Eustigmatophyte model of red-shifted chlorophyll a absorption in light-harvesting complexes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F24%3A00604287" target="_blank" >RIV/60077344:_____/24:00604287 - isvavai.cz</a>
Alternative codes found
RIV/60076658:12310/24:43908629 RIV/61988987:17310/24:A25039N5
Result on the web
<a href="https://www.nature.com/articles/s42003-024-07101-9" target="_blank" >https://www.nature.com/articles/s42003-024-07101-9</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s42003-024-07101-9" target="_blank" >10.1038/s42003-024-07101-9</a>

Result language
angličtina
Original language name
Eustigmatophyte model of red-shifted chlorophyll a absorption in light-harvesting complexes
Original language description
Photosynthetic organisms harvest light for energy. Some eukaryotic algae have specialized in harvesting far-red light by tuning chlorophyll a absorption through a mechanism still to be elucidated. Here, we combined optically detected magnetic resonance and pulsed electron paramagnetic resonance measurements on red-adapted light-harvesting complexes, rVCP, isolated from the freshwater eustigmatophyte alga Trachydiscus minutus to identify the location of the pigments responsible for this remarkable adaptation. The pigments have been found to belong to an excitonic cluster of chlorophylls a at the core of the complex, close to the central carotenoids in L1/L2 sites. A pair of structural features of the Chl a403/a603 binding site, namely the histidine-to-asparagine substitution in the magnesium-ligation residue and the small size of the amino acid at the i-4 position, resulting in a [A/G]xxxN motif, are proposed to be the origin of this trait. Phylogenetic analysis of various eukaryotic red antennae identified several potential LHCs that could share this tuning mechanism. This knowledge of the red light acclimation mechanism in algae is a step towards rational design of algal strains in order to enhance light capture and efficiency in large-scale biotechnology applications.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10610 - Biophysics

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)