Biomimetic monolayer films of digalactosyldiacylglycerol incorporating plastoquinone

Biochimica Et Biophysica Acta
Javier HoyoFausto Sanz

Abstract

The photosynthesis is the process used by plants and bacteria cells to convert inorganic matter in organic thanks to the light energy. This process consist on several steps, being one of them the electronic transport from the photosystem II to the cytochrome thanks to plastoquinone-9 (PQ). Here we prepare membranes that mimic the characteristics and composition of natural photosynthetic cell membranes and we characterize them in order to obtain the PQ molecules position in the membrane and their electrochemical behaviour. The selected galactolipid is digalactosyldiacylglycerol (DGDG) that represents the 30% of the thylakoid membrane lipid content. The results obtained are worthful for several science fields due to the relevance of galactolipids as anti-algal, anti-viral, anti-tumor and anti-inflammatory agents and the antioxidant and free radical scavenger properties of prenylquinones. Both pure components (DGDG and PQ) and the DGDG:PQ mixtures have been studied using surface pressure-area isotherms. These isotherms give information about the film stability and indicate the thermodynamic behaviour of the mixture and their physical state. The Langmuir-Blodgett (LB) film has been transferred forming a monolayer that mimics the bo...Continue Reading

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Jun 4, 2013·The Journal of Physical Chemistry. B·Javier HoyoFausto Sanz

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Citations

Feb 13, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Amanda QuirkIan J Burgess
Jun 19, 2016·Bioelectrochemistry·Javier HoyoJuan Torrent-Burgués
May 28, 2020·Frontiers in Bioengineering and Biotechnology·Javier HoyoTzanko Tzanov
Jun 18, 2017·The European Physical Journal. E, Soft Matter·Javier HoyoJuan Torrent-Burgués
Mar 24, 2021·ACS Applied Materials & Interfaces·A Gala MorenaTzanko Tzanov
Apr 29, 2015·The Journal of Physical Chemistry. B·Javier HoyoFausto Sanz

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