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Complex Behavior of Phosphatidylcholine-Phosphatidic Acid Bilayers and Monolayers: Effect of Acyl Chain Unsaturation

Tutkimustuotosvertaisarvioitu

Standard

Complex Behavior of Phosphatidylcholine-Phosphatidic Acid Bilayers and Monolayers : Effect of Acyl Chain Unsaturation. / Kulig, Waldemar; Korolainen, Hanna; Zatorska, Maria; Kwolek, Urszula; Wydro, Paweł; Kepczynski, Mariusz; Róg, Tomasz.

julkaisussa: Langmuir, Vuosikerta 35, Nro 17, 30.04.2019, s. 5944-5956.

Tutkimustuotosvertaisarvioitu

Harvard

Kulig, W, Korolainen, H, Zatorska, M, Kwolek, U, Wydro, P, Kepczynski, M & Róg, T 2019, 'Complex Behavior of Phosphatidylcholine-Phosphatidic Acid Bilayers and Monolayers: Effect of Acyl Chain Unsaturation', Langmuir, Vuosikerta. 35, Nro 17, Sivut 5944-5956. https://doi.org/10.1021/acs.langmuir.9b00381

APA

Kulig, W., Korolainen, H., Zatorska, M., Kwolek, U., Wydro, P., Kepczynski, M., & Róg, T. (2019). Complex Behavior of Phosphatidylcholine-Phosphatidic Acid Bilayers and Monolayers: Effect of Acyl Chain Unsaturation. Langmuir, 35(17), 5944-5956. https://doi.org/10.1021/acs.langmuir.9b00381

Vancouver

Kulig W, Korolainen H, Zatorska M, Kwolek U, Wydro P, Kepczynski M et al. Complex Behavior of Phosphatidylcholine-Phosphatidic Acid Bilayers and Monolayers: Effect of Acyl Chain Unsaturation. Langmuir. 2019 huhti 30;35(17):5944-5956. https://doi.org/10.1021/acs.langmuir.9b00381

Author

Kulig, Waldemar ; Korolainen, Hanna ; Zatorska, Maria ; Kwolek, Urszula ; Wydro, Paweł ; Kepczynski, Mariusz ; Róg, Tomasz. / Complex Behavior of Phosphatidylcholine-Phosphatidic Acid Bilayers and Monolayers : Effect of Acyl Chain Unsaturation. Julkaisussa: Langmuir. 2019 ; Vuosikerta 35, Nro 17. Sivut 5944-5956.

Bibtex - Lataa

@article{2c02be43be034371a40947c143e5370b,
title = "Complex Behavior of Phosphatidylcholine-Phosphatidic Acid Bilayers and Monolayers: Effect of Acyl Chain Unsaturation",
abstract = "Phosphatidic acids (PAs) have many biological functions in biomembranes, e.g., they are involved in the proliferation, differentiation, and transformation of cells. Despite decades of research, the molecular understanding of how PAs affect the properties of biomembranes remains elusive. In this study, we explored the properties of lipid bilayers and monolayers composed of PAs and phosphatidylcholines (PCs) with various acyl chains. For this purpose, the Langmuir monolayer technique and atomistic molecular dynamics (MD) simulations were used to study the miscibility of PA and PC lipids and the molecular organization of mixed bilayers. The monolayer experiments demonstrated that the miscibility of membrane components strongly depends on the structure of the hydrocarbon chains and thus on the overall lipid shape. Interactions between PA and PC molecules vary from repulsive, for systems containing lipids with saturated and unsaturated acyl tails (strongly positive values of the excess free energy of mixing), to attractive, for systems in which all lipid tails are saturated (negative values of the excess free energy of mixing). The MD simulations provided atomistic insight into polar interactions (formation of hydrogen bonds and charge pairs) in PC-PA systems. H-bonding between PA monoanions and PCs in mixed bilayers is infrequent, and the lipid molecules interact mainly via electrostatic interactions. However, the number of charge pairs significantly decreases with the number of unsaturated lipid chains in the PA-PC system. The PA dianions weakly interact with the zwitterionic lipids, but their headgroups are more hydrated as compared to the monoanionic form. The acyl chains in all PC-PA bilayers are more ordered compared to single-component PC systems. In addition, depending on the combination of lipids, we observed a deeper location of the PA phosphate groups compared to the PC phosphate groups, which can alter the presentation of PAs for the peripheral membrane proteins, affecting their accessibility for binding. {\circledC}",
author = "Waldemar Kulig and Hanna Korolainen and Maria Zatorska and Urszula Kwolek and Paweł Wydro and Mariusz Kepczynski and Tomasz R{\'o}g",
year = "2019",
month = "4",
day = "30",
doi = "10.1021/acs.langmuir.9b00381",
language = "English",
volume = "35",
pages = "5944--5956",
journal = "Langmuir",
issn = "0743-7463",
publisher = "AMER CHEMICAL SOC",
number = "17",

}

RIS (suitable for import to EndNote) - Lataa

TY - JOUR

T1 - Complex Behavior of Phosphatidylcholine-Phosphatidic Acid Bilayers and Monolayers

T2 - Effect of Acyl Chain Unsaturation

AU - Kulig, Waldemar

AU - Korolainen, Hanna

AU - Zatorska, Maria

AU - Kwolek, Urszula

AU - Wydro, Paweł

AU - Kepczynski, Mariusz

AU - Róg, Tomasz

PY - 2019/4/30

Y1 - 2019/4/30

N2 - Phosphatidic acids (PAs) have many biological functions in biomembranes, e.g., they are involved in the proliferation, differentiation, and transformation of cells. Despite decades of research, the molecular understanding of how PAs affect the properties of biomembranes remains elusive. In this study, we explored the properties of lipid bilayers and monolayers composed of PAs and phosphatidylcholines (PCs) with various acyl chains. For this purpose, the Langmuir monolayer technique and atomistic molecular dynamics (MD) simulations were used to study the miscibility of PA and PC lipids and the molecular organization of mixed bilayers. The monolayer experiments demonstrated that the miscibility of membrane components strongly depends on the structure of the hydrocarbon chains and thus on the overall lipid shape. Interactions between PA and PC molecules vary from repulsive, for systems containing lipids with saturated and unsaturated acyl tails (strongly positive values of the excess free energy of mixing), to attractive, for systems in which all lipid tails are saturated (negative values of the excess free energy of mixing). The MD simulations provided atomistic insight into polar interactions (formation of hydrogen bonds and charge pairs) in PC-PA systems. H-bonding between PA monoanions and PCs in mixed bilayers is infrequent, and the lipid molecules interact mainly via electrostatic interactions. However, the number of charge pairs significantly decreases with the number of unsaturated lipid chains in the PA-PC system. The PA dianions weakly interact with the zwitterionic lipids, but their headgroups are more hydrated as compared to the monoanionic form. The acyl chains in all PC-PA bilayers are more ordered compared to single-component PC systems. In addition, depending on the combination of lipids, we observed a deeper location of the PA phosphate groups compared to the PC phosphate groups, which can alter the presentation of PAs for the peripheral membrane proteins, affecting their accessibility for binding. ©

AB - Phosphatidic acids (PAs) have many biological functions in biomembranes, e.g., they are involved in the proliferation, differentiation, and transformation of cells. Despite decades of research, the molecular understanding of how PAs affect the properties of biomembranes remains elusive. In this study, we explored the properties of lipid bilayers and monolayers composed of PAs and phosphatidylcholines (PCs) with various acyl chains. For this purpose, the Langmuir monolayer technique and atomistic molecular dynamics (MD) simulations were used to study the miscibility of PA and PC lipids and the molecular organization of mixed bilayers. The monolayer experiments demonstrated that the miscibility of membrane components strongly depends on the structure of the hydrocarbon chains and thus on the overall lipid shape. Interactions between PA and PC molecules vary from repulsive, for systems containing lipids with saturated and unsaturated acyl tails (strongly positive values of the excess free energy of mixing), to attractive, for systems in which all lipid tails are saturated (negative values of the excess free energy of mixing). The MD simulations provided atomistic insight into polar interactions (formation of hydrogen bonds and charge pairs) in PC-PA systems. H-bonding between PA monoanions and PCs in mixed bilayers is infrequent, and the lipid molecules interact mainly via electrostatic interactions. However, the number of charge pairs significantly decreases with the number of unsaturated lipid chains in the PA-PC system. The PA dianions weakly interact with the zwitterionic lipids, but their headgroups are more hydrated as compared to the monoanionic form. The acyl chains in all PC-PA bilayers are more ordered compared to single-component PC systems. In addition, depending on the combination of lipids, we observed a deeper location of the PA phosphate groups compared to the PC phosphate groups, which can alter the presentation of PAs for the peripheral membrane proteins, affecting their accessibility for binding. ©

U2 - 10.1021/acs.langmuir.9b00381

DO - 10.1021/acs.langmuir.9b00381

M3 - Article

VL - 35

SP - 5944

EP - 5956

JO - Langmuir

JF - Langmuir

SN - 0743-7463

IS - 17

ER -