Interaction of Ordered Lipid Domain Boundaries and Amphipathic Peptides Regulates Probability of Pore Formation in Membranes

2020 ◽  
Vol 14 (4) ◽  
pp. 319-330
Author(s):  
K. V. Pinigin ◽  
M. V. Volovik ◽  
O. V. Batishchev ◽  
S. A. Akimov
Keyword(s):  
Pore Formation ◽  
Amphipathic Peptides ◽  
Lipid Domain ◽  
Domain Boundaries

Nanoscale structure of lipid domain boundaries

Soft Matter ◽  
2010 ◽  
Vol 6 (10) ◽  
pp. 2193 ◽  
Author(s):  
Matthew R. Nussio ◽  
Rachel D. Lowe ◽  
Nicolas H. Voelcker ◽  
Benjamin S. Flavel ◽  
Christopher T. Gibson ◽  
...  
Keyword(s):  
Lipid Domain ◽  
Domain Boundaries ◽  
Nanoscale Structure

Perturbation of a lipid membrane by amphipathic peptides and its role in pore formation

2004 ◽  
Vol 34 (3) ◽  
pp. 230-242 ◽  
Author(s):  
Assaf Zemel ◽  
Avinoam Ben-Shaul ◽  
Sylvio May
Keyword(s):  
Pore Formation ◽  
Lipid Membrane ◽  
Amphipathic Peptides

scholarly journals Mechanism and kinetics of pore formation in membranes by water-soluble amphipathic peptides

2008 ◽  
Vol 105 (13) ◽  
pp. 5087-5092 ◽  
Author(s):  
Ming-Tao Lee ◽  
Wei-Chin Hung ◽  
Fang-Yu Chen ◽  
Huey W. Huang
Keyword(s):  
Pore Formation ◽  
Water Soluble ◽  
Amphipathic Peptides ◽  
Mechanism And Kinetics ◽  
Kinetics Of

scholarly journals Membrane pore-formation correlates with the hydrophilic angle of histidine-rich amphipathic peptides with multiple biological activities

2020 ◽  
Vol 1862 (8) ◽  
pp. 183212 ◽  
Author(s):  
Morane Lointier ◽  
Christopher Aisenbrey ◽  
Arnaud Marquette ◽  
Jia Hao Tan ◽  
Antoine Kichler ◽  
...  
Keyword(s):  
Pore Formation ◽  
Biological Activities ◽  
Membrane Pore ◽  
Amphipathic Peptides

Domain Formation in Synthetic Quartz

1971 ◽  
Vol 29 ◽  
pp. 156-157
Author(s):  
Joseph J. Comer
Keyword(s):  
Electron Beam ◽  
Room Temperature ◽  
Domain Formation ◽  
Synthetic Quartz ◽  
Transmission Electron ◽  
Black Spots ◽  
Diffraction Mode ◽  
Domain Boundaries ◽  
Kikuchi Lines ◽  
Straight Lines

Domains visible by transmission electron microscopy, believed to be Dauphiné inversion twins, were found in some specimens of synthetic quartz heated to 680°C and cooled to room temperature. With the electron beam close to parallel to the [0001] direction the domain boundaries appeared as straight lines normal to <100> and <410> or <510> directions. In the selected area diffraction mode, a shift of the Kikuchi lines was observed when the electron beam was made to traverse the specimen across a boundary. This shift indicates a change in orientation which accounts for the visibility of the domain by diffraction contrast when the specimen is tilted. Upon exposure to a 100 KV electron beam with a flux of 5x 1018 electrons/cm2sec the boundaries are rapidly decorated by radiation damage centers appearing as black spots. Similar crystallographio boundaries were sometimes found in unannealed (0001) quartz damaged by electrons.

Nucleation of Disorder in Fe3Al Alloys

1967 ◽  
Vol 25 ◽  
pp. 312-313
Author(s):  
P. R. Swann ◽  
W. R. Duff ◽  
R. M. Fisher
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Annealing Temperature ◽  
Antiphase Domain ◽  
Effect Of Temperature ◽  
Domain Structures ◽  
Transmission Electron ◽  
Domain Boundaries ◽  
Higher Temperature ◽  
The One

Recently we have investigated the phase equilibria and antiphase domain structures of Fe-Al alloys containing from 18 to 50 at.% Al by transmission electron microscopy and Mössbauer techniques. This study has revealed that none of the published phase diagrams are correct, although the one proposed by Rimlinger agrees most closely with our results to be published separately. In this paper observations by transmission electron microscopy relating to the nucleation of disorder in Fe-24% Al will be described. Figure 1 shows the structure after heating this alloy to 776.6°C and quenching. The white areas are B2 micro-domains corresponding to regions of disorder which form at the annealing temperature and re-order during the quench. By examining specimens heated in a temperature gradient of 2°C/cm it is possible to determine the effect of temperature on the disordering reaction very precisely. It was found that disorder begins at existing antiphase domain boundaries but that at a slightly higher temperature (1°C) it also occurs by homogeneous nucleation within the domains. A small (∼ .01°C) further increase in temperature caused these micro-domains to completely fill the specimen.

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