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PMID: 8552617 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S.

Enterococcus faecalis pheromone binding protein, PrgZ, recruits a chromosomal oligopeptide permease system to import sex pheromone cCF10 for induction of conjugation.

Leonard BA, Podbielski A, Hedberg PJ, Dunny GM

Abstract

Conjugative transfer of the plasmid pCF10 by Enterococcus faecalis donor cells occurs in response to a peptide sex pheromone, cCF10, secreted by recipients. The plasmid-encoded cCF10 binding protein, PrgZ, is similar in sequence to binding proteins (OppAs) encoded by oligopeptide permease (opp) operons. Mutation of prgZ decreased the sensitivity of donor cells to pheromone, whereas inactivation of the chromosomal E. faecalis opp operon abolished response at physiological concentrations of pheromone. Affinity chromatography experiments demonstrated the interaction of the pheromone with several putative intracellular regulatory molecules, including an RNA molecule required for positive regulation of conjugation functions. These data suggest that processing of the pheromone signal involves recruitment of a chromosomal Opp system by PrgZ and that signaling occurs by direct interaction of internalized pheromone with intracellular effectors.

MeSH Terms
Amino Acid Sequence Bacterial Proteins/genetics,physiology Base Sequence Carrier Proteins/metabolism Conjugation, Genetic DNA Primers/chemistry Enterococcus faecalis/physiology Macromolecular Substances Membrane Transport Proteins/metabolism Molecular Sequence Data Oligopeptides/chemistry,metabolism Pheromones/metabolism Plasmids Protein Binding Protein Sorting Signals/genetics RNA, Bacterial/metabolism RNA, Messenger/metabolism RNA-Binding Proteins/physiology Ribonucleoproteins/physiology Signal Transduction
Chemicals
Bacterial Proteins Carrier Proteins DNA Primers Macromolecular Substances Membrane Transport Proteins Oligopeptides Pheromones PrgZ protein, Enterococcus faecalis Protein Sorting Signals RNA, Bacterial RNA, Messenger RNA-Binding Proteins Ribonucleoproteins iCF10 peptide precursor, Plasmid pCF10 peptide pheromone cCF10 oligopeptide permease, Bacteria
Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Leonard B A
Institute for Advanced Studies in Biological Process Technology, University of Minnesota Medical School, Minneapolis 55455, USA.
Podbielski A
Hedberg P J
Dunny G M
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Article Info
Journal
Proceedings of the National Academy of Sciences of the United States of America
Abbr.
Proc Natl Acad Sci U S A
ISSN
0027-8424
Published
1996-01-09
Pages
260-4
Language
English
Region
United States
NLM ID
7505876
PMCID
PMC40218
Subset
IM
Grants
NIAID NIH HHS · 1F32 AI08742 · United States
NIGMS NIH HHS · 1RO1 GM49530 · United States
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