The effect of bacterial signal indole on the electrical properties of lipid membranes.

The effect of bacterial signal indole on the electrical properties of lipid membranes.
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DOI:
10.1002/cphc.201200793
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发表时间:
2013-02-04
期刊:
Chemphyschem : a European journal of chemical physics and physical chemistry
影响因子:
--
通讯作者:
Keyser UF
Keyser UF
中科院分区:
其他
文献类型:
--
作者:
Chimerel C;Murray AJ;Oldewurtel ER;Summers DK;Keyser UF

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Indole is an important biological signalling molecule produced by many Gram positive and Gram negative bacterial species, including Escherichia coli. Here we study the effect of indole on the electrical properties of lipid membranes. Using electrophysiology, we show that two indole molecules act cooperatively to transport charge across the hydrophobic core of the lipid membrane. To enhance charge transport, induced by indole across the lipid membrane, we use an indole derivative, 4 fluoro-indole. We demonstrate parallels between charge transport through artificial lipid membranes and the function of complex eukaryotic membrane systems by showing that physiological indole concentrations increase the rate of mitochondrial oxygen consumption. Our data provide a biophysical explanation for how indole may link the metabolism of bacterial and eukaryotic cells.
DOI: 10.1016/j.bbamem.2012.02.022
发表时间: 2012-07
影响因子: 3.4
作者:
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