ArticlePlant physiology2013
A chloroplast ABC1-like kinase regulates vitamin E metabolism in Arabidopsis.
Article in Plant physiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.
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43 citing papers in PubMed, 83 citations in OpenAlex.
- A conserved sequence insert of fibrillins is involved in plastoglobule association and lipid binding.Plant & cell physiology · 2026Article
- Lipidomic profiling of Arabidopsis chloroplast protein phosphatase SLP1 mutants reveals altered diurnal lipid remodeling.BBA advances · 2026Article
- ABC1K2 is involved in stress response and secondary metabolism during seed development in Arabidopsis thaliana.Plant cell reports · 2025Article
- Cyanoglobule lipid droplets are a stress-responsive metabolic compartment of cyanobacteria and the progenitor of plant plastoglobules.The Plant cell · 2025Article
- Dalbergia odorifera undergoes massive molecular shifts in response to waterlogging combined with salinity.Plant physiology · 2024Article
- Genome-wide identification and analysis of expression patterns of theFrontiers in plant science · 2024Article
- The conserved active site aspartate residue is required for the function of the chloroplast atypical kinase ABC1K1.Frontiers in plant science · 2024Article
- Characterization of the preferred cation cofactors of chloroplast protein kinases in Arabidopsis thaliana.FEBS open bio · 2023Article
- Photosynthetic machinery under salinity stress: Trepidations and adaptive mechanisms.Photosynthetica · 2023Review
- The genome sequence of Hirschfeldia incana, a new Brassicaceae model to improve photosynthetic light-use efficiency.The Plant journal : for cell and molecular biology · 2022Article
- Fibrillin2 in chloroplast plastoglobules participates in photoprotection and jasmonate-induced senescence.Plant physiology · 2022Article
- Photosynthetic Light Harvesting and Thylakoid Organization in a CRISPR/Cas9 Arabidopsis Thaliana LHCB1 Knockout Mutant.Frontiers in plant science · 2022Article
- Article
- Genome-wide identification of wheat ABC1K gene family and functional dissection ofFrontiers in plant science · 2022Article
- Bean and Pea Plastoglobules Change in Response to Chilling Stress.International journal of molecular sciences · 2021Article
- Autophagy is required for lipid homeostasis during dark-induced senescence.Plant physiology · 2021Article
- Isolation of Plastoglobules for Lipid Analyses.Methods in molecular biology (Clifton, N.J.) · 2021Article
- ABC1K10a, an atypical kinase, functions in plant salt stress tolerance.BMC plant biology · 2020Article
- NaGenomics, proteomics & bioinformatics · 2020Article
- Mutation of the Atypical Kinase ABC1K3 Partially Rescues the PROTON GRADIENT REGULATION 6 Phenotype inFrontiers in plant science · 2020Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In bacteria and mitochondria, ABC1 (for Activity of bc1 complex)-like kinases regulate ubiquinone synthesis, mutations causing severe respiration defects, including neurological disorders in humans. Little is known about plant ABC1-like kinases; in Arabidopsis (Arabidopsis thaliana), five are predicted in mitochondria but, surprisingly, six are located at lipid droplets in chloroplasts. These are a known site of prenylquinone (including tocopherol [vitamin E], phylloquinone [vitamin K] and plastoquinone) metabolism and contain a large proportion of the tocopherol cyclase (VTE1) required for vitamin E synthesis and recycling. Therefore, ABC1-like kinases may be involved in the regulation of chloroplast prenylquinone metabolism. Using a nontargeted lipidomics approach, we demonstrate that plants lacking the plastoglobule ABC1-like kinase ABC1K3 are defective both for the production of plastochromanol-8 (a plastoquinone-derived lipid antioxidant) and the redox recycling of α-tocopherol, whereas tocopherol production is not affected. All of these pathways require VTE1 activity. However, in the abc1k3 mutant, VTE1 levels are strongly reduced posttranscriptionally. We provide evidence that the ABC1-like kinase ABC1K3 phosphorylates VTE1, possibly stabilizing it at plastoglobules. However, ABC1K3 may also have other targets and be involved in a wider chloroplast regulatory network.
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