Effect of amino acid substitution in the staphylococcal peptides warnericin RK and PSMα on their anti-Legionella and hemolytic activities. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Molecular and Cellular Biochemistry Année : 2015

Effect of amino acid substitution in the staphylococcal peptides warnericin RK and PSMα on their anti-Legionella and hemolytic activities.

Résumé

Warnericin RK from Staphylococcus warneri and PSMα from Staphylococcus epidermidis are anti-Legionella peptides which were differently classified in a previous study according to their mode of action. Indeed, warnericin RK is highly hemolytic with a bactericidal mode of action, whereas PSMα is poorly hemolytic with a bacteriostatic mode of action toward L. pneumophila. In order to find anti-Legionella peptides which are not hemolytic, a collection of peptides varying in sequence from warnericin RK to PSMα were designed and synthesized, and their anti-Legionella activities, in terms of growth inhibition, permeabilization, and bactericidal effect, as well as their hemolytic activities, were measured and compared. The results showed that some residues, at position 14 for both peptides for instance, were of major importance for bactericidal and hemolytic activities.
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Dates et versions

hal-01427423 , version 1 (05-01-2017)

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Adrienne Marchand, Jacques Augenstreich, Clémence Loiseau, Julien Verdon, Sophie Lecomte, et al.. Effect of amino acid substitution in the staphylococcal peptides warnericin RK and PSMα on their anti-Legionella and hemolytic activities.. Molecular and Cellular Biochemistry, 2015, 405 (1-2), pp.159-67. ⟨10.1007/s11010-015-2407-1⟩. ⟨hal-01427423⟩
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