ArticleThe Plant cell2011
A small zinc finger thylakoid protein plays a role in maintenance of photosystem II in Arabidopsis thaliana.
Article in The Plant cell, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers.
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Who cites it
69 citing papers in PubMed, 125 citations in OpenAlex.
- ORANGE: a tale of two pigments and two organelles.Plant cell reports · 2026Review
- APE1 is involved in the stabilization/formation of the RC47 complex of PSII in oxygenic prototrophic organisms.Plant physiology · 2026Article
- Article
- Hybridization and low-light adaptability in California eelgrass (Zostera spp.).Nature plants · 2025Article
- ORANGE family proteins: multifunctional chaperones shaping plant carotenoid level, plastid development, stress tolerance, and more.Molecular horticulture · 2025Review
- Uncovering the photosystem I assembly pathway in land plants.Nature plants · 2024Article
- The thylakoid membrane protein NTA1 is an assembly factor of the cytochrome bPlant communications · 2023Article
- Photosystems under high light stress: throwing light on mechanism and adaptation.Photosynthetica · 2023Review
- Orange protein, phytoene synthase regulator, has protein disulfide reductase activity.Plant signaling & behavior · 2022Article
- Structure-based ligand design and discovery of novel tenuazonic acid derivatives with high herbicidal activity.Journal of advanced research · 2022Article
- DeLTa-Seq: direct-lysate targeted RNA-Seq from crude tissue lysate.Plant methods · 2022Article
- UBC19 is a new interacting protein of ORANGE for its nuclear localization inPlant signaling & behavior · 2021Article
- A homolog of GuidedEntry of Tail-anchored proteins3 functions in membrane-specific protein targeting in chloroplasts of Arabidopsis.The Plant cell · 2021Article
- Zinc Biofortification in Food Crops Could Alleviate the Zinc Malnutrition in Human Health.Molecules (Basel, Switzerland) · 2021Review
- Metabolome and Transcriptome Analyses Reveal the Regulatory Mechanisms of Photosynthesis in DevelopingInternational journal of molecular sciences · 2021Article
- ZnJ6 Is a Thylakoid Membrane DnaJ-Like Chaperone with Oxidizing Activity inInternational journal of molecular sciences · 2021Article
- Functional relationships of three NFU proteins in the biogenesis of chloroplastic iron-sulfur clusters.Plant direct · 2021Article
- The Zygotic Division Regulator ZAR1 Plays a Negative Role in Defense AgainstFrontiers in plant science · 2021Article
- Two organelle RNA recognition motif proteins affect distinct sets of RNA editing sites in thePlant direct · 2020Article
- Overexpression of BUNDLE SHEATH DEFECTIVE 2 improves the efficiency of photosynthesis and growth in Arabidopsis.The Plant journal : for cell and molecular biology · 2020Article
9 more citing papers are in PubMed but not listed here.
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This work identifies LOW QUANTUM YIELD OF PHOTOSYSTEM II1 (LQY1), a Zn finger protein that shows disulfide isomerase activity, interacts with the photosystem II (PSII) core complex, and may act in repair of photodamaged PSII complexes. Two mutants of an unannotated small Zn finger containing a thylakoid membrane protein of Arabidopsis thaliana (At1g75690; LQY1) were found to have a lower quantum yield of PSII photochemistry and reduced PSII electron transport rate following high-light treatment. The mutants dissipate more excess excitation energy via nonphotochemical pathways than wild type, and they also display elevated accumulation of reactive oxygen species under high light. After high-light treatment, the mutants have less PSII-light-harvesting complex II supercomplex than wild-type plants. Analysis of thylakoid membrane protein complexes showed that wild-type LQY1 protein comigrates with the PSII core monomer and the CP43-less PSII monomer (a marker for ongoing PSII repair and reassembly). PSII repair and reassembly involve the breakage and formation of disulfide bonds among PSII proteins. Interestingly, the recombinant LQY1 protein demonstrates a protein disulfide isomerase activity. LQY1 is more abundant in stroma-exposed thylakoids, where key steps of PSII repair and reassembly take place. The absence of the LQY1 protein accelerates turnover and synthesis of PSII reaction center protein D1. These results suggest that the LQY1 protein may be involved in maintaining PSII activity under high light by regulating repair and reassembly of PSII complexes.
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