Entropy provides an unexpected shield in photosynthesis

Vascular plants combat the excess photon bombarding of high-light conditions with several protective mechanisms. Despite decades of extensive research, new regulatory mech-anisms for photoprotection may remain unknown. Kim et al. now report that the monomeric disordered form of photosystem II (PSII)...

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Bibliographic Details
Published inThe Journal of biological chemistry Vol. 295; no. 43; pp. 14546 - 14547
Main Author Tian, Lijin
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 23.10.2020
American Society for Biochemistry and Molecular Biology
Subjects
Arabidopsis - metabolism
Editors' Picks Highlights
Entropy
Light
Photosynthesis
Photosystem II Protein Complex - metabolism
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Summary:Vascular plants combat the excess photon bombarding of high-light conditions with several protective mechanisms. Despite decades of extensive research, new regulatory mech-anisms for photoprotection may remain unknown. Kim et al. now report that the monomeric disordered form of photosystem II (PSII), which is present in higher abundance in the native thylakoid membrane in response to high light, possesses an energy-quenching capability superior to that of the multimeric ordered phase, suggesting a new shielding strategy against high-light stress by altering the macro-organization of PSII supercomplexes.
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Edited by Joseph M. Jez
ISSN:0021-9258
1083-351X
DOI:10.1074/jbc.H120.016039