scholarly journals Enhanced water permeability across a physiological droplet interface bilayer doped with fullerenes

RSC Advances ◽  
2020 ◽  
Vol 10 (33) ◽  
pp. 19686-19692
Author(s):  
Jean-Baptiste Fleury
Keyword(s):  
Lipid Bilayer ◽  
Water Permeability ◽  
Droplet Interface Bilayer

We measure the water permeability across a physiological lipid bilayer produced by the droplet interface bilayer technique.

scholarly journals The water permeability of lens aquaporin-0 depends on its lipid bilayer environment

2013 ◽  
Vol 113 ◽  
pp. 32-40 ◽  
Author(s):  
Jihong Tong ◽  
John T. Canty ◽  
Margaret M. Briggs ◽  
Thomas J. McIntosh
Keyword(s):  
Lipid Bilayer ◽  
Water Permeability

scholarly journals Effects of Ether vs. Ester Linkage on Lipid Bilayer Structure and Water Permeability

2009 ◽  
Vol 96 (3) ◽  
pp. 461a
Author(s):  
Deren Guler ◽  
Dipon Ghosh ◽  
Jianjun Pan ◽  
John F. Nagle ◽  
John C. Mathai ◽  
...  
Keyword(s):  
Lipid Bilayer ◽  
Water Permeability ◽  
Bilayer Structure ◽  
Ester Linkage

Mercury increases water permeability of a plant aquaporin through a non-cysteine-related mechanism

2013 ◽  
Vol 454 (3) ◽  
pp. 491-499 ◽  
Author(s):  
Anna Frick ◽  
Michael Järvå ◽  
Mikael Ekvall ◽  
Povilas Uzdavinys ◽  
Maria Nyblom ◽  
...  
Keyword(s):  
Plasma Membrane ◽  
Membrane Proteins ◽  
Lipid Bilayer ◽  
Water Transport ◽  
Water Permeability ◽  
Environmental Changes ◽  
Spinacia Oleracea ◽  
Cysteine Residues ◽  
Plasma Membrane Intrinsic Protein ◽  
Plant Plasma Membrane

Water transport across cellular membranes is mediated by a family of membrane proteins known as AQPs (aquaporins). AQPs were first discovered on the basis of their ability to be inhibited by mercurial compounds, an experiment which has followed the AQP field ever since. Although mercury inhibition is most common, many AQPs are mercury insensitive. In plants, regulation of AQPs is important in order to cope with environmental changes. Plant plasma membrane AQPs are known to be gated by phosphorylation, pH and Ca2+. We have previously solved the structure of the spinach AQP SoPIP2;1 (Spinacia oleracea plasma membrane intrinsic protein 2;1) in closed and open conformations and proposed a mechanism for how this gating can be achieved. To study the effect of mercury on SoPIP2;1 we solved the structure of the SoPIP2;1–mercury complex and characterized the water transport ability using proteoliposomes. The structure revealed mercury binding to three out of four cysteine residues. In contrast to what is normally seen for AQPs, mercury increased the water transport rate of SoPIP2;1, an effect which could not be attributed to any of the cysteine residues. This indicates that other factors might influence the effect of mercury on SoPIP2;1, one of which could be the properties of the lipid bilayer.

scholarly journals Effects of ether vs. ester linkage on lipid bilayer structure and water permeability

2009 ◽  
Vol 160 (1) ◽  
pp. 33-44 ◽  
Author(s):  
S. Deren Guler ◽  
D. Dipon Ghosh ◽  
Jianjun Pan ◽  
John C. Mathai ◽  
Mark L. Zeidel ◽  
...  
Keyword(s):  
Lipid Bilayer ◽  
Water Permeability ◽  
Bilayer Structure ◽  
Ester Linkage

scholarly journals The Water Permeability and Pore Entrance Structure of Aquaporin-4 Depend on Lipid Bilayer Thickness

2016 ◽  
Vol 111 (1) ◽  
pp. 90-99 ◽  
Author(s):  
Jihong Tong ◽  
Zhe Wu ◽  
Margaret M. Briggs ◽  
Klaus Schulten ◽  
Thomas J. McIntosh
Keyword(s):  
Lipid Bilayer ◽  
Water Permeability ◽  
Aquaporin 4 ◽  
Bilayer Thickness

Quantitative Raman microspectroscopy for water permeability parameters at a droplet interface bilayer

The Analyst ◽  
2018 ◽  
Vol 143 (3) ◽  
pp. 747-755 ◽  
Author(s):  
S. Braziel ◽  
K. Sullivan ◽  
S. Lee
Keyword(s):  
Water Transport ◽  
Water Permeability ◽  
Raman Microspectroscopy ◽  
Droplet Interface Bilayer ◽  
Confocal Raman Microspectroscopy ◽  
Confocal Raman ◽  
Aqueous Droplet

Using confocal Raman microspectroscopy, we derive parameters for bilayer water transport across an isolated nanoliter aqueous droplet pair.

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