus faecalis.
The Streptococcus faecalis sex pheromone cAD1, which is involved in the conjugative transfer of the hemolysin plasmid pAD1, has been isolated and its structure determined. Its Mr is 818 and its amino acid sequence is H-Leu-Phe-Ser-Leu-Val-Leu-Ala-Gly-OH. A replicate of the pheromone synthesized by the liquid-phase method showed the same biological activity and chromatographic behavior as the is...
متن کاملEffect of protein synthesis on plasmid maintenance in Streptococcus faecalis.
Plasmid-to-chromosome ratios in Enterobacteriaceae, upon interruption of protein synthesis by chloramphenicol, are either conserved or increased when measured by dye buoyant density centrifugation. We have found, on the other hand, that the effect of inhibition of protein synthesis on the amount of covalently closed circular deoxyribonucleic acid visualized by this method in two strains of Stre...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1983
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.80.17.5369