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fluoride/arabidopsis
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CsFEX, a Fluoride Export Protein Gene from Camellia sinensis, Alleviates Fluoride Toxicity in Transgenic Escherichia coli and Arabidopsis thaliana.
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A fluoride export gene ( CsFEX) was newly found and isolated from Camellia sinensis, and its functions in detoxifying F were investigated in transgenic Escherichia coli and Arabidopsis thaliana. CsFEX contains two crcB domains, which is the typical structure in plants. The expression of CsFEX in C.
Fluoride export (FEX) proteins from fungi, plants and animals are 'single barreled' channels containing one functional and one vestigial ion pore.
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The fluoride export protein (FEX) in yeast and other fungi provides tolerance to fluoride (F-), an environmentally ubiquitous anion. FEX efficiently eliminates intracellular fluoride that otherwise would accumulate at toxic concentrations. The FEX homolog in bacteria, Fluc, is a 'double-barreled'
Transcriptome-wide analysis of MADS-box family genes involved in aluminum and fluoride assimilation in Camellia sinensis.
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MADS-box transcription factors (TFs) are involved in a variety of processes in flowering plants ranging from root growth to flower and fruit development. However, studies of the tolerance-related functions of MADS-box genes are very limited, and to date no such studies have been conducted on
Identification, biochemical characterization, and subcellular localization of allantoate amidohydrolases from Arabidopsis and soybean.
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Allantoate amidohydrolases (AAHs) hydrolize the ureide allantoate to ureidoglycolate, CO(2), and two molecules of ammonium. Allantoate degradation is required to recycle purine-ring nitrogen in all plants. Tropical legumes additionally transport fixed nitrogen via allantoin and allantoate into the
Improved procedures for the selective chemical fragmentation of rhamnogalacturonans.
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The structural characterization of branched rhamnogalacturonans (RGs) requires the availability of methods that selectively cleave the Rhap-(1-->4)-alpha-GalAp linkage and thereby generate oligosaccharide fragments that are suitable for mass spectrometric and NMR spectroscopic analyses. Enzymic
Identification and characterization of an ecto-pyrophosphatase activity in intact epimastigotes of Trypanosoma rangeli.
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In this study, we performed the molecular and biochemical characterization of an ecto-enzyme present in Trypanosoma rangeli that is involved with the hydrolysis of extracellular inorganic pyrophosphate. PCR analysis identified a putative proton-pyrophosphatase (H(+)-PPase) in the epimastigote forms
The structure at 1.6 Angstroms resolution of the protein product of the At4g34215 gene from Arabidopsis thaliana.
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The crystal structure of the At4g34215 protein of Arabidopsis thaliana was determined by molecular replacement and refined to an R factor of 14.6% (R(free) = 18.3%) at 1.6 Angstroms resolution. The crystal structure confirms that At4g34215 belongs to the SGNH-hydrolase superfamily of enzymes. The
Identification of functional domains in Arabidopsis thaliana mRNA decapping enzyme (AtDcp2).
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The Arabidopsis thaliana decapping enzyme (AtDcp2) was characterized by bioinformatics analysis and by biochemical studies of the enzyme and mutants produced by recombinant expression. Three functionally significant regions were detected: (i) a highly disordered C-terminal region with a putative
The fungal subtilase AsES elicits a PTI-like defence response in Arabidopsis thaliana plants independently of its enzymatic activity.
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Acremonium strictum elicitor subtilisin (AsES) is a 34-kDa serine-protease secreted by the strawberry fungal pathogen A. strictum. On AsES perception, a set of defence reactions is induced, both locally and systemically, in a wide variety of plant species and against pathogens of alternative
Building custom polysaccharides in vitro with an efficient, broad-specificity xyloglucan glycosynthase and a fucosyltransferase.
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The current drive for applications of biomass-derived compounds, for energy and advanced materials, has led to a resurgence of interest in the manipulation of plant polymers. The xyloglucans, a family of structurally complex plant polysaccharides, have attracted significant interest due to their
Regulation of aquaporin-mediated water transport in Arabidopsis roots exposed to NaCl.
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The effects of Ca(NO3)2, KF and okadaic acid (OA) on cell hydraulic responses to NaCl were examined in roots of Arabidopsis thaliana wild-type plants and compared with plants overexpressing plasma membrane intrinsic protein PIP2;5. Root treatment with 10 mM NaCl rapidly and sharply reduced cell
The polyphosphate bodies of Chlamydomonas reinhardtii possess a proton-pumping pyrophosphatase and are similar to acidocalcisomes.
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Acidocalcisomes are acidic calcium storage compartments described initially in trypanosomatid and apicomplexan parasites. In this work, we describe organelles with properties similar to acidocalcisomes in the green alga Chlamydomonas reinhardtii. Nigericin and NH(4)Cl released (45)Ca(2+) from
Partial purification and characterization of a Ca(2+)-dependent proteinase from Arabidopsis roots.
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Ca2+, an important intracellular messenger in plants, is implicated in controlling diverse cellular functions by regulating the activity of several enzymes. Here we report the presence of a Ca(2+)-dependent proteinase (CDP) activity in roots of Arabidopsis using in-gel assays (zymograms). The CDP
Arabidopsis BRS1 is a secreted and active serine carboxypeptidase.
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The Arabidopsis BRS1 gene encodes a serine carboxypeptidase II-like protein. Its biological role in the brassinosteroid signaling pathway was first established by its capability to specifically suppress a weak brassinosteroid insensitive 1 (bri1) allele, bri1-5, when overexpressed. To gain
Ozone-induced programmed cell death in the Arabidopsis radical-induced cell death1 mutant.
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Short, high-concentration peaks of the atmospheric pollutant ozone (O(3)) cause the formation of cell death lesions on the leaves of sensitive plants. Numerous similarities between the plant responses to O(3) and pathogens suggest that O(3) triggers hypersensitive response-like programmed cell death
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