The Photoprotective Protein PsbS from Green Microalga
Chlorophyta
molecular dynamics (MDs) simulation
photoprotective protein
protonation
thylakoid lumen pH
Journal
International journal of molecular sciences
ISSN: 1422-0067
Titre abrégé: Int J Mol Sci
Pays: Switzerland
ID NLM: 101092791
Informations de publication
Date de publication:
11 Oct 2023
11 Oct 2023
Historique:
received:
24
08
2023
revised:
04
10
2023
accepted:
09
10
2023
medline:
30
10
2023
pubmed:
28
10
2023
entrez:
28
10
2023
Statut:
epublish
Résumé
PsbS is one of the key photoprotective proteins, ensuring the tolerance of the photosynthetic apparatus (PSA) of a plant to abrupt changes in irradiance. Being a component of photosystem II, it provides the formation of quenching centers for excited states of chlorophyll in the photosynthetic antenna with an excess of light energy. The signal for "turning on" the photoprotective function of the protein is an excessive decrease in pH in the thylakoid lumen occurring when all the absorbed light energy (stored in the form of transmembrane proton potential) cannot be used for carbon assimilation. Hence, lumen-exposed protonatable amino acid residues that could serve as pH sensors are the essential components of PsbS-dependent photoprotection, and their pK
Identifiants
pubmed: 37894741
pii: ijms242015060
doi: 10.3390/ijms242015060
pmc: PMC10606523
pii:
doi:
Substances chimiques
Photosystem II Protein Complex
0
Glutamates
0
Light-Harvesting Protein Complexes
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Russian Science Foundation
ID : 22-24-00323
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