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dc.contributor.author
Chiarpotti, Maria Vanina
dc.contributor.author
Galassi, Vanesa Viviana
dc.contributor.author
Longo, Gabriel Sebastian
dc.contributor.author
del Popolo, Mario Gabriel
dc.date.available
2024-09-04T15:16:34Z
dc.date.issued
2024-04
dc.identifier.citation
Chiarpotti, Maria Vanina; Galassi, Vanesa Viviana; Longo, Gabriel Sebastian; del Popolo, Mario Gabriel; Enhanced Adsorption Response of pH-Sensitive Peptides: The Role of Membrane Acidity; American Chemical Society; Journal of Physical Chemistry B; 128; 18; 4-2024; 4396-4403
dc.identifier.issn
1520-6106
dc.identifier.uri
http://hdl.handle.net/11336/243597
dc.description.abstract
pH-sensitive peptides bind and traverse lipid membranes in response to changes in pH. They can be used to target tumors and other acidic tissues. We investigate the influence of acidic lipids on the pH-driven adsorption of recently synthesized peptides. Using a statistical-thermodynamic theory that takes into account the acid?base chemistry of peptides and lipids, we find that the presence of acidic lipids amplifies changes in peptide surface concentration when transitioning from high to low pH. We study cyclic and linear peptides, containing tryptophan, glutamic acid, and arginine residues, examining their behavior in both neutral and acidic membranes. Membrane binding consistently results from the shallow insertion of tryptophan residues with hydrophilic residues facing the aqueous solution. Regardless of the pH, the peptide?s geometry predominantly determines the orientation and distribution of residues. Notably, we find that not only the extent of adsorption is pH-sensitive but also the underlying adsorption mechanism: it is barrier-free at low pH but hindered by a large free energy barrier at high pH. Hence, under more acidic conditions, pH-sensitive peptides show facilitated adsorption both kinetically and thermodynamically.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Péptidos Sensibles al pH
dc.subject
Simulaciones
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Otras Ciencias Químicas
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Enhanced Adsorption Response of pH-Sensitive Peptides: The Role of Membrane Acidity
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-08-26T10:55:45Z
dc.journal.volume
128
dc.journal.number
18
dc.journal.pagination
4396-4403
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Chiarpotti, Maria Vanina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Básicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Básicas; Argentina
dc.description.fil
Fil: Galassi, Vanesa Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Básicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Básicas; Argentina
dc.description.fil
Fil: Longo, Gabriel Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
dc.description.fil
Fil: del Popolo, Mario Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Básicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Básicas; Argentina
dc.journal.title
Journal of Physical Chemistry B
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/acs.jpcb.4c01785
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