ArticleThe Plant cell2001
The chloroplast gene ycf9 encodes a photosystem II (PSII) core subunit, PsbZ, that participates in PSII supramolecular architecture.
Article in The Plant cell, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.
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45 citing papers in PubMed, 135 citations in OpenAlex.
- Assembly-dependent translational feedback regulation of photosynthetic proteins in land plants.Nature plants · 2025Article
- The biogenesis and maintenance of PSII: Recent advances and current challenges.The Plant cell · 2024Review
- Characterization of the complete chloroplast genome of Rhodiola sachalinensis and comparative analysis with its congeneric plants.FEBS open bio · 2024Article
- Assembly and Repair of Photosystem II inPlants (Basel, Switzerland) · 2024Review
- Million-atom molecular dynamics simulations reveal the interfacial interactions and assembly of plant PSII-LHCII supercomplex.RSC advances · 2023Article
- Chloroplast translational regulation uncovers nonessential photosynthesis genes as key players in plant cold acclimation.The Plant cell · 2022Article
- Variation in plastid genomes in the gynodioecious species Silene vulgaris.BMC plant biology · 2019Article
- Organelle Studies and Proteome Analyses of Mitochondria and Plastids Fractions from the Diatom Thalassiosira pseudonana.Plant & cell physiology · 2019Article
- Quantitative Phosphoproteomic and Physiological Analyses Provide Insights into the Formation of the Variegated Leaf inInternational journal of molecular sciences · 2019Article
- The Chloroplast Genome of Symplocarpus renifolius: A Comparison of Chloroplast Genome Structure in Araceae.Genes · 2017Article
- Small RNA profiling in Chlamydomonas: insights into chloroplast RNA metabolism.Nucleic acids research · 2017Article
- Article
- Cytosine deaminase as a negative selectable marker for the microalgal chloroplast: a strategy for the isolation of nuclear mutations that affect chloroplast gene expression.The Plant journal : for cell and molecular biology · 2014Article
- Structural, functional and auxiliary proteins of photosystem II.Photosynthesis research · 2013Review
- Enhanced stability of thylakoid membrane proteins and antioxidant competence contribute to drought stress resistance in the tasg1 wheat stay-green mutant.Journal of experimental botany · 2013Article
- Translation of partially overlapping psbD-psbC mRNAs in chloroplasts: the role of 5'-processing and translational coupling.Nucleic acids research · 2012Article
- A study of new Arabidopsis chloroplast RNA editing mutants reveals general features of editing factors and their target sites.The Plant cell · 2009Article
- Impact of PsbTc on forward and back electron flow, assembly, and phosphorylation patterns of photosystem II in tobacco.Plant physiology · 2008Article
- Photosystem II assembly and repair are differentially localized in Chlamydomonas.The Plant cell · 2007Article
- Role of the low-molecular-weight subunits PetL, PetG, and PetN in assembly, stability, and dimerization of the cytochrome b6f complex in tobacco.Plant physiology · 2007Article
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12 authors at 6 institutions in 4 countries.
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No grant is acknowledged in the PubMed record.
Abstract
We have characterized the biochemical nature and the function of PsbZ, the protein product of a ubiquitous open reading frame, which is known as ycf9 in Chlamydomonas and ORF 62 in tobacco, that is present in chloroplast and cyanobacterial genomes. After raising specific antibodies to PsbZ from Chlamydomonas and tobacco, we demonstrated that it is a bona fide photosystem II (PSII) subunit. PsbZ copurifies with PSII cores in Chlamydomonas as well as in tobacco. Accordingly, PSII mutants from Chlamydomonas and tobacco are deficient in PsbZ. Using psbZ-targeted gene inactivation in tobacco and Chlamydomonas, we show that this protein controls the interaction of PSII cores with the light-harvesting antenna; in particular, PSII-LHCII supercomplexes no longer could be isolated from PsbZ-deficient tobacco plants. The content of the minor chlorophyll binding protein CP26, and to a lesser extent that of CP29, also was altered substantially under most growth conditions in the tobacco mutant and in Chlamydomonas mutant cells grown under photoautotrophic conditions. These PsbZ-dependent changes in the supramolecular organization of the PSII cores with their peripheral antennas cause two distinct phenotypes in tobacco and are accompanied by considerable modifications in (1) the pattern of protein phosphorylation within PSII units, (2) the deepoxidation of xanthophylls, and (3) the kinetics and amplitude of nonphotochemical quenching. The role of PsbZ in excitation energy dissipation within PSII is discussed in light of its proximity to CP43, in agreement with the most recent structural data on PSII.
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