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Plasmid. 1994 Mar;31(2):215-21.

Characterization of the determinant (traB) encoding sex pheromone shutdown by the hemolysin/bacteriocin plasmid pAD1 in Enterococcus faecalis.

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1
Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor 48109.

Abstract

pAD1 is a hemolysin/bacteriocin plasmid originally identified in Enterococcus faecalis DS16. It encodes a mating response to a peptide sex pheromone, cAD1, secreted by recipient bacteria. Once pAD1 is acquired, production of the pheromone ceases--a trait related in part to a determinant designated traB. Here we report the nucleotide sequence of traB and the position of several transposon insertions resulting in the characteristic self-induction phenotype. The deduced product has a mass of 43.7 kDa with the C-terminal third consisting primarily of hydrophobic amino acid residues.

PMID:
8029329
DOI:
10.1006/plas.1994.1023
[Indexed for MEDLINE]
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