Results 61 to 70 of about 8,559 (195)
GCN2 in proteostasis: structural logic, signalling networks and disease
The FEBS Journal, EarlyView.Threats to protein synthesis activate the kinase GCN2, initiating the integrated stress response (ISR). GCN2 is triggered by stalled ribosomes and uncharged tRNAs, which accumulate when amino acids are scarce. The ISR adjusts cellular physiology by promoting redox balance, protein quality control, and mitochondrial optimisation.
JiaYi Zhu, Stefan J. Marciniak
wiley +1 more source
Downregulation of nutrition sensor GCN2 in macrophages contributes to poor wound healing in diabetes
Cell ReportsSummary: Poor skin wound healing, which is common in patients with diabetes, is related to imbalanced macrophage polarization. Here, we find that nutrition sensor GCN2 (general control nonderepressible 2) and its downstream are significantly upregulated ...
Yangxiao Hou +11 more
doaj +1 more source
GCN2 phosphorylates HIV-1 integrase and decreases HIV-1 replication by limiting viral integration
Scientific Reports, 2017 GCN2 is a serine/threonine kinase involved in cellular stress response related to amino acid starvation. Previously, we showed that GCN2 interacts with HIV-1 integrase and is activated during HIV-1 infection.
A. Jaspart +13 more
doaj +1 more source
Ubiquitin and ubiquitin‐like modifications in the endoplasmic reticulum stress response
The FEBS Journal, EarlyView.Endoplasmic reticulum (ER) stress activates various proteostasis control processes, including the unfolded protein response, ribosome‐associated quality control, and ER‐associated degradation. Ubiquitin and ubiquitin‐like modifications dynamically regulate these processes to determine cell fate, promoting adaptation or inducing cell death.
Tony Avril +2 more
wiley +1 more source
Selective and competitive functions of the AAR and UPR pathways in stress-induced angiogenesis
Cell Discovery, 2021 The amino acid response (AAR) and unfolded protein response (UPR) pathways converge on eIF2α phosphorylation, which is catalyzed by Gcn2 and Perk, respectively, under different stresses.
Fan Zhang +27 more
doaj +1 more source
Plant Biotechnology Journal, EarlyView.ABSTRACT Drought stress severely restricts rice productivity, necessitating strategies to enhance stress resilience. Here, we identify translation termination as a tunable regulatory node for stress adaptation. Using 25 rounds of SELEX, we isolated RTAR, an RNA aptamer that binds the rice eukaryotic release factor 1 (OseRF1) with nanomolar affinity ...
Shuangfeng Dai +7 more
wiley +1 more source
Frontiers in Microbiology, 2017 The canonical Gcn2/Cpc1 kinase in fungi coordinates the expression of target genes in response to amino acid starvation. To investigate its possible role in secondary metabolism, we characterized a gcn2 homolog in the taxol-producing fungus ...
Dan Wang +6 more
doaj +1 more source
Interaction between the tRNA-binding and C-terminal domains of Yeast Gcn2 regulates kinase activity in vivo. [PDF]
PLoS Genetics, 2015 The stress-activated protein kinase Gcn2 regulates protein synthesis by phosphorylation of translation initiation factor eIF2α. Gcn2 is activated in amino acid-deprived cells by binding of uncharged tRNA to the regulatory domain related to histidyl-tRNA ...
Sebastien Lageix +3 more
doaj +1 more source
FEBS Open Bio, Volume 16, Issue 9, Page 1766-1785, September 2026.Pharmacological inhibition of PERK in a DEN‐induced mouse model of liver cancer does not reduce tumor burden but alters cellular stress signaling. Despite blocking PERK activity, downstream stress responses, including CHOP expression, remain active, suggesting compensatory mechanisms within the unfolded protein response that may influence tumor ...
Ada Lerma‐Clavero +5 more
wiley +1 more source
Scientific Reports, 2017 The anti-leukemic agent asparaginase activates the integrated stress response (ISR) kinase GCN2 and inhibits signaling via mechanistic target of rapamycin complex 1 (mTORC1).
Rana J. T. Al-Baghdadi +7 more
doaj +1 more source