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glutathione/arabidopsis thaliana
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Pagina 1 a partire dal 670 risultati
The structure of a zeta class glutathione S-transferase from Arabidopsis thaliana: characterisation of a GST with novel active-site architecture and a putative role in tyrosine catabolism.
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The cis-trans isomerisation of maleylacetoacetate to fumarylacetoacetate is the penultimate step in the tyrosine/phenylalanine catabolic pathway and has recently been shown to be catalysed by glutathione S-transferase enzymes belonging to the zeta class. Given this primary metabolic role it is
Characterisation of a zeta class glutathione transferase from Arabidopsis thaliana with a putative role in tyrosine catabolism.
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A glutathione transferase (GST) similar to zeta GSTs in animals and fungi has been cloned from Arabidopsis thaliana using RT-PCR. The Arabidopsis zeta GST (AtGSTZ1) was expressed in Escherichia coli as his-tagged polypeptides, which associated together to form the 50-kDa AtGSTZ1-1 homodimer.
Low glutathione regulates gene expression and the redox potentials of the nucleus and cytosol in Arabidopsis thaliana.
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Reduced glutathione (GSH) is considered to exert a strong influence on cellular redox homeostasis and to regulate gene expression, but these processes remain poorly characterized. Severe GSH depletion specifically inhibited root meristem development, while low root GSH levels decreased lateral root
Glutathione peroxidase-like enzymes cover five distinct cell compartments and membrane surfaces in Arabidopsis thaliana.
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Glutathione peroxidase-like enzymes (GPXLs) constitute a family of eight peroxidases in Arabidopsis thaliana. In contrast to the eponymous selenocysteine glutathione peroxidases in mammalian cells that use glutathione as electron donor, GPXLs rely on cysteine instead of selenocysteine for activity
Catabolism of glutathione conjugates in Arabidopsis thaliana. Role in metabolic reactivation of the herbicide safener fenclorim.
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The safener fenclorim (4,6-dichloro-2-phenylpyrimidine) increases tolerance to chloroacetanilide herbicides in rice by enhancing the expression of detoxifying glutathione S-transferases (GSTs). Fenclorim also enhances GSTs in Arabidopsis thaliana, and while investigating the functional significance
Exogenous salicylic acid-triggered changes in the glutathione transferases and peroxidases are key factors in the successful salt stress acclimation of Arabidopsis thaliana
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Salicylic acid (SA) applied exogenously is a potential priming agent during abiotic stress. In our experiments, the priming effect of SA was tested by exposing Arabidopsis thaliana (L.) Heynh. plants to 2-week-long 10-9-10-5 M SA pretreatments in a hydroponic medium, followed by 1 week of 100mM NaCl
Glutathione-indole-3-acetonitrile is required for camalexin biosynthesis in Arabidopsis thaliana.
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Camalexin, a major phytoalexin in Arabidopsis thaliana, consists of an indole ring and a thiazole ring. The indole ring is produced from Trp, which is converted to indole-3-acetonitrile (IAN) by CYP79B2/CYP79B3 and CYP71A13. Conversion of Cys(IAN) to dihydrocamalexic acid and subsequently to
Hydroperoxide reduction by thioredoxin-specific glutathione peroxidase isoenzymes of Arabidopsis thaliana.
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Arabidopsis thaliana contains eight glutathione peroxidase (GPX) homologs (AtGPX1-8). Four mature GPX isoenzymes with different subcellular distributions, AtGPX1, -2, -5 and -6, were overexpressed in Escherichia coli and characterized. Interestingly, these recombinant proteins were able to reduce
Characterization of two cDNAs (ERD11 and ERD13) for dehydration-inducible genes that encode putative glutathione S-transferases in Arabidopsis thaliana L.
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Two cDNA clones, designated ERD11 and ERD13, isolated from a cDNA library from Arabidopsis thaliana L. plants dehydrated for 1 h were sequenced and characterized. These clones encoded polypeptides that were homologous to glutathione S-transferases of tobacco and maize. Genomic Southern hybridization
Molecular characterization of a Phi-class mustard (Brassica juncea) glutathione S-transferase gene in Arabidopsis thaliana by 5'-deletion analysis of its promoter.
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Glutathione S-transferases (GSTs) are regulated by various stimuli at the transcriptional level. In this study, a 2,640-bp promoter sequence of a mustard GST gene, BjGSTF2, was cloned. Several truncated BjGSTF2 promoters were generated by 5'-deletion, fused to the beta-glucuronidase (GUS) coding
Isolation and characterization of an auxin-inducible glutathione S-transferase gene of Arabidopsis thaliana.
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Genes homologous to the auxin-inducible Nt103 glutathione S-transferase (GST) gene of tobacco, were isolated from a genomic library of Arabidopsis thaliana. We isolated a lambda clone containing an auxin-inducible gene, At103-1a, and part of a constitutively expressed gene, At103-1b. The coding
Characterisation of an Arabidopsis thaliana cDNA encoding glutathione synthetase.
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An Arabidopsis thaliana cDNA (AtGSHS) encoding a protein with high primary sequence identity to cDNAs previously isolated from Xenopus laevis (42%), Schizosaccharomyces pombe (40%), Rattus norvegicus (40%) and Homo sapiens (37%) encoding glutathione synthetase (EC 6.3.2.3) has been isolated by
Changes in biosynthesis and metabolism of glutathione upon ochratoxin A stress in Arabidopsis thaliana.
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Ochratoxin A (OTA) is one of the most toxic mycotoxins, which is toxic to plants and simulates oxidative stress. Glutathione is an important antioxidant in plants and is closely associated with detoxification in cells. We have previously shown that OTA exposure induces obvious expression differences
Characterization of Ser73 in Arabidopsis thaliana Glutathione S-transferase zeta class.
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Glutathione S-transferases (GSTs) are ubiquitous detoxifying superfamily enzymes. The zeta class GST from Arabidopsis thaliana (AtGSTZ) can efficiently degrade dichloroacetic acid (DCA), which is a common carcinogenic contaminant in drinking water. Ser73 in AtGSTZ is a conserved residue at
MAN3 gene regulates cadmium tolerance through the glutathione-dependent pathway in Arabidopsis thaliana.
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Pollution of soil by the heavy metal cadmium (Cd) is a global environmental problem. The glutathione (GSH)-dependent phytochelatin (PC) synthesis pathway is one of the most important mechanisms contributing to Cd accumulation and tolerance. However, the regulation of this pathway is poorly
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