ArticleScientific reports2016
The N-terminal sequence of the extrinsic PsbP protein modulates the redox potential of Cyt b559 in photosystem II.
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 31 citations in OpenAlex.
- GWAS of Leaf Morphological and Chlorophyll-Related Traits Provides Genetic Resources for Improving Photosynthetic Traits in Sugarcane.Plants (Basel, Switzerland) · 2026Article
- Photosystem II: commonality and diversity with emphasis on the extrinsic subunits.Plant & cell physiology · 2025Review
- The phytochrome-interacting factor PIL13 enhances water use efficiency under fluctuating light and drought resilience in rice and soybean.Communications biology · 2025Article
- The lumenal domain of Cyt bPhotosynthesis research · 2025Article
- Binding and functions of the two chloride ions in the oxygen-evolving center of photosystem II.Photosynthesis research · 2022Review
- Macromolecular conformational changes in photosystem II: interaction between structure and function.Biophysical reviews · 2022Review
- D139N mutation of PsbP enhances the oxygen-evolving activity of photosystem II through stabilized binding of a chloride ion.PNAS nexus · 2022Article
- Intrinsic Photosensitivity of the Vulnerable SeagrassFrontiers in plant science · 2022Article
- An underlying mechanism of qE deficiency in marine angiosperm Zostera marina.Photosynthesis research · 2021Article
- The Main Structural and Functional Characteristics of Photosystem-II-Enriched Membranes Isolated from Wild Type andLife (Basel, Switzerland) · 2020Article
- The highly efficient NDH-dependent photosystem I cyclic electron flow pathway in the marine angiosperm Zostera marina.Photosynthesis research · 2020Article
- Comparative Proteomics Indicates That Redox Homeostasis Is Involved in High- and Low-Temperature Stress Tolerance in a Novel Wucai (International journal of molecular sciences · 2019Article
- Antimycin A inhibits cytochrome bPhotosynthesis research · 2019Article
- A novel role for PsbO1 in photosynthetic electron transport as suggested by its light-triggered selective nitration in Arabidopsis thaliana.Plant signaling & behavior · 2018Article
- Selective nitration of PsbO1, PsbO2, and PsbP1 decreases PSII oxygen evolution and photochemical efficiency in intact leaves of Arabidopsis.Plant signaling & behavior · 2017Article
- In vivo system for analyzing the function of the PsbP protein using Chlamydomonas reinhardtii.Photosynthesis research · 2017Article
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Authors and funding
6 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The PsbP protein, an extrinsic subunit of photosystem II (PSII) in green plants, is known to induce a conformational change around the catalytic Mn4CaO5 cluster securing the binding of Ca(2+) and Cl(-) in PSII. PsbP has multiple interactions with the membrane subunits of PSII, but how these affect the structure and function of PSII requires clarification. Here, we focus on the interactions between the N-terminal residues of PsbP and the α subunit of Cytochrome (Cyt) b559 (PsbE). A key observation was that a peptide fragment formed of the first N-terminal 15 residues of PsbP, 'pN15', was able to convert Cyt b559 into its HP form. Interestingly, addition of pN15 to NaCl-washed PSII membranes decreased PSII's oxygen-evolving activity, even in the presence of saturating Ca(2+) and Cl(-) ions. In fact, pN15 reversibly inhibited the S1 to S2 transition of the OEC in PSII. These data suggest that pN15 can modulate the redox property of Cyt b559 involved in the side-electron pathway in PSII. This potential change of Cyt b559, in the absence of the C-terminal domain of PsbP, however, would interfere with any electron donation from the Mn4CaO5 cluster, leading to the possibility that multiple interactions of PsbP, binding to PSII, have distinct roles in regulating electron transfer within PSII.
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