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arginase/arabidopsis
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Pagina 1 a partire dal 18 risultati
The Neighboring Subunit Is Engaged to Stabilize the Substrate in the Active Site of Plant Arginases
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Arginine acts as a precursor of polyamines in plants in two known pathways, agmatine and ornithine routes. It is decarboxylated to agmatine by arginine decarboxylase, and then transformed to putrescine by the consecutive action of agmatine iminohydrolase and N-carbamoylputrescine amidohydrolase.
Roles of conserved residues in the arginase family.
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Arginases and related enzymes metabolize arginine or similar nitrogen-containing compounds to urea or formamide. In the present report a sequence alignment of 31 members of this family was generated. The alignment, together with the crystal structure of rat liver arginase, allowed the assignment of
Biochemical and functional characterization of an atypical plant l-arginase from Cilantro (Coriandrum sativam L.).
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Arginase is one of the key enzymes responsible for maintaining the essential levels of nitrogen among plants, but biochemical and functional characterization of arginase among plants is limited. While screening for stable plant arginase, we found cilantro possessing an abundant and stable arginase.
Arginase induction represses gall development during clubroot infection in Arabidopsis.
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Arginase induction can play a defensive role through the reduction of arginine availability for phytophageous insects. Arginase activity is also induced during gall growth caused by Plasmodiophora brassicae infection in roots of Arabidopsis thaliana; however, its possible role in this context has
Arginase-negative mutants of Arabidopsis exhibit increased nitric oxide signaling in root development.
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Mutation of either arginase structural gene (ARGAH1 or ARGAH2 encoding arginine [Arg] amidohydrolase-1 and -2, respectively) resulted in increased formation of lateral and adventitious roots in Arabidopsis (Arabidopsis thaliana) seedlings and increased nitric oxide (NO) accumulation and efflux,
Dual functioning of plant arginases provides a third route for putrescine synthesis.
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Two biosynthetic routes are known for putrescine, an essential plant metabolite. Ornithine decarboxylase (ODC) converts ornithine directly to putrescine, while a second route for putrescine biosynthesis utilizes arginine decarboxylase (ADC) to convert arginine to agmatine, and two additional
Overexpression of arginase in Arabidopsis thaliana influences defence responses against Botrytis cinerea.
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Arabidopsis possesses two arginase-encoding genes, ARGAH1 and ARGAH2, catalysing the catabolism of arginine into ornithine and urea. Arginine and ornithine are both precursors for polyamine biosynthetic pathways. We observed an accumulation of ARGAH2 mRNA in Arabidopsis upon inoculation with the
Analysis of Arabidopsis arginase gene transcription patterns indicates specific biological functions for recently diverged paralogs.
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The detailed expression patterns of transcripts of two Arabidopsis arginase genes, ARGAH1 and ARGAH2, have not been previously described, and phylogenetic analysis suggests that they diverged independently of duplication events in other lineages. Therefore, we used beta-glucuronidase reporter
Manipulation of arginase expression modulates abiotic stress tolerance in Arabidopsis: effect on arginine metabolism and ROS accumulation.
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Arginine is an important medium for the transport and storage of nitrogen, and arginase (also known as arginine amidohydrolase, ARGAH) is responsible for catalyse of arginine into ornithine and urea in plants. In this study, the impact of AtARGAHs on abiotic stress response was investigated by
In vivo role of Arabidopsis arginase in arginine metabolism and abiotic stress response.
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Nitric oxide (NO) and polyamines play essential roles in many developmental processes and abiotic stress responses in plants. NO and polyamines are metabolized from arginine through NO synthase (NOS) and arginine decarboxylase (ADC), respectively. Function of arginase, another important enzyme
Nucleotide sequence of Arabidopsis thaliana arginase expressed in yeast.
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Identification and characterization of proteins involved in rice urea and arginine catabolism.
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Rice (Oryza sativa) production relies strongly on nitrogen (N) fertilization with urea, but the proteins involved in rice urea metabolism have not yet been characterized. Coding sequences for rice arginase, urease, and the urease accessory proteins D (UreD), F (UreF), and G (UreG) involved in urease
Identification of a mitochondrial transporter for basic amino acids in Arabidopsis thaliana by functional reconstitution into liposomes and complementation in yeast.
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We describe the identification and functional characterization of two Arabidopsis mitochondrial basic amino acid carriers (BAC), AtmBAC1 and AtmBAC2, which are related to the yeast ornithine (Orn) carrier Ort1p, also known as Arg11p. The arg11 mutant requires arginine (Arg) supplementation because
Copper amine oxidase 8 regulates arginine-dependent nitric oxide production in Arabidopsis thaliana.
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Nitric oxide (NO) is a key signaling molecule in plants, regulating a wide range of physiological processes. However, its origin in plants remains unclear. It can be generated from nitrite through a reductive pathway, notably via the action of the nitrate reductase (NR), and evidence suggests an
Differential regulation of root arginine catabolism and polyamine metabolism in clubroot-susceptible and partially resistant Arabidopsis genotypes.
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The hypertrophy and hyperplasia of infected roots into clubs are the intrinsic characteristics of clubroot, one of the economically most important diseases in Brassica crops worldwide. Polyamines, arginine (Arg)-derived metabolites, have long been recognized as cell proliferation and differentiation
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