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Helmut Hirt

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Mahsa Abdolhosseini; Helmut Hirt; Seshagiri R Nandula; Jonathan Song; Sven-Ulrik Gorr
Lysine substitutions convert a bacterial-agglutinating peptide into a bactericidal peptide that retains anti-lipopolysaccharide activity and low hemolytic activity.
Josephine R Chandler; Helmut Hirt; Gary M Dunny
A paracrine peptide sex pheromone also acts as an autocrine signal to induce plasmid transfer and virulence factor expression in vivo.
Christopher M Waters; Helmut Hirt; John K McCormick; Patrick M Schlievert; Carol L Wells; Gary M Dunny
An amino-terminal domain of Enterococcus faecalis aggregation substance is required for aggregation, bacterial internalization by epithelial cells and binding to lipoteichoic acid.

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2012: Mahsa Abdolhosseini; Helmut Hirt; Seshagiri R Nandula; Jonathan Song; Sven-Ulrik Gorr
Lysine substitutions convert a bacterial-agglutinating peptide into a bactericidal peptide that retains anti-lipopolysaccharide activity and low hemolytic activity.
Peptides 2012;35(2):231-8.
2005: Josephine R Chandler; Helmut Hirt; Gary M Dunny
A paracrine peptide sex pheromone also acts as an autocrine signal to induce plasmid transfer and virulence factor expression in vivo.
Proceedings of the National Academy of Sciences of the United States of America 2005;102(43):15617-22.
2004: Christopher M Waters; Helmut Hirt; John K McCormick; Patrick M Schlievert; Carol L Wells; Gary M Dunny
An amino-terminal domain of Enterococcus faecalis aggregation substance is required for aggregation, bacterial internalization by epithelial cells and binding to lipoteichoic acid.
Molecular microbiology 2004;52(4):1159-71.
2002: Helmut Hirt; Patrick M Schlievert; Gary M Dunny
In vivo induction of virulence and antibiotic resistance transfer in Enterococcus faecalis mediated by the sex pheromone-sensing system of pCF10.
Infection and immunity 2002;70(2):716-23.
2001: Gary M Dunny; Michelle H Antiporta; Helmut Hirt
Peptide pheromone-induced transfer of plasmid pCF10 in Enterococcus faecalis: probing the genetic and molecular basis for specificity of the pheromone response.
Peptides 2001;22(10):1529-39.
2001: John K McCormick; Helmut Hirt; Christopher M Waters; Timothy J Tripp; Gary M Dunny; Patrick M Schlievert
Antibodies to a surface-exposed, N-terminal domain of aggregation substance are not protective in the rabbit model of Enterococcus faecalis infective endocarditis.
Infection and immunity 2001;69(5):3305-14.
2000: Carol L Wells; E A Moore; J A Hoag; Helmut Hirt; Gary M Dunny; Stanley L Erlandsen
Inducible expression of Enterococcus faecalis aggregation substance surface protein facilitates bacterial internalization by cultured enterocytes.
Infection and immunity 2000;68(12):7190-4.
2000: Helmut Hirt; Stanley L Erlandsen; Gary M Dunny
Heterologous inducible expression of Enterococcus faecalis pCF10 aggregation substance asc10 in Lactococcus lactis and Streptococcus gordonii contributes to cell hydrophobicity and adhesion to fibrin.
Journal of bacteriology 2000;182(8):2299-306.
1998: Patrick M Schlievert; PJ Gahr; AP Assimacopoulos; Martin M Dinges; JA Stoehr; J W Harmala; Helmut Hirt; Gary M Dunny
Aggregation and binding substances enhance pathogenicity in rabbit models of Enterococcus faecalis endocarditis.
Infection and immunity 1998;66(1):218-23.