Results 1 to 10 of about 44,045 (115)

M. mazei glutamine synthetase and glutamine synthetase-GlnK1 structures reveal enzyme regulation by oligomer modulation [PDF]

open access: yesNature Communications, 2023
Glutamine synthetases (GS) play central roles in cellular nitrogen assimilation. Although GS active-site formation requires the oligomerization of just two GS subunits, all GS form large, multi-oligomeric machines.
Maria A. Schumacher   +4 more
doaj   +2 more sources

Loss of Müller cell glutamine synthetase immunoreactivity is associated with neuronal changes in late-stage retinal degeneration [PDF]

open access: yesFrontiers in Neuroanatomy, 2023
IntroductionA hallmark of photoreceptor degenerations is progressive, aberrant remodeling of the surviving retinal neurons and glia following photoreceptor loss.
Hallur Reynisson   +7 more
doaj   +2 more sources

Heliorhodopsin binds and regulates glutamine synthetase activity. [PDF]

open access: yesPLoS Biology, 2022
Photoreceptors are light-sensitive proteins found in various organisms that respond to light and relay signals into the cells. Heliorhodopsin, a retinal-binding membrane protein, has been recently discovered, however its function remains unknown. Herein,
Shin-Gyu Cho   +5 more
doaj   +3 more sources

cpt1b Regulates Cardiomyocyte Proliferation Through Modulation of Glutamine Synthetase in Zebrafish [PDF]

open access: yesJournal of Cardiovascular Development and Disease
Carnitine palmitoyltransferase 1b (Cpt1b) is a crucial rate-limiting enzyme in fatty acid metabolism, but its role and mechanism in early cardiac development remains unclear. Here, we show that cpt1b regulates cardiomyocyte proliferation during zebrafish
Xiaohan Cheng   +4 more
doaj   +2 more sources

Glutamine Synthetase Contributes to the Regulation of Growth, Conidiation, Sclerotia Development, and Resistance to Oxidative Stress in the Fungus Aspergillus flavus

open access: yesToxins, 2022
The basic biological function of glutamine synthetase (Gs) is to catalyze the conversion of ammonium and glutamate to glutamine. This synthetase also performs other biological functions. However, the roles of Gs in fungi, especially in filamentous fungi,
Sen Wang   +6 more
doaj   +1 more source

Differential inhibition of adenylylated and deadenylylated forms of M. tuberculosis glutamine synthetase as a drug discovery platform. [PDF]

open access: yesPLoS ONE, 2017
Glutamine synthetase is a ubiquitous central enzyme in nitrogen metabolism that is controlled by up to four regulatory mechanisms, including adenylylation of some or all of the twelve subunits by adenylyl transferase.
A Theron   +9 more
doaj   +1 more source

Glutamine Synthetase Sensitivity to Oxidative Modification during Nutrient Starvation in Prochlorococcus marinus PCC 9511. [PDF]

open access: yesPLoS ONE, 2015
Glutamine synthetase plays a key role in nitrogen metabolism, thus the fine regulation of this enzyme in Prochlorococcus, which is especially important in the oligotrophic oceans where this marine cyanobacterium thrives.
Guadalupe Gómez-Baena   +4 more
doaj   +1 more source

Licensing instead of fueling: Glutamine synthetase promotes mitotic progression via a non-metabolic mechanism

open access: yesVisualized Cancer Medicine, 2023
A recent report published in Nature Metabolism identified that glutamine synthetase (GS), the only enzyme in mammals to produce glutamine from glutamate, can directly control cancer cell mitosis by governing the APC/C complex via a metabolism-independent
Zhao Jiang-Sha   +3 more
doaj   +1 more source

Investigating the role of GLUL as a survival factor in cellular adaptation to glutamine depletion via targeted stable isotope resolved metabolomics

open access: yesFrontiers in Molecular Biosciences, 2022
Cellular glutamine synthesis is thought to be an important resistance factor in protecting cells from nutrient deprivation and may also contribute to drug resistance.
Șafak Bayram   +10 more
doaj   +1 more source

Ammonia promotes the proliferation of bone marrow-derived mesenchymal stem cells by regulating the Akt/mTOR/S6k pathway

open access: yesBone Research, 2022
Ammonia plays an important role in cellular metabolism. However, ammonia is considered a toxic product. In bone marrow-derived mesenchymal stem cells, multipotent stem cells with high expression of glutamine synthetase (GS) in bone marrow, ammonia and ...
Yu Liu   +12 more
doaj   +1 more source

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