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A stability transition at mildly acidic pH in the alpha-hemolysin (alpha-toxin) from Staphylococcus aureus
(Elsevier B.V., 1999-10-15)
The effects of mildly acidic conditions on the free energy of unfolding (Delta G(u)(buff)) of the pore-forming alpha-hemolysin (alpha HL) from Staphylococcus aureus were assessed between pH 5.0 and 7.5 by measuring intrinsic ...
The presence of sterols favors Sticholysin I - membrane association and pore formation regardless of their ability to form laterally segregated domains
(American Chemical Society, 2015-09)
Sticholysin I (St I) is a pore-forming toxin (PFT) produced by the Caribbean Sea anemone Stichodactyla helianthus belonging to the actinoporin protein family, a unique class of eukaryotic PFT. As for actinoporins, it has ...
Caracterização e purificação da toxina killer produzida pela levedura Kodamaea ohmeri ES92
(Universidade Federal de Minas GeraisUFMG, 2011-02-28)
Killer toxins or mycocins are extracellular molecules produced by yeaststhat have a deleterious effect on organisms taxonomically related or not to its producers, without cell to cell contact. The yeast Kodamaea ohmeri, ...
Cloning, purification and characterization of nigrelysin, a novel actinoporin from the sea anemone Anthopleura nigrescens
(Elsevier B.V., 2019)
Actinoporins constitute a unique class of pore-forming toxins found in sea anemones that being secreted
as soluble monomers are able to bind and permeabilize membranes leading to cell death. The interest in
these proteins ...
Induction of eryptosis by low concentrations of E. coli alpha-hemolysin
(Elsevier Science, 2015-08)
Uropathogenic strains of Escherichia coli deliver the toxin alpha-hemolysin (HlyA) to optimize the host environment for the spread of infection. It was reported that at high concentrations, the toxin forms pores in eukaryotic ...
The Vip3Ag4 insecticidal protoxin from Bacillus thuringiensis adopts a tetrameric configuration that is maintained on proteolysis
(MDPI AG, 2017-05)
The Vip3 proteins produced during vegetative growth by strains of the bacterium Bacillus thuringiensis show insecticidal activity against lepidopteran insects with a mechanism of action that may involve pore formation and ...