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Structural Insights into Substrate Specificity of Cystathionine γ-Synthase from Corynebacterium glutamicum.
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Cystathionine γ-synthase (MetB) condenses O-acetyl-l-homoserine (OAHS) or O-succinyl-l-homoserine (OSHS) with cysteine to produce cystathionine. To investigate the molecular mechanisms and substrate specificity of MetB from Corynebacterium glutamicum (CgMetB), we determined its crystal structure at
The level of threonine in tobacco seeds is limited by substrate availability, while the level of methionine is limited also by the activity of cystathionine γ-synthase.
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Methionine and threonine are two essential amino acids whose low levels limit the nutritional quality of seeds. The current objective was to define factors that regulate and might increase their levels in seeds. Feeding experiments carried out on receptacles of developing tobacco (Nicotiana tabacum)
First Report of Bacterial Leaf Spot of Spinach Caused by a Pseudomonas syringae Pathovar in California.
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In 2000 and 2001, a new disease was observed on commercial spinach (Spinacia oleracea) in the Salinas Valley, Monterey County, CA. Initial symptoms were water-soaked, irregularly shaped leaf spots (2 to 3 mm diameter). As the disease developed, spots enlarged to as much as 1 to 2 cm, were
Cloning, purification and characterisation of cystathionine gamma-synthase from Nicotiana tabacum.
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Cystathionine gamma-synthase, the enzyme catalysing the first reaction specific for methionine biosynthesis, has been cloned from Nicotiana tabacum, overexpressed in Escherichia coli and purified to homogeneity. The recombinant cystathionine gamma-synthase catalyses the pyridoxal 5'-phosphate
The crystal structure of cystathionine gamma-synthase from Nicotiana tabacum reveals its substrate and reaction specificity.
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Cystathionine gamma-synthase catalyses the committed step of de novo methionine biosynthesis in micro-organisms and plants, making the enzyme an attractive target for the design of new antibiotics and herbicides. The crystal structure of cystathionine gamma-synthase from Nicotiana tabacum has been
Rhodopseudomonas palustris quorum sensing molecule pC-HSL induces systemic resistance to TMV infection via up-regulation of NbSIPK/NbWIPK expressions in Nicotiana benthamiana
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G-negative bacteria produce a myriad of N-acyl-homoserine lactones (AHLs) that can function as quorum sensing (QS) signaling molecules. AHLs are also known to regulate various plant biological activities. p-Coumaroyl-homoserine lactone (pC-HSL) is the only QS molecule produced by a photosynthetic
Transgenic plants expressing the quorum quenching lactonase AttM do not significantly alter root-associated bacterial populations.
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The possible impact of genetically engineered plants that degrade the quorum sensing (QS) signal of the plant pathogen Pectobacterium carotovorum was evaluated on non-target plant-associated bacterial populations and communities using Nicotiana tabacum lines expressing the lactonase AttM that
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