ArticleThe Journal of biological chemistry2014
A thylakoid membrane protein harboring a DnaJ-type zinc finger domain is required for photosystem I accumulation in plants.
Article in The Journal of biological chemistry, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.
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Who cites it
44 citing papers in PubMed, 68 citations in OpenAlex.
- Uncovering the role of the PPR protein PHOTOSYSTEM ONE BIOGENESIS FACTOR6 in splicing chloroplast group II introns.Journal of integrative plant biology · 2026Article
- ORANGE: a tale of two pigments and two organelles.Plant cell reports · 2026Review
- On the non-oxygenic origins of thylakoids.Communications biology · 2025Review
- Editing of rice PSEUDO-ETIOLATION IN LIGHT microProtein genes promotes chloroplast development.The Plant cell · 2025Article
- Structure, regulation and assembly of the photosynthetic electron transport chain.Nature reviews. Molecular cell biology · 2025Review
- Integrative Analysis of Transcriptomic and Metabolomic Profiles Uncovers the Mechanism of Color Variation in the Tea Plant Callus.Plants (Basel, Switzerland) · 2025Article
- ORANGE family proteins: multifunctional chaperones shaping plant carotenoid level, plastid development, stress tolerance, and more.Molecular horticulture · 2025Review
- Localization of proteins involved in the biogenesis and repair of the photosynthetic apparatus to thylakoid subdomains inPlant direct · 2024Article
- CO-EXPRESSED WITH PSI ASSEMBLY1 (CEPA1) is a photosystem I assembly factor in Arabidopsis.The Plant cell · 2024Article
- Structure, function, and assembly of PSI in thylakoid membranes of vascular plants.The Plant cell · 2024Review
- The uS10c-BPG2 module mediates ribosomal RNA processing in chloroplast nucleoids.Nucleic acids research · 2024Article
- Hypothetical chloroplast reading frame 51 encodes a photosystem I assembly factor in cyanobacteria.The Plant cell · 2024Article
- Uncovering the photosystem I assembly pathway in land plants.Nature plants · 2024Article
- Chloroplast protein translocation pathways and ubiquitin-dependent regulation at a glance.Journal of cell science · 2023Article
- The tomato chloroplast stromal proteome compendium elucidated by leveraging a plastid protein-localization prediction Atlas.Frontiers in plant science · 2023Article
- The maize callose synthaseMolecular breeding : new strategies in plant improvement · 2023Article
- Orange protein, phytoene synthase regulator, has protein disulfide reductase activity.Plant signaling & behavior · 2022Article
- Review
- PALE-GREEN LEAF 1, a rice cpSRP54 protein, is essential for the assembly of the PSI-LHCI supercomplex.Plant direct · 2022Article
- NADP+ supply adjusts the synthesis of photosystem I in Arabidopsis chloroplasts.Plant physiology · 2022Article
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Photosystem I (PSI) is a large pigment-protein complex and one of the two photosystems that drive electron transfer in oxygenic photosynthesis. We identified a nuclear gene required specifically for the accumulation of PSI in a forward genetic analysis of chloroplast biogenesis in maize. This gene, designated psa2, belongs to the "GreenCut" gene set, a group of genes found in green algae and plants but not in non-photosynthetic organisms. Disruption of the psa2 ortholog in Arabidopsis likewise resulted in the specific loss of PSI proteins. PSA2 harbors a conserved domain found in DnaJ chaperones where it has been shown to form a zinc finger and to have protein-disulfide isomerase activity. Accordingly, PSA2 exhibited protein-disulfide reductase activity in vitro. PSA2 localized to the thylakoid lumen and was found in a ∼250-kDa complex harboring the peripheral PSI protein PsaG but lacking several core PSI subunits. PSA2 mRNA is coexpressed with mRNAs encoding various proteins involved in the biogenesis of the photosynthetic apparatus with peak expression preceding that of genes encoding structural components. PSA2 protein abundance was not decreased in the absence of PSI but was reduced in the absence of the PSI assembly factor Ycf3. These findings suggest that a complex harboring PSA2 and PsaG mediates thiol transactions in the thylakoid lumen that are important for the assembly of PSI.
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