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Stranica 1 iz 108 rezultatima
Determination of ADP-ribosyl cyclase activity, cyclic ADP-ribose, and nicotinic acid adenine dinucleotide phosphate in tissue extracts.
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Cyclic ADP-ribose (cADPR) is a novel second messenger that releases calcium from intracellular stores. Although first shown to release calcium in the sea urchin egg, cADPR has been shown since to be active in a variety of cells and tissues, from plant to human. cADPR stimulates calcium release via
Silencing of poly(ADP-ribose) polymerase in plants alters abiotic stress signal transduction.
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Transgenic plants with reduced poly(ADP-ribose) polymerase (PARP) levels have broad-spectrum stress-resistant phenotypes. Both Arabidopsis thaliana and oilseed rape (Brassica napus) lines overexpressing RNA interference-PARP constructs were more resistant to various abiotic stress treatments in
Arabidopsis POLYOL TRANSPORTER5, a new member of the monosaccharide transporter-like superfamily, mediates H+-Symport of numerous substrates, including myo-inositol, glycerol, and ribose.
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Six genes of the Arabidopsis thaliana monosaccharide transporter-like (MST-like) superfamily share significant homology with polyol transporter genes previously identified in plants translocating polyols (mannitol or sorbitol) in their phloem (celery [Apium graveolens], common plantain [Plantago
Poly(ADP-ribose)polymerase activity controls plant growth by promoting leaf cell number.
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A changing global environment, rising population and increasing demand for biofuels are challenging agriculture and creating a need for technologies to increase biomass production. Here we demonstrate that the inhibition of poly (ADP-ribose) polymerase activity is a promising technology to achieve
Capture of Ribonucleotides in Yeast Genomic DNA Using Ribose-Seq.
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Experiments conducted in yeast cells have recently shown abundant presence of ribonucleotides (rNMPs) embedded both in nuclear and mitochondrial DNA. Indeed, rNMPs are the most frequent, nonstandard nucleotides found in cellular DNA. rNMPs have a highly reactive 2'-hydroxyl group in the ribose sugar
Characterization of an Arabidopsis thaliana cDNA homologue to animal poly(ADP-ribose) polymerase.
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A full-length Arabidopsis thaliana cDNA (app) encoding a protein with high similarity (about 60%) to the catalytic domain of vertebrate poly(ADP-ribose) polymerase (PARP; EC 2.4.2.30) has been cloned. The N-terminal extension of the Arabidopsis protein shows similarities with domains of different
Analysis of poly(ADP-Ribose) polymerases in Arabidopsis telomere biology.
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Maintaining the length of the telomere tract at chromosome ends is a complex process vital to normal cell division. Telomere length is controlled through the action of telomerase as well as a cadre of telomere-associated proteins that facilitate replication of the chromosome end and protect it from
Modulation of the poly(ADP-ribosyl)ation reaction via the Arabidopsis ADP-ribose/NADH pyrophosphohydrolase, AtNUDX7, is involved in the response to oxidative stress.
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Here, we assessed modulation of the poly(ADP-ribosyl)ation (PAR) reaction by an Arabidopsis (Arabidopsis thaliana) ADP-ribose (Rib)/NADH pyrophosphohydrolase, AtNUDX7 (for Arabidopsis Nudix hydrolase 7), in AtNUDX7-overexpressed (Pro(35S):AtNUDX7) or AtNUDX7-disrupted (KO-nudx7) plants under normal
The yeast Saccharomyces cerevisiae YDL112w ORF encodes the putative 2'-O-ribose methyltransferase catalyzing the formation of Gm18 in tRNAs.
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The protein sequences of three known RNA 2'-O-ribose methylases were used as probes for detecting putative homologs through iterative searches of genomic databases. We have identified 45 new positive Open Reading Frames (ORFs), mostly in prokaryotic genomes. Five complete eukaryotic ORFs were also
Abscisic acid signaling through cyclic ADP-ribose in plants.
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Abscisic acid (ABA) is the primary hormone that mediates plant responses to stresses such as cold, drought, and salinity. Single-cell microinjection experiments in tomato were used to identify possible intermediates involved in ABA signal transduction. Cyclic ADP-ribose (cADPR) was identified as a
The ribokinases of Arabidopsis thaliana and Saccharomyces cerevisiae are required for ribose recycling from nucleotide catabolism, which in plants is not essential to survive prolonged dark stress.
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Nucleotide catabolism in Arabidopsis thaliana and Saccharomyces cerevisiae leads to the release of ribose, which requires phosphorylation to ribose-5-phosphate mediated by ribokinase (RBSK). We aimed to characterize RBSK in plants and yeast, to quantify the contribution of plant nucleotide
A yeast growth assay to characterize plant poly(ADP-ribose) polymerase (PARP) proteins and inhibitors.
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Poly(ADP-ribose) polymerases (PARPs) have been implicated in responses of plants to DNA damage and numerous stresses, whereby the mechanistic basis of the interference is often unclear. Therefore, the identification of specific inhibitors and potential interactors of plant PARPs is desirable. For
AtNUDX6, an ADP-ribose/NADH pyrophosphohydrolase in Arabidopsis, positively regulates NPR1-dependent salicylic acid signaling.
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Here, we investigated the physiological role of Arabidopsis (Arabidopsis thaliana) AtNUDX6, the gene encoding ADP-ribose (Rib)/NADH pyrophosphohydrolase, using its overexpressor (Pro35S:AtNUDX6) or disruptant (KO-nudx6). The level of NADH in Pro35S:AtNUDX6 and KO-nudx6 plants was decreased and
The nuclear protein Poly(ADP-ribose) polymerase 3 (AtPARP3) is required for seed storability in Arabidopsis thaliana.
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The deterioration of seeds during prolonged storage results in a reduction of viability and germination rate. DNA damage is one of the major cellular defects associated with seed deterioration. It is provoked by the formation of reactive oxygen species (ROS) even in the quiescent state of the
No Silver Bullet - Canonical Poly(ADP-Ribose) Polymerases (PARPs) Are No Universal Factors of Abiotic and Biotic Stress Resistance of Arabidopsis thaliana.
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Abiotic and biotic stress can have a detrimental impact on plant growth and productivity. Hence, there is a substantial demand for key factors of stress responses to improve yield stability of crops. Members of the poly(ADP-ribose)polymerase (PARP) protein family, which post-translationally modify
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