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Conservation of Triplet-triplet Energy Transfer Photoprotective Pathways in Fucoxanthin Chlorophyll-binding Proteins Across Algal Lineages by Alessandro Agostini; David Bína; Donatella Carbonera; Radek Litvín is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is Conservation of Triplet-triplet Energy Transfer Photoprotective Pathways in Fucoxanthin Chlorophyll-binding Proteins Across Algal Lineages about?

Detailed information on the photo-generated triplet states of diatom and haptophyte Fucoxanthin Chlorophyll-binding Proteins (FCPs and E-FCPs, respectively) have been obtained from a combined spectroscopic investigation involving Transient Absorption and Time-Resolved Electron Paramagnetic Resonance. Pennate diatom Phaeodactylum tricornutum FCP shows identical photoprotective Triplet-Triplet Energy Transfer (TTET) pathways to the previously investigated centric diatom Cyclotella meneghiniana FCP, with the same two chlorophyll a-fucoxanthin pairs that involve the fucoxanthins in sites Fx301 and Fx302 contributing to TTET in both diatom groups. In the case of the haptophyte Emilianina huxleyi E-FCP, only one of the two chlorophyll a-fucoxanthins pairs observed in diatoms, the one involving chlorophyll a409 and Fx301, has been shown to be active in TTET. Furthermore, despite the marked change in the pigment content of E-FCP with growth light intensity, the TTET pathway is not affected. Thus, our comparative investigation of FCPs revealed a photoprotective TTET pathway shared within these classes involving the fucoxanthin in site Fx301, a site exposed to the exterior of the antenna mon

Who reads Conservation of Triplet-triplet Energy Transfer Photoprotective Pathways in Fucoxanthin Chlorophyll-binding Proteins Across Algal Lineages?

Author

Alessandro Agostini; David Bína; Donatella Carbonera; Radek Litvín

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)