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Identification and Roles of Photosystem II Assembly, Stability, and Repair Factors in Arabidopsis

Photosystem II (PSII) is a multi-component pigment-protein complex that is responsible for water splitting, oxygen evolution, and plastoquinone reduction. Components of PSII can be classified into core proteins, low-molecular-mass proteins, extrinsic oxygen-evolving complex (OEC) proteins, and light...

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Autor principal: Lu, Yan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4754418/
https://www.ncbi.nlm.nih.gov/pubmed/26909098
http://dx.doi.org/10.3389/fpls.2016.00168
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author Lu, Yan
author_facet Lu, Yan
author_sort Lu, Yan
collection PubMed
description Photosystem II (PSII) is a multi-component pigment-protein complex that is responsible for water splitting, oxygen evolution, and plastoquinone reduction. Components of PSII can be classified into core proteins, low-molecular-mass proteins, extrinsic oxygen-evolving complex (OEC) proteins, and light-harvesting complex II proteins. In addition to these PSII subunits, more than 60 auxiliary proteins, enzymes, or components of thylakoid protein trafficking/targeting systems have been discovered to be directly or indirectly involved in de novo assembly and/or the repair and reassembly cycle of PSII. For example, components of thylakoid-protein-targeting complexes and the chloroplast-vesicle-transport system were found to deliver PSII subunits to thylakoid membranes. Various auxiliary proteins, such as PsbP-like (Psb stands for PSII) and light-harvesting complex-like proteins, atypical short-chain dehydrogenase/reductase family proteins, and tetratricopeptide repeat proteins, were discovered to assist the de novo assembly and stability of PSII and the repair and reassembly cycle of PSII. Furthermore, a series of enzymes were discovered to catalyze important enzymatic steps, such as C-terminal processing of the D1 protein, thiol/disulfide-modulation, peptidylprolyl isomerization, phosphorylation and dephosphorylation of PSII core and antenna proteins, and degradation of photodamaged PSII proteins. This review focuses on the current knowledge of the identities and molecular functions of different types of proteins that influence the assembly, stability, and repair of PSII in the higher plant Arabidopsis thaliana.
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spelling pubmed-47544182016-02-23 Identification and Roles of Photosystem II Assembly, Stability, and Repair Factors in Arabidopsis Lu, Yan Front Plant Sci Plant Science Photosystem II (PSII) is a multi-component pigment-protein complex that is responsible for water splitting, oxygen evolution, and plastoquinone reduction. Components of PSII can be classified into core proteins, low-molecular-mass proteins, extrinsic oxygen-evolving complex (OEC) proteins, and light-harvesting complex II proteins. In addition to these PSII subunits, more than 60 auxiliary proteins, enzymes, or components of thylakoid protein trafficking/targeting systems have been discovered to be directly or indirectly involved in de novo assembly and/or the repair and reassembly cycle of PSII. For example, components of thylakoid-protein-targeting complexes and the chloroplast-vesicle-transport system were found to deliver PSII subunits to thylakoid membranes. Various auxiliary proteins, such as PsbP-like (Psb stands for PSII) and light-harvesting complex-like proteins, atypical short-chain dehydrogenase/reductase family proteins, and tetratricopeptide repeat proteins, were discovered to assist the de novo assembly and stability of PSII and the repair and reassembly cycle of PSII. Furthermore, a series of enzymes were discovered to catalyze important enzymatic steps, such as C-terminal processing of the D1 protein, thiol/disulfide-modulation, peptidylprolyl isomerization, phosphorylation and dephosphorylation of PSII core and antenna proteins, and degradation of photodamaged PSII proteins. This review focuses on the current knowledge of the identities and molecular functions of different types of proteins that influence the assembly, stability, and repair of PSII in the higher plant Arabidopsis thaliana. Frontiers Media S.A. 2016-02-16 /pmc/articles/PMC4754418/ /pubmed/26909098 http://dx.doi.org/10.3389/fpls.2016.00168 Text en Copyright © 2016 Lu. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Lu, Yan
Identification and Roles of Photosystem II Assembly, Stability, and Repair Factors in Arabidopsis
title Identification and Roles of Photosystem II Assembly, Stability, and Repair Factors in Arabidopsis
title_full Identification and Roles of Photosystem II Assembly, Stability, and Repair Factors in Arabidopsis
title_fullStr Identification and Roles of Photosystem II Assembly, Stability, and Repair Factors in Arabidopsis
title_full_unstemmed Identification and Roles of Photosystem II Assembly, Stability, and Repair Factors in Arabidopsis
title_short Identification and Roles of Photosystem II Assembly, Stability, and Repair Factors in Arabidopsis
title_sort identification and roles of photosystem ii assembly, stability, and repair factors in arabidopsis
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4754418/
https://www.ncbi.nlm.nih.gov/pubmed/26909098
http://dx.doi.org/10.3389/fpls.2016.00168
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