1
|
Muragishi R, Sato M. Structures Formed by Particles with Shoulderlike Repulsive Interaction in Thin Systems. ACS OMEGA 2023; 8:30450-30458. [PMID: 37636963 PMCID: PMC10448489 DOI: 10.1021/acsomega.3c03624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 07/25/2023] [Indexed: 08/29/2023]
Abstract
When particles are constructed in thin systems between two parallel flat walls, structures that are not observed in bulk systems are created and the created structures change, depending on the width between the walls. In this study, the structures formed by particles constructed in thin systems were investigated through performing isothermal-isobaric Monte Carlo simulations, where the interaction between the particles is given by the hard-core square shoulder potential. By controlling the width of the shoulder-like repulsive interaction and the system width, several novel structures such as the connection of rhombuses and the square lattice of the (100) face of the body-centered cubic lattice were created.
Collapse
Affiliation(s)
- Ryo Muragishi
- Graduate
School of Natural Science and Technology, Kanazawa University, 920-1192 Kanazawa, Japan
| | - Masahide Sato
- Emerging
Media Initiative, Kanazawa University, 920-1192 Kanazawa, Japan
| |
Collapse
|
2
|
Boukhari SE, Chahid M. Dynamic structure factors of fluid membranes exhibiting lateral and flip-flop transitions: Effects of inclusions and the presence of an interacting wall. SCIENTIFIC AFRICAN 2021. [DOI: 10.1016/j.sciaf.2021.e00920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
|
3
|
Boukhari SE, Chahid M. Effects of inclusions and the presence of an adsorbing surface on lateral and flip-flop phase transitions in fluid membranes. SCIENTIFIC AFRICAN 2021. [DOI: 10.1016/j.sciaf.2021.e00736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
4
|
Lemaalem M, Hadrioui N, El Fassi S, Derouiche A, Ridouane H. An efficient approach to study membrane nano-inclusions: from the complex biological world to a simple representation. RSC Adv 2021; 11:10962-10974. [PMID: 35423551 PMCID: PMC8695885 DOI: 10.1039/d1ra00632k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 03/04/2021] [Indexed: 01/14/2023] Open
Abstract
Membrane nano-inclusions (NIs) are of great interest in biophysics, materials science, nanotechnology, and medicine. We hypothesized that the NIs within a biological membrane bilayer interact via a simple and efficient interaction potential, inspired by previous experimental and theoretical work. This interaction implicitly treats the membrane lipids but takes into account its effect on the NIs micro-arrangement. Thus, the study of the NIs is simplified to a two-dimensional colloidal system with implicit solvent. We calculated the structural properties from Molecular Dynamics simulations (MD), and we developed a Scaling Theory to discuss their behavior. We determined the thermal properties through potential energy per NI and pressure, and we discussed their variation as a function of the NIs number density. We performed a detailed study of the NIs dynamics using two approaches, MD simulations, and Dynamics Theory. We identified two characteristic values of number density, namely a critical number density n c = 3.67 × 10-3 Å-2 corresponded to the apparition of chain-like structures along with the liquid dispersed structure and the gelation number density n g = 8.40 × 10-3 Å-2 corresponded to the jamming state. We showed that the aggregation structure of NIs is of fractal dimension d F < 2. Also, we identified three diffusion regimes of membrane NIs, namely, normal for n < n c, subdiffusive for n c ≤ n < n g, and blocked for n ≥ n g. Thus, this paper proposes a simple and effective approach for studying the physical properties of membrane NIs. In particular, our results identify scaling exponents related to the microstructure and dynamics of membrane NIs.
Collapse
Affiliation(s)
- M Lemaalem
- Laboratoire de Physique des Polymères et Phénomènes Critiques, Sciences Faculty Ben M'Sik, Hassan II University P.O. Box 7955 Casablanca Morocco
| | - N Hadrioui
- Laboratoire de Physique des Polymères et Phénomènes Critiques, Sciences Faculty Ben M'Sik, Hassan II University P.O. Box 7955 Casablanca Morocco
| | - S El Fassi
- Laboratoire de Physique des Polymères et Phénomènes Critiques, Sciences Faculty Ben M'Sik, Hassan II University P.O. Box 7955 Casablanca Morocco
| | - A Derouiche
- Laboratoire de Physique des Polymères et Phénomènes Critiques, Sciences Faculty Ben M'Sik, Hassan II University P.O. Box 7955 Casablanca Morocco
| | - H Ridouane
- Laboratoire de Physique des Polymères et Phénomènes Critiques, Sciences Faculty Ben M'Sik, Hassan II University P.O. Box 7955 Casablanca Morocco
| |
Collapse
|
5
|
Benhamou M, Kaidi H, Hachem EK. Effective pair-potentials between droplets with end-grafted polymers within Pickering emulsions versus grafting-density, solvent quality and monomer concentration and phase diagrams architectures. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
6
|
Hadrioui N, Lemaalem M, Derouiche A, Ridouane H. Physical properties of phospholipids and integral proteins and their biofunctional roles in pulmonary surfactant from molecular dynamics simulation. RSC Adv 2020; 10:8568-8579. [PMID: 35497816 PMCID: PMC9049990 DOI: 10.1039/d0ra00077a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 02/06/2020] [Indexed: 12/26/2022] Open
Abstract
This work deals with a quantitative investigation of the physical properties of pulmonary surfactant near melting temperature. To this end, we make use of molecular dynamics simulations, using the MARTINI coarse-grained model, for determining the physical properties of the system, such as the potential energy, the specific heat, the microstructure, the diffusion laws, and the elastic properties of the surfactant. The microstructure is studied by computation of the radial-distribution-function upon varying the distance between constituents (lipid molecules or proteins). The diffusion phenomenon is investigated by determination of the mean-squared-displacement and the time dependent velocity-autocorrelation-function for various values of temperature. We show that the dynamics of lipids and proteins exhibit a subdiffusion regime (slow movement) due to the cage effect within pulmonary surfactant. From the obtained mean-squared-displacement, we get the values of the self-diffusion-coefficients and the anomalous exponents at different temperatures close to the melting temperature. For the mathematical description of the cage effect, we make use of the scale relations in terms of the waiting time probability distribution. The last study is concerned with determination of the dependence of the lateral stress upon the strain of pulmonary surfactant, which is found to be linear, and from which we deduce the lateral-elastic-modulus. This work deals with a quantitative investigation of the physical properties of pulmonary surfactant near melting temperature.![]()
Collapse
Affiliation(s)
- Nourddine Hadrioui
- Laboratoire de Physique des Polymères et Phénomènes Critiques Sciences Faculty Ben M'Sik, Hassan II University P.O. Box 7955 Casablanca Morocco
| | - Mohammed Lemaalem
- Laboratoire de Physique des Polymères et Phénomènes Critiques Sciences Faculty Ben M'Sik, Hassan II University P.O. Box 7955 Casablanca Morocco
| | - Abdelali Derouiche
- Laboratoire de Physique des Polymères et Phénomènes Critiques Sciences Faculty Ben M'Sik, Hassan II University P.O. Box 7955 Casablanca Morocco
| | - Hamid Ridouane
- Laboratoire de Physique des Polymères et Phénomènes Critiques Sciences Faculty Ben M'Sik, Hassan II University P.O. Box 7955 Casablanca Morocco
| |
Collapse
|
7
|
Gibaud T, Constantin D. Direct Liquid to Crystal Transition in a Quasi-Two-Dimensional Colloidal Membrane. J Phys Chem Lett 2018; 9:4302-4307. [PMID: 30004230 DOI: 10.1021/acs.jpclett.8b01524] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Using synchrotron-based small-angle X-ray scattering, we study rigid fd viruses assembled into isolated monolayers from mixtures with a nonabsorbing polymer, which acts as an osmotic agent. As the polymer concentration increases, we observe a direct liquid to crystal transition, without an intermediate hexatic phase, in contrast with many other similar systems, such as concentrated DNA phases or packings of surfactant micelles. We tentatively attribute this effect to the difference in stiffness. The liquid phase can be well described by a hard-disk fluid, while we model the crystalline one as a hexagonal harmonic lattice and we evaluate its elastic constants.
Collapse
Affiliation(s)
- Thomas Gibaud
- Univ. Lyon, Ens de Lyon, Univ. Claude Bernard, CNRS , Laboratoire de Physique , F-69342 Lyon , France
| | - Doru Constantin
- Laboratoire de Physique des Solides , CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France
| |
Collapse
|
8
|
Bories F, Constantin D, Galatola P, Fournier JB. Coupling between Inclusions and Membranes at the Nanoscale. PHYSICAL REVIEW LETTERS 2018; 120:128104. [PMID: 29694104 DOI: 10.1103/physrevlett.120.128104] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Indexed: 06/08/2023]
Abstract
The activity of cell membrane inclusions (such as ion channels) is influenced by the host lipid membrane, to which they are elastically coupled. This coupling concerns the hydrophobic thickness of the bilayer (imposed by the length of the channel, as per the hydrophobic matching principle) but also its slope at the boundary of the inclusion. However, this parameter has never been measured so far. We combine small-angle x-ray scattering data and a complete elastic model to measure the slope for the model gramicidin channel and show that it is surprisingly steep in two membrane systems with very different elastic properties. This conclusion is confirmed and generalized by the comparison with recent results in the simulation literature and with conductivity measurements.
Collapse
Affiliation(s)
- Florent Bories
- Laboratoire "Matière et Systèmes Complexes" (MSC), UMR 7057 CNRS, Université Paris 7 Diderot, 75205 Paris Cedex 13, France
| | - Doru Constantin
- Laboratoire de Physique des Solides, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France
| | - Paolo Galatola
- Laboratoire "Matière et Systèmes Complexes" (MSC), UMR 7057 CNRS, Université Paris 7 Diderot, 75205 Paris Cedex 13, France
| | - Jean-Baptiste Fournier
- Laboratoire "Matière et Systèmes Complexes" (MSC), UMR 7057 CNRS, Université Paris 7 Diderot, 75205 Paris Cedex 13, France
| |
Collapse
|
9
|
Benhamou M, Kaidi H, Hachem EK. Determination and classification of the effective potentials between nanoparticles and nanopores within bilayer-membranes versus their geometry and density. Experimental inspiration. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.08.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
10
|
Affiliation(s)
- Wen Li
- State Key Laboratory of Supramolecular Structure and Materials; Jilin University; Changchun 130012 China
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials; Jilin University; Changchun 130012 China
| |
Collapse
|
11
|
LamellarLαMesophases Doped with Inorganic Nanoparticles. Chemphyschem 2014; 15:1270-82. [DOI: 10.1002/cphc.201301187] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Indexed: 11/07/2022]
|
12
|
Antlanger M, Doppelbauer G, Mazars M, Kahl G. Crystal phases of soft spheres systems in a slab geometry. J Chem Phys 2014; 140:044507. [PMID: 25669555 DOI: 10.1063/1.4862499] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
We have identified the ground state configurations of soft particles (interacting via inverse power potentials) confined between two hard, impenetrable walls. To this end we have used a highly reliable optimization scheme at vanishing temperature while varying the wall separation over a representative range. Apart from the expected layered triangular and square structures (which are compatible with the three-dimensional bulk fcc lattice), we have identified a cascade of highly complex intermediate structures. Taking benefit of the general scaling properties of inverse power potentials, we could identify - for a given softness value - one single master curve which relates the energy to the wall separation, irrespective of the density of the system. Via extensive Monte Carlo simulations, we have performed closer investigations of these intermediate structures at finite temperature: we could provide evidence to which extent these particle arrangements remain stable over a relatively large temperature range.
Collapse
Affiliation(s)
- Moritz Antlanger
- Institut für Theoretische Physik and Center for Computational Materials Science (CMS), Technische Universität Wien, Wiedner Hauptstraße 8-10, A-1040 Wien, Austria
| | - Günther Doppelbauer
- Institut für Theoretische Physik and Center for Computational Materials Science (CMS), Technische Universität Wien, Wiedner Hauptstraße 8-10, A-1040 Wien, Austria
| | - Martial Mazars
- Laboratoire de Physique Théorique (UMR 8627), Université de Paris-Sud and CNRS, Bâtiment 210, F-91405 Orsay Cedex, France
| | - Gerhard Kahl
- Institut für Theoretische Physik and Center for Computational Materials Science (CMS), Technische Universität Wien, Wiedner Hauptstraße 8-10, A-1040 Wien, Austria
| |
Collapse
|
13
|
Constantin D. The interaction of hybrid nanoparticles inserted within surfactant bilayers. J Chem Phys 2010; 133:144901. [PMID: 20950035 DOI: 10.1063/1.3499741] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We determine by small-angle x-ray scattering the structure factor of hydrophobic particles inserted within lamellar surfactant phases for various particle concentrations. The data are then analyzed by numerically solving the Ornstein-Zernicke equation, taking into account both the intra- and interlayer interactions. We find that particles within the same layer repel each other and that the interaction potential (taken as independent of the concentration) has a contact value of 2.2k(B)T and a range of about 10 Å. If the amplitude is allowed to decrease with increasing concentration, the contact value in the dilute limit is about 5k(B)T for a similar range.
Collapse
Affiliation(s)
- Doru Constantin
- Laboratoire de Physique des Solides, Université Paris-Sud, CNRS, UMR 8502, 91405 Orsay, France.
| |
Collapse
|
14
|
Binks B, Fletcher P, Tian L. Influence of nanoparticle addition to Winsor surfactant microemulsion systems. Colloids Surf A Physicochem Eng Asp 2010. [DOI: 10.1016/j.colsurfa.2010.03.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
15
|
Liang Q, Chen QH, Ma YQ. Membrane-Mediated Interactions between Nanoparticles on a Substrate. J Phys Chem B 2010; 114:5359-64. [DOI: 10.1021/jp910852d] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Qing Liang
- Center for Statistical and Theoretical Condensed Matter Physics, Zhejiang Normal University, Jinhua 321004, People’s Republic of China, Department of Physics, Zhejiang University, Hangzhou 310027, People’s Republic of China, and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, People’s Republic of China
| | - Qing-Hu Chen
- Center for Statistical and Theoretical Condensed Matter Physics, Zhejiang Normal University, Jinhua 321004, People’s Republic of China, Department of Physics, Zhejiang University, Hangzhou 310027, People’s Republic of China, and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, People’s Republic of China
| | - Yu-qiang Ma
- Center for Statistical and Theoretical Condensed Matter Physics, Zhejiang Normal University, Jinhua 321004, People’s Republic of China, Department of Physics, Zhejiang University, Hangzhou 310027, People’s Republic of China, and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, People’s Republic of China
| |
Collapse
|
16
|
Membrane-mediated repulsion between gramicidin pores. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2009; 1788:1782-9. [PMID: 19464257 DOI: 10.1016/j.bbamem.2009.05.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Revised: 05/06/2009] [Accepted: 05/12/2009] [Indexed: 11/22/2022]
Abstract
We investigated the X-ray scattering signal of highly aligned multilayers of the zwitterionic lipid 1,2-dilauroyl-sn-glycero-3-phosphatidylcholine containing pores formed by the antimicrobial peptide gramicidin as a function of the peptide/lipid ratio. We are able to obtain information on the structure factor of the pore fluid, which then yields the interaction potential between pores in the plane of the bilayers. Aside from a hard core with a radius close to the geometric radius of the pore, we find a repulsive exponential lipid-mediated interaction with a decay length of 2.5 A and an amplitude that decreases with the pore concentration, in agreement with the hydrophobic matching hypothesis. In dilute systems, the contact value of this interaction is about 30 k(B)T. Similar results are obtained for gramicidin pores inserted within bilayers formed by the nonionic surfactant pentaethylene glycol monododecyl ether.
Collapse
|