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Shape transformation of lipid vesicles induced by diffusing macromolecules
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10.1063/1.3530069
/content/aip/journal/jcp/134/2/10.1063/1.3530069
http://aip.metastore.ingenta.com/content/aip/journal/jcp/134/2/10.1063/1.3530069
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic illustration of the parameterization of the vesicle shape. a is the surface area of the vesicle, measured from the pole to some tangent point. θ(a) is the angle of the tangent to the shape profile with the line parallel to r-axis.

Image of FIG. 2.
FIG. 2.

Cylindrical protrusions created in the vesicles of the reduced volume v = 0.3 (the five profiles on the left side) and v = 0.4 (the five profiles on the right side). The black color shows the region occupied by the macromolecules. The first profile for each volume represents vesicle with the spontaneous curvature . The remaining four profiles represent the vesicles with nonuniform distribution of the spontaneous curvature given by Eq. (9) with parameters ξ = 50, and –(a), (e); –(b), (f); –(c), (g); –(d), (h), respectively. The vesicles have up-down symmetry. Only the upper halves of the profiles are presented. The bending rigidity and Gaussian rigidity are the same for each component , .

Image of FIG. 3.
FIG. 3.

The shape profiles and corresponding distribution of the macromolecules ϕ(t, a) after (a) 1, (b) 11, (c) 51, (d) 121, (e) 181, (f) 241, (g) 400 time steps for the vesicle with the reduced volume v = 0.3. The gray color shows the concentration of the components according to the colormap shown as a vertical cylinder above the vesicles. The total concentration of the macromolecules . The time step dt = 0.01. The elastic constants are the same for all components of the membrane , .

Image of FIG. 4.
FIG. 4.

The shape profiles and corresponding distribution of the macromolecules ϕ(t, a) after (a) 1, (b) 11, (c) 51, (d) 121, (e) 181, (f) 241, (g) 400 time steps for the vesicle with the reduced volume v = 0.3. The gray color shows the concentration of the components. The total concentration of the macromolecules . The time step dt = 0.01. The elastic constants are the same for all components of the membrane , .

Image of FIG. 5.
FIG. 5.

The shape profiles and corresponding distribution of the macromolecules ϕ(t, a) after (a) 1, (b) 11, (c) 51, (d) 121, (e) 181, (f) 241, (g) 400 time steps for the vesicle with the reduced volume v = 0.3. The gray color shows the concentration of the components. The total concentration of the macromolecules . The time step dt = 0.01. The ratio of elastic constants .

Image of FIG. 6.
FIG. 6.

The shape profiles and corresponding distribution of the macromolecules ϕ(t, a) after (a) 1, (b) 11, (c) 51, (d) 121, (e) 181, (f) 241, (g) 400 time steps for the vesicle with the reduced volume v = 0.3. The gray color shows the concentration of the components. The total concentration of the macromolecules . The time step dt = 0.01. The ratio of elastic constants .

Image of FIG. 7.
FIG. 7.

The change of the vesicle height h(0) − h(t) in time for the vesicles with the reduced volume v = 0.3 and different values of the elastic constants: (a) —solid line, (b) —dashed line, (c) —dashed-dotted line. The total concentration of the macromolecules . The time step dt = 0.01.

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/content/aip/journal/jcp/134/2/10.1063/1.3530069
2011-01-11
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Shape transformation of lipid vesicles induced by diffusing macromolecules
http://aip.metastore.ingenta.com/content/aip/journal/jcp/134/2/10.1063/1.3530069
10.1063/1.3530069
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