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The in vitro assays demonstrate the binding of the C-terminus of AtGCN2 to uncharged tRNA molecules and the enzymatic activities of AtGCN2 on both eIF2alpha homologues in A. thaliana.
Analysis of wild-type and GT8359 (null mutant for AtGCN2) plants infected with Turnip yellow mosaic virus or Turnip crinkle virus showed that AteIF2alpha was not phosphorylated.
Data suggest that neither eIF2A nor eIF2D are involved in the translation of this Sindbis virus subgenomic mRNA (sgmRNA) bearing non-AUG codons.
HRD1 prevents apoptosis in renal tubular epithelial cells by mediating eIF-2a ubiquitylation and degradation.
POSTN may function as a protective factor for osteoblasts during this process by inhibiting the eIF2alphaATF4 pathway.
findings indicate that MSI1 plays a leading role in stress granule formation that grants cancer stem cell properties and chemoresistant stress granules in GBM, in response to stressful conditions via the PKR/eIF2alpha signalling cascade.
There was no statistically significant difference in IFN therapeutic effectiveness among the patients with different genotypes of eIF-2a-reg2.
activation by mechanical force
FN has a role in controlling translation through beta1 integrin and eukaryotic initiation factors 4 and 2 coordinated pathways
CReP deletion activates a linear signaling pathway involving eIF2alpha phosphorylation, ATF4 translation, and FGF21 induction, which promotes increased energy expenditure, and subsequently improved obesity-related metabolic parameters.
The data show that activating transcription factor 4 is not required, but eukaryotic initiation factor 2 alpha phosphorylation is necessary to prevent mTORC1 activation during amino acid stress.
ER stress is induced early in EAE and that modulation of ER stress by inhibition of eIF2alpha-CHOP and activation of XBP-1 in RGC specifically, protects RGC somata and axons and preserves visual function.
alpha-asarone abrogated 7beta-hydroxycholesterol-triggered eIF2alpha-CHOP activation, and enhanced macrophage beclin1 dependent autophagy.
In response to endoplasmic reticulum stress, activation of PERK coordinates the integrated stress response by phosphorylating eIF2alpha, which is then quickly dephosphorylated by the GADD34 complex. Data imply dual role of the ISR in promoting and inhibiting medulloblastoma tumorigenesis.
stress granule formation is a downstream event of eIF2alpha phosphorylation that may not directly protect cells from apoptosis, at least in spermatocytes of seminiferous tubules in early stages.
results further extended the understanding of Heme-regulated eIF2alpha kinase on the regulation of non-erythroid lineages and might provide new aspects for preventing and treating Cd-induced detrimental effects
Data, including data from studies using cells from knockout mice, suggest that gasotransmitter H(2)S up-regulates eIF2a phosphorylation by inhibiting PPP1CA via persulfidation, which in turn leads to transient suppression of global translation and activation of Atf4 expression. (eIF2a = eukaryotic initiation factor-2alpha; PPP1CA = protein phosphatase 1 catalytic subunit alpha; Atf4 = activating transcription factor 4)
Results mechanistically link multiple forms of dystonia and put forth a new overall cellular mechanism for dystonia pathogenesis, impairment of eIF2alpha signaling, a pathway known for its roles in cellular stress responses and synaptic plasticity.
The eIF2A knock out mice strain is viable and to date displays no apparent phenotype.
The role of dietary zinc in the expression of proteins involved in the endoplasmic reticulum stress response is reported.
Thus, during addiction, cocaine hijacks translational control by p-eIF2alpha, initiating synaptic potentiation and addiction-related behaviors.
in mouse skeletal muscle stem cells, general repression of translation, mediated by the phosphorylation of translation initiation factor eIF2alpha at serine 51 (P-eIF2alpha), is required to maintain the quiescent state
Skeletal muscle-specific eukaryotic translation initiation factor 2alpha phosphorylation controls amino acid metabolism and fibroblast growth factor 21-mediated non-cell-autonomous energy metabolism.
These experiments connect embryonic stem cell growth factors to eIF2alpha phosphorylation.
PGRN is a key regulator of insulin resistance and PGRN may mediate its effects, at least in part, by inducing ER stress via the PERK-eIF2alpha dependent pathway
The CARE-LUC mouse model represents an innovative tool to investigate the eIF2alpha-ATF4 axis and to develop drugs targeting this important pathway in the remediation of related pathologies.
inhibition of eIF2alpha and FAK signaling may play an important role in cigarette smoking-induced lung EC apoptosis and emphysema
eIF2a phosphorylation is required for the normal function of intestinal Paneth cells and mucosal homeostasis.
Both DrPKZ-A and DrPKZ-B isoforms functionally interact with eIF2alpha and inhibit protein synthesis in Danio rerio.
Taken together, these results demonstrate that Porcine reproductive and respiratory syndrome virus infection induces host translation shutoff and that nsp2 is associated with this process. Both eIF2alpha phosphorylation and the attenuation of the mTOR signaling pathway contribute to the virus-induced host translation arrest.
Therapeutic modulation of eIF2alpha phosphorylation rescues TDP-43 toxicity in amyotrophic lateral sclerosis disease models.
EIF2A is a 65-kD protein that catalyzes the formation of puromycin-sensitive 80S preinitiation complexes (Zoll et al., 2002
65 kDa eukaryotic translation initiation factor 2A
, eukaryotic translation initiation factor 2A
, Eukaryotic translation initiation factor 2A
, eukaryotic translation initiation factor 2A, 65kDa
, eukaryotic translation initiation factor
, eukaryotic translation initiation factor 2A-like
, eukaryotic initiation factor 2alpha
, eukaryotic translation initiation factor 2
, eukaryotic translation initiation factor 2alpha
, minute (1) 14C