New Structural and Mechanistic Insights Into Functional Roles of Cytochrome b559 in Photosystem II
Cytochrome (Cyt) b559 is a key component of the photosystem II (PSII) complex for its assembly and proper function. Previous studies have suggested that Cytb559 has functional roles in early assembly of PSII and in secondary electron transfer pathways that protect PSII against photoinhibition. In ad...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2022-06-01
|
| Series: | Frontiers in Plant Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2022.914922/full |
| _version_ | 1811345258370301952 |
|---|---|
| author | Yi-Fang Chiu Hsiu-An Chu |
| author_facet | Yi-Fang Chiu Hsiu-An Chu |
| author_sort | Yi-Fang Chiu |
| collection | DOAJ |
| description | Cytochrome (Cyt) b559 is a key component of the photosystem II (PSII) complex for its assembly and proper function. Previous studies have suggested that Cytb559 has functional roles in early assembly of PSII and in secondary electron transfer pathways that protect PSII against photoinhibition. In addition, the Cytb559 in various PSII preparations exhibited multiple different redox potential forms. However, the precise functional roles of Cytb559 in PSII remain unclear. Recent site-directed mutagenesis studies combined with functional genomics and biochemical analysis, as well as high-resolution x-ray crystallography and cryo-electron microscopy studies on native, inactive, and assembly intermediates of PSII have provided important new structural and mechanistic insights into the functional roles of Cytb559. This mini-review gives an overview of new exciting results and their significance for understanding the structural and functional roles of Cytb559 in PSII. |
| first_indexed | 2024-04-13T20:00:34Z |
| format | Article |
| id | doaj.art-8b31d14db20f4398999c66745b821736 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-04-13T20:00:34Z |
| publishDate | 2022-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-8b31d14db20f4398999c66745b8217362022-12-22T02:32:13ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2022-06-011310.3389/fpls.2022.914922914922New Structural and Mechanistic Insights Into Functional Roles of Cytochrome b559 in Photosystem IIYi-Fang ChiuHsiu-An ChuCytochrome (Cyt) b559 is a key component of the photosystem II (PSII) complex for its assembly and proper function. Previous studies have suggested that Cytb559 has functional roles in early assembly of PSII and in secondary electron transfer pathways that protect PSII against photoinhibition. In addition, the Cytb559 in various PSII preparations exhibited multiple different redox potential forms. However, the precise functional roles of Cytb559 in PSII remain unclear. Recent site-directed mutagenesis studies combined with functional genomics and biochemical analysis, as well as high-resolution x-ray crystallography and cryo-electron microscopy studies on native, inactive, and assembly intermediates of PSII have provided important new structural and mechanistic insights into the functional roles of Cytb559. This mini-review gives an overview of new exciting results and their significance for understanding the structural and functional roles of Cytb559 in PSII.https://www.frontiersin.org/articles/10.3389/fpls.2022.914922/fullphotosynthesisphotosystem IIcytochrome b559site-directed mutagenesisphotoprotectionphotoinhibition |
| spellingShingle | Yi-Fang Chiu Hsiu-An Chu New Structural and Mechanistic Insights Into Functional Roles of Cytochrome b559 in Photosystem II Frontiers in Plant Science photosynthesis photosystem II cytochrome b559 site-directed mutagenesis photoprotection photoinhibition |
| title | New Structural and Mechanistic Insights Into Functional Roles of Cytochrome b559 in Photosystem II |
| title_full | New Structural and Mechanistic Insights Into Functional Roles of Cytochrome b559 in Photosystem II |
| title_fullStr | New Structural and Mechanistic Insights Into Functional Roles of Cytochrome b559 in Photosystem II |
| title_full_unstemmed | New Structural and Mechanistic Insights Into Functional Roles of Cytochrome b559 in Photosystem II |
| title_short | New Structural and Mechanistic Insights Into Functional Roles of Cytochrome b559 in Photosystem II |
| title_sort | new structural and mechanistic insights into functional roles of cytochrome b559 in photosystem ii |
| topic | photosynthesis photosystem II cytochrome b559 site-directed mutagenesis photoprotection photoinhibition |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2022.914922/full |
| work_keys_str_mv | AT yifangchiu newstructuralandmechanisticinsightsintofunctionalrolesofcytochromeb559inphotosystemii AT hsiuanchu newstructuralandmechanisticinsightsintofunctionalrolesofcytochromeb559inphotosystemii |