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Participation of the stress-responsive CDSP32 thioredoxin in the modulation of chloroplast ATP-synthase activity in Solanum tuberosum.
Plant Cell Environ
December 2024
Aix Marseille University, CEA, CNRS, BIAM, Photosynthesis & Environment (P&E) Team, Saint Paul, France.
Plant thioredoxins (TRXs) are involved in numerous metabolic and signalling pathways, such as light-dependent regulation of photosynthesis. The atypical TRX CDSP32, chloroplastic drought-induced stress protein of 32 kDa, includes two TRX-fold domains and participates in responses to oxidative stress as an electron donor to other thiol reductases. Here, we further characterised potato lines modified for CDSP32 expression to clarify the physiological roles of the TRX.
View Article and Find Full Text PDFThe role of chloroplast SRP54 domains and its C-terminal tail region in post- and co-translational protein transport in vivo.
J Exp Bot
September 2024
Molecular Biology of Plant Organelles, Ruhr University Bochum, Bochum, Germany.
In the chloroplast, the 54 kDa subunit of the signal recognition particle (cpSRP54) is involved in the post-translational transport of the light-harvesting chlorophyll a/b-binding proteins (LHCPs) and the co-translational transport of plastid-encoded subunits of the photosynthetic complexes to the thylakoid membrane. It forms a high-affinity complex with plastid-specific cpSRP43 for post-translational transport, while a ribosome-associated pool coordinates its co-translational function. CpSRP54 constitutes a conserved multidomain protein, comprising a GTPase (NG) and a methionine-rich (M) domain linked by a flexible region.
View Article and Find Full Text PDFMultiple transcription factors involved in the response of Chinese cabbage against .
Front Plant Sci
June 2024
College of Horticulture, Shenyang Agricultural University, Shenyang, China.
Clubroot disease, which is caused by the obligate biotrophic protist , leads to the formation of galls, commonly known as pathogen-induced tumors, on the roots of infected plants. The identification of crucial regulators of host tumor formation is essential to unravel the mechanisms underlying the proliferation and differentiation of within plant cells. To gain insight into this process, transcriptomic analysis was conducted to identify key genes associated with both primary and secondary infection of in Chinese cabbage.
View Article and Find Full Text PDFCO-EXPRESSED WITH PSI ASSEMBLY1 (CEPA1) is a photosystem I assembly factor in Arabidopsis.
Plant Cell
October 2024
Department Organelle Biology, Biotechnology and Molecular Ecophysiology, Max Planck Institute of Molecular Plant Physiology, 14476 Potsdam-Golm, Germany.
Photosystem I (PSI) forms a large macromolecular complex of ∼580 kDa that resides in the thylakoid membrane and mediates photosynthetic electron transfer. PSI is composed of 18 protein subunits and nearly 200 co-factors. The assembly of the complex in thylakoid membranes requires high spatial and temporal coordination, and is critically dependent on a sophisticated assembly machinery.
View Article and Find Full Text PDFCAH3 from : Unique Carbonic Anhydrase of the Thylakoid Lumen.
Cells
January 2024
Institute of Basic Biological Problems, FRC PSCBR RAS, 142290 Pushchino, Russia.
CAH3 is the only carbonic anhydrase (CA) present in the thylakoid lumen of the green algae . The monomer of the enzyme has a molecular weight of ~29.5 kDa with high CA activity.
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