Remodeling of algal photosystem I through phosphorylation
Open Access
- 24 January 2023
- journal article
- research article
- Published by Portland Press Ltd. in Bioscience Reports
- Vol. 43 (1)
- https://doi.org/10.1042/bsr20220369
Abstract
Photosystem I (PSI) with its associated light-harvesting system is the most important generator of reducing power in photosynthesis. The PSI core complex is highly conserved, whereas peripheral subunits as well as light-harvesting proteins (LHCI) reveal a dynamic plasticity. Moreover, in green alga, PSI-LHCI complexes are found as monomers, dimers and state transition complexes, where two LHCII trimers are associated. Herein, we show light-dependent phosphorylation of PSI subunits PsaG and PsaH as well as Lhca6. Potential consequences of the dynamic phosphorylation of PsaG and PsaH are structurally analyzed and discussed in regard to the formation of the monomeric, dimeric and LHCII associated PSI-LHCI complexes.Keywords
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