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Surfactin molecules with a cone-like structure promote the formation of membrane domains with negative spontaneous curvature and induce membrane invaginationsPandur, Žiga ...Surfactin uniquely influences lipid bilayer structure by initially inducing membrane invaginations before solubi-lization. In this study, we exposed DOPC giant vesicles to various surfactin ... concentrations at different tempera-tures and observed surfactin-induced membrane invaginations by using differential interference contrast andconfocal laser fluorescence microscopy. These invaginations were stable at room temperature but not at highertemperatures. Surfactin molecules induce membrane nanodomains with negative spontaneous curvature andmembrane invaginations despite their intrinsic conical shape and intrinsic positive curvature. Considering theexperimentally observed capacity of surfactin to fluidize lipid acyl chains and induce partial dehydration of lipidheadgroups, we propose that the resulting surfactin-lipid complexes exhibit a net negative spontaneous curva-ture. We further conducted 3D numerical Monte Carlo (MC) simulations to investigate the behaviour of vesiclescontaining negative curvature nanodomains within their membrane at varying temperatures. MC simulationsdemonstrated strong agreement with experimental results, revealing that invaginations are preferentially formedat low temperatures, while being less pronounced at elevated temperatures. Our findings go beyond the expecta-tions of the Israelachvili molecular shape and packing concepts analysis. These concepts do not take into accountthe influence of specific interactions between neighboring molecules on the inherent shapes of molecules andtheir arrangement within curved membrane nanodomains. Our work contributes to a more comprehensive un-derstanding of the complex factors governing vesicle morphology and membrane organization and provides in-sight into the role of detergent-lipid interactions in modulating vesicle morphology.Source: Journal of colloid and interface science. - ISSN 0021-9797 (Vol. 650, Part B, Nov. 2023, str. 1193-1200)Type of material - article, component partPublish date - 2023Language - englishCOBISS.SI-ID - 159013379
Author | Pandur, Žiga ... |
Title | Surfactin molecules with a cone-like structure promote the formation of membrane domains with negative spontaneous curvature and induce membrane invaginations |
Publication date | 2023-07-10 |
COBISS.SI-ID | 159013379 |
Publication version in repository | Publisher's version |
Publication licence | Creative Commons Attribution-NonCommercial 4.0 International |
Embargo | Unidentified |
Project(s) from which the publication was funded
Title | Acronym | Project ID | Funder |
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Analiza biomedicinskih slik in signalov | P2-0232-2022 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
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Mehanizmi varovanja zdravja | P3-0388-2022 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
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Mikrobiologija in biotehnologija živil in okolja | P4-0116-2022 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
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Vpliv mehanike in topologije membrane na celično ujetje bakterij, virionov in anorganskih delcev | J2-4447 | ||
Optimizacija s trombociti in zunajceličnimi vezikli bogate avtologne krvne plazme za zdravljenje pooperativnih ran v otorinolaringologiji | J3-3066-2021 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
Files that belong to the publication
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https://www.sciencedirect.com/science/article/pii/S0021979723013061?via%3Dihub |
https://repozitorij.uni-lj.si/IzpisGradiva.php?id=153008 |
source: Journal of colloid and interface science. - ISSN 0021-9797 (Vol. 650, Part B, Nov. 2023, str. 1193-1200)
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Pandur, Žiga | 53231 |
Penič, Samo | 28467 |
Iglič, Aleš, 1960- | 04634 |
Kralj-Iglič, Veronika | 05916 |
Stopar, David | 13005 |
Drab, Mitja | 37417 |
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