Localization and Orientation of Xanthophylls in a Lipid Bilayer.
Localization and Orientation of Xanthophylls in a Lipid Bilayer.
复制标题
脂质双层中的叶芽孢杆菌的定位和方向。
DOI:
10.1038/s41598-017-10183-7
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发表时间:
2017-08-29
影响因子:
4.6
通讯作者:
Gruszecki WI
中科院分区:
文献类型:
--
作者:
Grudzinski W;Nierzwicki L;Welc R;Reszczynska E;Luchowski R;Czub J;Gruszecki WI
Xanthophylls (polar carotenoids) play diverse biological roles, among which are modulation of the physical properties of lipid membranes and protection of biomembranes against oxidative damage. Molecular mechanisms underlying these functions are intimately related to the localization and orientation of xanthophyll molecules in lipid membranes. In the present work, we address the problem of localization and orientation of two xanthophylls present in the photosynthetic apparatus of plants and in the retina of the human eye, zeaxanthin and lutein, in a single lipid bilayer membrane formed with dimyristoylphosphatidylcholine. By using fluorescence microscopic analysis and Raman imaging of giant unilamellar vesicles, as well as molecular dynamics simulations, we show that lutein and zeaxanthin adopt a very similar transmembrane orientation within a lipid membrane. In experimental and computational approach, the average tilt angle of xanthophylls relative to the membrane normal is independently found to be ~40 deg, and results from hydrophobic mismatch between the membrane thickness and the distance between the terminal hydroxyl groups of the xanthophylls. Consequences of such a localization and orientation for biological activity of xanthophylls are discussed.
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影响因子:
4.6
作者:
Grudzinski W;Sagan J;Welc R;Luchowski R;Gruszecki WI
通讯作者:
Gruszecki WI
影响因子:
4.2
作者:
Kučerka N;Heberle FA;Pan J;Katsaras J
通讯作者:
Katsaras J
DOI:
10.1016/0005-2736(90)90133-9
发表时间:
1990-04-30
期刊:
BIOCHIMICA ET BIOPHYSICA ACTA
影响因子:
--
作者:
GRUSZECKI, WI;SIELEWIESIUK, J
通讯作者:
SIELEWIESIUK, J
影响因子:
4.4
作者:
FELLER, SE;ZHANG, YH;BROOKS, BR
通讯作者:
BROOKS, BR
影响因子:
4.4
作者:
JORGENSEN, WL;CHANDRASEKHAR, J;KLEIN, ML
通讯作者:
KLEIN, ML