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Conservation of triplet-triplet energy transfer photoprotective pathways in fucoxanthin chlorophyll-binding proteins across algal lineages
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SYSNO ASEP 0583540 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Conservation of triplet-triplet energy transfer photoprotective pathways in fucoxanthin chlorophyll-binding proteins across algal lineages Author(s) Agostini, Alessandro (BC-A) RID, ORCID
Bína, David (BC-A) RID, ORCID
Carbonera, D. (IT)
Litvín, Radek (BC-A) RID, ORCIDNumber of authors 4 Article number 148935 Source Title Biochimica Et Biophysica Acta-Bioenergetics. - : Elsevier - ISSN 0005-2728
Roč. 1864, č. 2 (2023)Number of pages 10 s. Language eng - English Country NL - Netherlands Keywords light-harvesting complex ; emiliania-huxleyi prymnesiophyceae ; electron-paramagnetic-resonance ; diatom cyclotella-meneghiniana ; time-resolved epr ; photosynthetic antenna ; raman-spectroscopy ; Light-harvesting complex ; Carotenoid Subject RIV BO - Biophysics OECD category Biophysics R&D Projects GA20-01159S GA ČR - Czech Science Foundation (CSF) EF18_053/0016982 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support BC-A - RVO:60077344 UT WOS 000891850800004 EID SCOPUS 85142162865 DOI 10.1016/j.bbabio.2022.148935 Annotation Detailed information on the photo-generated triplet states of diatom and haptophyte Fucoxanthin Chlorophyllbinding Proteins (FCPs and E-FCPs, respectively) have been obtained from a combined spectroscopic investi-gation 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 monomer that has no equivalent in Light-Harvesting Complexes from the green lineage. Workplace Biology Centre (since 2006) Contact Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Year of Publishing 2024 Electronic address https://www.sciencedirect.com/science/article/pii/S0005272822004054?via%3Dihub
Number of the records: 1