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Jahns, P. et al.

Peter Jahns, Dariusz Latowski, Kazimierz Strzalka,

Mechanism and regulation of the violaxanthin cycle: the role of antenna proteins and membrane lipids.

The violaxanthin cycle describes the reversible conversion of violaxanthin to zeaxanthin via the intermediate antheraxanthin. This light-dependent xanthophyll conversion is essential for the adaptation of plants and algae to different light conditions and allows a reversible switch of photosynthetic light-harvesting complexes between a light-harvesting state under low light and a dissipative state under high light. The photoprotective functions of zeaxanthin have been intensively studied during the last decade, but much less attention has been directed to the mechanism and regulation of xanthophyll conversion. In this review, an overview is given on recent progress in the understanding of the role of (i) xanthophyll binding by antenna proteins and of (ii) the lipid properties of the thylakoid membrane in the regulation of xanthophyll conversion. The consequences of these findings for the mechanism and regulation of xanthophyll conversion in the thylakoid membrane will be discussed.[1]

References

Mechanism and regulation of the violaxanthin cycle: the role of antenna proteins and membrane lipids. Jahns, P., Latowski, D., Strzalka, K. Biochim. Biophys. Acta (2009) [Pubmed]

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