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@ARTICLE{Vitiello:1034425,
author = {Vitiello, Giuseppe and Luchini, Alessandra and Di Napoli,
Michela and Gallucci, Noemi and Cavasso, Domenico and
Koutsioumpas, Alexandros and Varcamonti, Mario and
Zanfardino, Anna and Fragneto, Giovanna and Paduano, Luigi},
title = {{T}he affinity towards the hydrophobic region of
biomimicking bacterial membranes drives the antimicrobial
activity of {EFV}12 peptide from {L}actobacillus gasseri gut
microbiota},
journal = {Journal of molecular liquids},
volume = {414},
number = {Part A},
issn = {0167-7322},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2024-07206},
pages = {126086 -},
year = {2024},
abstract = {The gut microbiota consists of a large variety of
microorganisms, which interact with the immune system and
exert essential roles for the human body health. Many of
these microorganisms are also capable of producing various
bioactive molecules, such as selective antimicrobial
peptides, thus promoting the proliferation of only certain
bacterial strains. These result in the shaping of the
composition of the local microbiome and the co-evolution
with a complex microbiome. Recently, a small peptide, named
EFV12 and deriving from the bacterium Lactobacillus gasseri
SF1109 regularly placed in the human intestine, showed a
significant antimicrobial activity. Here we discuss a
biophysical study on the structural changes induced by the
peptide on lipid bilayers mimicking bacterial membranes with
the aim of shedding light on the molecular features driving
the biocidal activity against Gram(+) and Gram(−) strains.
Supported Lipid Bilayers and liposomes composed of
1,2-oleoyl-sn-glycero-3-phosphocholine and
1,2-oleoyl-sn-glycero-3-rac-phosphoglycerol, both in the
absence and presence of cardiolipin and lipopolysaccharides
(LPSs), were selected to investigate the peptide-lipid
interactions through a combination of specular Neutron
Reflectometry, Dynamic Light Scattering, Small-Angle X-ray
Scattering and Circular Dichroism measurements. The obtained
results indicated association of EFV12 peptide with the
hydrophobic region of lipid bilayers, which caused their
destabilization, and is thus driving the antimicrobial
activity against bacterial cells.},
cin = {JCNS-FRM-II / MLZ / JCNS-4},
ddc = {540},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3 /
I:(DE-Juel1)JCNS-4-20201012},
pnm = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
(POF4-6G4) / 632 - Materials – Quantum, Complex and
Functional Materials (POF4-632)},
pid = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
experiment = {EXP:(DE-MLZ)MARIA-20140101},
typ = {PUB:(DE-HGF)16},
doi = {10.1016/j.molliq.2024.126086},
url = {https://juser.fz-juelich.de/record/1034425},
}