Unique structural attributes of the PSI-NDH supercomplex in Physcomitrium patens
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F24%3A73626979" target="_blank" >RIV/61989592:15310/24:73626979 - isvavai.cz</a>
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/epdf/10.1111/tpj.17116" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1111/tpj.17116</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/tpj.17116" target="_blank" >10.1111/tpj.17116</a>
Alternative languages
Result language
angličtina
Original language name
Unique structural attributes of the PSI-NDH supercomplex in Physcomitrium patens
Original language description
Cyclic electron transport around photosystem I (PSI) is essential for the protection of the photosynthetic apparatus in plants under diverse light conditions. This process is primarily mediated by Proton Gradient Regulation 5 protein/Proton Gradient Regulation 5-like photosynthetic phenotype 1 protein (PGR5/PGRL1) and NADH dehydrogenase-like complex (NDH). In angiosperms, NDH interacts with two PSI complexes through distinct monomeric antennae, LHCA5 and LHCA6, which is crucial for its higher stability under variable light conditions. This interaction represents an advanced evolutionary stage and offers limited insight into the origin of the PSI-NDH supercomplex in evolutionarily older organisms. In contrast, the moss Physcomitrium patens (Pp), which retains the lhca5 gene but lacks the lhca6, offers a glimpse into an earlier evolutionary stage of the PSI-NDH supercomplex. Here we present structural evidence of the Pp PSI-NDH supercomplex formation by single particle electron microscopy, demonstrating the unique ability of Pp to bind a single PSI in two different configurations. One configuration closely resembles the angiosperm model, whereas the other exhibits a novel PSI orientation, rotated clockwise. This structural flexibility in Pp is presumably enabled by the variable incorporation of LHCA5 within PSI and is indicative of an early evolutionary adaptation that allowed for greater diversity at the PSI-NDH interface. Our findings suggest that this variability was reduced as the structural complexity of the NDH complex increased in vascular plants, primarily angiosperms. This study not only clarifies the evolutionary development of PSI-NDH supercomplexes but also highlights the dynamic nature of the adaptive mechanisms of plant photosynthesis.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10610 - Biophysics
Result continuities
Project
<a href="/en/project/EH22_008%2F0004624" target="_blank" >EH22_008/0004624: PHOTOMACHINES - Photosynthetic cell redesign for high yields of therapeutic peptides</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
PLANT JOURNAL
ISSN
0960-7412
e-ISSN
1365-313X
Volume of the periodical
120
Issue of the periodical within the volume
5
Country of publishing house
GB - UNITED KINGDOM
Number of pages
12
Pages from-to
"2226 "- 2237
UT code for WoS article
001357311400001
EID of the result in the Scopus database
2-s2.0-85208095546