Results 111 to 120 of about 3,995 (211)

Colicins - a sound antimicrobial approach for the prevention of catheter-associated urinary tract infections

, 2017
The emergence and spread of antibiotic resistance has created one of the greatest challenges in fighting infectious disease. We address the rise of antibiotic-resistant pathogens by examining the evolutionary history of a class of resistance determinants,
Roy, Sandra M
core   +1 more source

Research for colicins in shiga toxin-producing Escherichia coli

, 2017
Objetivo: Pesquisar a produção de colicinas por cepas de Escherichia coli produtora de toxina Shiga (STEC) de diferentes sorotipos, isoladas de infecções em humanos, do reservatório animal e do ambiente, buscando analisar sua importância como fator de ...
Marcondes, Caio Antonio Righetti [UNIFESP]
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Preparation and Lyophilization of Colicine Suspensions. II. Lyophilization and Storage of Colicines

Pathologia et Microbiologia, 2010
Seven different types of colicines (B, D, E, K, L, X and V) were lyophilized after growth of colicinogenic E. coli in twelve liquid media and sterilization of the cultures wilh streptomycin. A total of 39 lyophilizations were carried out. With rare exceptions the litre of colicine was well maintained after lyophilization.
openaire   +3 more sources

Construction, expression and release of hybrid colicins.

, 1991
International audienceColicins A and E1 are two pore-forming colicins sharing homology in their C-terminal domains but not in their N-terminal or central domains. Using site-directed mutagenesis, restriction sites were inserted at the proper locations to
Frenette, M, Bénédetti, H, Bernadac, A., Baty, D., Lazdunski, C   +4 more
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Individual domains of colicins confer specificity in colicin uptake, in pore-properties and in immunity requirement.

, 1991
International audienceSix different hybrid colicins were constructed by recombining various domains of the two pore-forming colicins A and E1. These hybrid colicins were purified and their properties were studied.
Knibiehler, M, Frenette, M, Pattus, F., Baty, D., Bénédetti, Hélène, Lazdunski, C   +5 more
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Uptake across the cell envelope and insertion into the inner membrane of ion channel-forming colicins in E coli

, 1990
International audiencePore-forming colicins exert their lethal effect on E coli through formation of a voltage-dependent channel in the inner (cytoplasmic-membrane) thus destroying the energy potential of sensitive cells.
Bourdineaud, J.P., Knibiehler, M., Frenette, M., Cavard, D., Lazdunski, C., Pattus, F., Bénédetti, H., Parker, M., Baty, D.   +8 more
core   +1 more source

Percentages of uroseptic E. coli strains with minimal inhibitory concentrations (MIC) for colicins E1, E6, E7, K and M.

, 2013
Percentages of uroseptic E. coli strains with minimal inhibitory concentrations (MIC) for colicins E1, E6, E7, K and M.
Živa Petkovšek (337006), Maruška Budič (337005), Matija Rijavec (306254), Darja Žgur-Bertok (337007)   +3 more
core   +1 more source

Investigating the role of lysis proteins of enzymatic colicins in bacterial competition [PDF]

Colicins (Cols) are plasmid-encoded toxins produced by Escherichia coli that kill other E. coli and other closely related gram-negative species. Colicins play important role in promoting microbial diversity and provide selective advantage to the ...
Kim, Young Chan
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The long and short of colicin action: the molecular basis for the biological activity of channel-forming colicins

, 1997
Channel-forming colicins undergo a remarkable series of conformational gyrations during their voyage from the extracellular milieu to the periplasmic membrane.
Gouaux, Eric
core   +1 more source

Cell entry mechanism of enzymatic bacterial colicins: Porin recruitment and the thermodynamics of receptor binding

, 2005
Binding of enzymatic E colicins to the vitamin B-12 receptor, BtuB, is the first stage in a cascade of events that culminate in the translocation of the cytotoxic nuclease into the Escherichia coli cytoplasm and release of its tightly bound immunity ...
Kleanthous, Kleanthis, Housden, NG, Loftus, SR, Housden, Nicholas G., Moore, GR, James, Richard, Kleanthous, Colin, James, R, Kleanthous, C, Loftus, Steven R., Moore, Geoffrey R.   +10 more
core   +1 more source