Atf4 Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
.infobox .infobox-gene
| Gene Symbol | ATF4 |
|---|---|
| Gene Name | Activating Transcription Factor 4 |
| Chromosome | 22q13.1 |
| NCBI Gene ID | 468 |
| OMIM ID | 604064 |
| Ensembl ID | ENSG00000128272 |
| UniProt ID | P18851 |
| Associated Diseases | Alzheimer's Disease, Parkinson's Disease, Amyotrophic Lateral Sclerosis |
| --- | --- |
| Categories | Unfolded Protein Response, ER Stress |
Activating Transcription Factor 4 (ATF4) is a master regulator of the integrated stress response (ISR) and plays critical roles in cellular adaptation to various forms of stress including amino acid deprivation, oxidative stress, ER stress, and hypoxia. ATF4 belongs to the CREB/ATF family of transcription factors and is translationally regulated—when stress activates the eIF2α kinases GCN2, PKR, PERK, or HRI, translation of ATF4 mRNA is selectively enhanced. ATF4 then activates expression of genes involved in amino acid metabolism, antioxidant defense, and apoptosis. While acute ATF4 activation is protective, chronic ATF4 activation can promote cell death in neurons and contribute to muscle wasting. In cancer, ATF4 is often upregulated and supports tumor survival under nutrient-deprived conditions. Genetic variants in ATF4 have been associated with neurological disorders.
ATF4 is a transcription factor that mediates the integrated stress response (ISR). It is activated by phosphorylation of eIF2α and drives expression of genes involved in amino acid metabolism, antioxidant responses, and apoptosis. ATF4 can be neuroprotective or pro-apoptotic depending on context. In neurodegeneration, ATF4 target genes include CHOP (DDIT3) and various pro-apoptotic factors.
The ATF4 gene is associated with several diseases.
The study of Atf4 Gene has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.