Results 41 to 50 of about 91,004 (324)

The Rhizobium GstI Protein Reduces the NH4+ Assimilation Capacity of Rhizobium leguminosarum

open access: yesMolecular Plant-Microbe Interactions, 2001
We show that the protein encoded by the glutamine synthetase translational inhibitor (gstI) gene reduces the NH4+ assimilation capacity of Rhizobium leguminosarum.
Rosarita Tatè   +6 more
doaj   +1 more source

Glutamine metabolism in the proliferation of GS-expression pituitary tumor cells

open access: yesEndocrine Connections, 2020
Objective: Many cancer cells cannot survive without exogenous glutamine (Gln); however, cancer cells expressing glutamine synthetase (GS) do not have this restriction.
Jintao Hu   +6 more
doaj   +1 more source

Molecular mechanisms of adaptation of the moderately halophilic bacterium Halobacillis halophilus to its environment [PDF]

open access: yes, 2013
The capability of osmoadaptation is a prerequisite of organisms that live in an environment with changing salinities. Halobacillus halophilus is a moderately halophilic bacterium that grows between 0.4 and 3 M NaCl by accumulating both chloride and ...
Hänelt, Inga, Müller, Volker
core   +2 more sources

The intracellular location of nitrogen metabolism enzymes in Pisum arvense L. roots

open access: yesActa Societatis Botanicorum Poloniae, 2014
The time course changes of nitrate assimilation enzymes and their distribution has been studied in Pisum arvense roots. The results indicate that nitrate reductase (EC 1.6.6.2) and glutamine synthetase (EC 6.3.1.2) are present in the soluble fraction ...
Grażyna Kłobus   +2 more
doaj   +1 more source

Asparagine promotes cancer cell proliferation through use as an amino acid exchange factor. [PDF]

open access: yes, 2016
Cellular amino acid uptake is critical for mTOR complex 1 (mTORC1) activation and cell proliferation. However, the regulation of amino acid uptake is not well-understood.
Braas, Daniel   +4 more
core   +1 more source

Abnormalities in Glutamate Metabolism and Excitotoxicity in the Retinal Diseases

open access: yesScientifica, 2013
In the physiological condition, glutamate acts as an excitatory neurotransmitter in the retina. However, excessive glutamate can be toxic to retinal neurons by overstimulation of the glutamate receptors.
Makoto Ishikawa
doaj   +1 more source

Effect of chilling and acclimation on the activity of glutamine synthetase isoforms in maize seedlings [PDF]

open access: yesArchives of Biological Sciences, 2007
Effects of chilling and acclimation on the activity of cytosolic (GS1) and plastidic (GS2) isoforms of glutamine synthetase (E.C. 6.3.1.2) were studied in chilling-sensitive and acclimation-responsive maize inbred G50.
Simonović Ana D., Anderson M.D.
doaj   +1 more source

Direct molecular and spectroscopic evidence for increased ammonia removal capacity of skeletal muscle in acute liver failure

open access: yes, 2006
BACKGROUND/AIMS: It has been proposed that, in acute liver failure, skeletal muscle adapts to become the principle organ responsible for removal of blood-borne ammonia by increasing glutamine synthesis, a reaction that is catalyzed by the cytosolic ATP ...
Butterworth, Roger   +5 more
core   +1 more source

L-arginine metabolism in mitochondria isolated from the liver of Antarctic fish Notothenia rossii and Notothenia neglecta

open access: yesBrazilian Archives of Biology and Technology, 2006
The arginase tissue distribution, the biochemical properties of the argininolytic system and the subcellular localization of the enzymes carbamoylphosphate synthetase, ornithinecarbamoyl transferase, glutamine synthetase and arginase in Antarctic fish, N.
Edson Rodrigues   +2 more
doaj   +1 more source

Delaying chloroplast turnover increases water-deficit stress tolerance through the enhancement of nitrogen assimilation in rice. [PDF]

open access: yes, 2017
Abiotic stress-induced senescence in crops is a process particularly affecting the photosynthetic apparatus, decreasing photosynthetic activity and inducing chloroplast degradation.
Blumwald, Eduardo   +5 more
core   +1 more source

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