6 phosphogluconate dehydrogenase/vairenis

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Expression of glucose-6-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase isoform genes in suspension-cultured Arabidopsis thaliana cells.

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The activities of glucose-6-phosphate dehydrogenase (G6PDH, EC 1.1.1.49) and 6-phosphogluconate dehydrogenase (6PGDH, EC 1.1.1.44) were found to increase in suspension-cultured Arabidopsis thaliana cells after 10-day-old stationary phase cells were transferred to fresh Murashige-Skoog medium. The

In Silico Analysis of Arabidopsis thaliana Peroxisomal 6-Phosphogluconate Dehydrogenase.

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NADPH, whose regeneration is critical for reductive biosynthesis and detoxification pathways, is an essential component in cell redox homeostasis. Peroxisomes are subcellular organelles with a complex biochemical machinery involved in signaling and stress processes by molecules such as hydrogen

Defects in Peroxisomal 6-Phosphogluconate Dehydrogenase Isoform PGD2 Prevent Gametophytic Interaction in Arabidopsis thaliana.

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We studied the localization of 6-phosphogluconate dehydrogenase (PGD) isoforms of Arabidopsis (Arabidopsis thaliana). Similar polypeptide lengths of PGD1, PGD2, and PGD3 obscured which isoform may represent the cytosolic and/or plastidic enzyme plus whether PGD2 with a peroxisomal targeting motif

Analysis of homo- and hetero-dimerization among the three 6-phosphogluconate dehydrogenase isoforms of Arabidopsis.

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We recently described that all three 6-phosphogluconate dehydrogenase (6PGDH) isoforms of Arabidopsis (PGD) with similar length show dual localization: PGD1 and PGD3 in the cytosol and in plastids, and PGD2 in the cytosol and in peroxisomes. We set out to investigate heterodimer formation, however

Monitoring flux through the oxidative pentose phosphate pathway using [1-14C]gluconate.

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The aim of this work was to examine the metabolism of exogenous gluconate by a 4-day-old cell suspension culture of Arabidopsis thaliana (L.) Heynh. Release of (14)CO(2) from [1-(14)C]gluconate was dependent on the concentration in the medium and could be resolved into a substrate-saturable

Activation of NADPH-recycling systems in leaves and roots of Arabidopsis thaliana under arsenic-induced stress conditions is accelerated by knock-out of Nudix hydrolase 19 (AtNUDX19) gene.

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NADPH is an important cofactor in cell growth, proliferation and detoxification. Arabidopsis thaliana Nudix hydrolase 19 (AtNUDX19) belongs to a family of proteins defined by the conserved amino-acid sequence GX5-EX7REUXEEXGU which has the capacity to hydrolyze NADPH as a physiological substrate in

Glyphosate-induced oxidative stress in Arabidopsis thaliana affecting peroxisomal metabolism and triggers activity in the oxidative phase of the pentose phosphate pathway (OxPPP) involved in NADPH generation.

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Glyphosate is a broad-spectrum systemic herbicide used worldwide. In susceptible plants, glyphosate affects the shikimate pathway and reduces aromatic amino acid synthesis. Using Arabidopsis seedlings grown in the presence of 20μM glyphosate, we analyzed H2O2, ascorbate, glutathione (GSH) and

NADP-dependent isocitrate dehydrogenase from Arabidopsis roots contributes in the mechanism of defence against the nitro-oxidative stress induced by salinity.

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NADPH regeneration appears to be essential in the mechanism of plant defence against oxidative stress. Plants contain several NADPH-generating dehydrogenases including isocitrate dehydrogenase (NADP-ICDH), glucose-6-phosphate dehydrogenase (G6PDH), 6-phosphogluconate dehydrogenase (6PGDH), and malic

Analysis of potential redundancy among Arabidopsis 6-phosphogluconolactonase (PGL) isoforms in peroxisomes.

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Recent work revealed that PGD2, an Arabidopsis 6-phosphogluconate dehydrogenase (6-PGD), catalyzing the third step of the oxidative pentose-phosphate pathway (OPPP) in peroxisomes, is essential during fertilization. Earlier studies on the second step catalyzed by PGL3, a dually targeted Arabidopsis

Alternative targeting of Arabidopsis plastidic glucose-6-phosphate dehydrogenase G6PD1 involves cysteine-dependent interaction with G6PD4 in the cytosol.

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Arabidopsis peroxisomes contain an incomplete oxidative pentose-phosphate pathway (OPPP), consisting of 6-phosphogluconolactonase and 6-phosphogluconate dehydrogenase isoforms with peroxisomal targeting signals (PTS). To start the pathway, glucose-6-phosphate dehydrogenase (G6PD) is required;

A cyanobacterial gene in nonphotosynthetic protists--an early chloroplast acquisition in eukaryotes?

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Since the incorporation of mitochondria and chloroplasts (plastids) into the eukaryotic cell by endosymbiosis, genes have been transferred from the organellar genomes to the nucleus of the host, via an ongoing process known as endosymbiotic gene transfer. Accordingly, in photosynthetic eukaryotes,

Identification of catalytically important amino acid residues for enzymatic reduction of glyoxylate in plants.

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NADPH-dependent glyoxylate reductases from Arabidopsis thaliana (AtGLYR) convert both glyoxylate and succinic semialdehyde into their corresponding hydroxyacid equivalents. The primary sequence of cytosolic AtGLYR1 reveals several sequence elements that are consistent with the β-HAD (β-hydroxyacid

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