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A refined model of water and CO2 membrane diffusion: Effects and contribution of sterols and proteins.

Kai, Lei and Kaldenhoff, Ralf (2014):
A refined model of water and CO2 membrane diffusion: Effects and contribution of sterols and proteins.
In: Scientific reports, p. 6665, 4, ISSN 2045-2322,
[Article]

Abstract

Black lipid bilayers, a general model system for biomembranes were studied for diffusion rates of small molecules such as water or CO2 using advanced analysis techniques and cell free synthesized proteins. We provide evidence that by simple insertion of proteins or sterols the diffusion rates of water or those of CO2 decrease. Insertion of cell free synthesized water permeable aquaporins restored water diffusion rates as well as insertion of CO2-facilitating aquaporins the CO2 diffusion. Insertion of water or CO2 impermeable proteins decreased the respective diffusion rates. Therefore, for normal high cellular CO2 diffusion rates specific aquaporins are mandatory.

Item Type: Article
Erschienen: 2014
Creators: Kai, Lei and Kaldenhoff, Ralf
Title: A refined model of water and CO2 membrane diffusion: Effects and contribution of sterols and proteins.
Language: English
Abstract:

Black lipid bilayers, a general model system for biomembranes were studied for diffusion rates of small molecules such as water or CO2 using advanced analysis techniques and cell free synthesized proteins. We provide evidence that by simple insertion of proteins or sterols the diffusion rates of water or those of CO2 decrease. Insertion of cell free synthesized water permeable aquaporins restored water diffusion rates as well as insertion of CO2-facilitating aquaporins the CO2 diffusion. Insertion of water or CO2 impermeable proteins decreased the respective diffusion rates. Therefore, for normal high cellular CO2 diffusion rates specific aquaporins are mandatory.

Journal or Publication Title: Scientific reports
Volume: 4
Divisions: 10 Department of Biology
10 Department of Biology > Applied Plant Sciences
Date Deposited: 30 Oct 2014 06:58
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