Gongadze Ekaterina, Mesarec Luka, Kralj Samo, Kralj-Iglič Veronika, Iglič Aleš
Laboratory of Physics, Faculty of Electrical Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia.
Condensed Matter Physics Department, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia.
Membranes (Basel). 2021 Oct 25;11(11):812. doi: 10.3390/membranes11110812.
Within a modified Langevin Poisson-Boltzmann model of electric double layers, we derived an analytical expression for osmotic pressure between two charged surfaces. The orientational ordering of the water dipoles as well as the space dependencies of electric potentials, electric fields, and osmotic pressure between two charged spheres were taken into account in the model. Thus, we were able to capture the interaction between the parent cell and connected daughter vesicle or the interactions between neighbouring beads in necklace-like membrane protrusions. The predicted repulsion between them can facilitate the topological antidefect-driven fission of membrane daughter vesicles and the fission of beads of undulated membrane protrusions.
在双电层的修正朗之万泊松 - 玻尔兹曼模型中，我们推导出了两个带电表面之间渗透压的解析表达式。该模型考虑了水偶极子的取向有序性以及两个带电球体之间电势、电场和渗透压的空间依赖性。因此，我们能够捕捉母细胞与相连子囊泡之间的相互作用，或者项链状膜突起中相邻珠子之间的相互作用。预测它们之间的排斥力可以促进膜子囊泡的拓扑反缺陷驱动裂变以及起伏膜突起中珠子的裂变。
