GO:1902010 negative regulation of translation in response to endoplasmic reticulum stress: Protein Synthesis Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1902010 describes the biological process that stops or reduces protein translation specifically when the endoplasmic reticulum (ER) experiences stress.
• The core mechanism involves phosphorylation of eIF2alpha by stress-activated kinases, which blocks new protein synthesis while allowing selective translation of stress-response factors like ATF4.
• This process is essential for restoring ER homeostasis and determining cell fate under conditions such as ischemia-reperfusion injury and diabetes [1,5].
• Key regulators include ATF6, HRD1, SEL1L, and ATF5, which coordinate ER-associated degradation and the unfolded protein response with translational control [1,5,6].
• Dysregulation of this pathway contributes to hepatic injury, diabetic kidney disease, pancreatic beta-cell dysfunction, and inflammatory disorders [1,5,7,8].
• CRISPR-based models (knockout, point mutation, knock-in, overexpression) enable precise dissection of how individual genes control translation during ER stress.
Description
The endoplasmic reticulum (ER) is the primary site for folding and modification of secretory and membrane proteins. When the folding capacity of the ER is overwhelmed, a condition known as ER stress, cells activate the unfolded protein response (UPR) to restore homeostasis. A critical arm of the UPR is the global attenuation of protein translation, which reduces the load of newly synthesized proteins entering the ER. This process is formally annotated as GO:1902010, negative regulation of translation in response to endoplasmic reticulum stress. Understanding this process is fundamental for researchers studying cell survival, protein quality control, and diseases linked to proteostasis failure. The regulation of translation under ER stress is not a simple shutdown; it is a highly selective process that permits the translation of specific mRNAs, such as that encoding the transcription factor ATF4, while blocking most other transcripts. This selectivity is achieved through phosphorylation of the alpha subunit of eukaryotic initiation factor 2 (eIF2alpha), which inhibits the recycling of the ternary complex required for translation initiation. The importance of this pathway extends beyond basic cell biology. In hepatic ischemia-reperfusion injury, for example, the ER-resident protein GRINA alleviates apoptosis and ER-phagy by enhancing HRD1-mediated ubiquitination of ATF6, a process that intersects with translational control. Similarly, in diabetic kidney disease, ATF5 regulates tubulointerstitial injury via the mitochondrial unfolded protein response, highlighting crosstalk between ER stress, translation, and organ pathology. Thus, GO:1902010 represents a convergence point for cell signaling, protein homeostasis, and disease mechanisms.
negative regulation of translation in response to endoplasmic reticulum stress At A Glance
| GO ID | GO:1902010 |
|---|---|
| GO term | negative regulation of translation in response to endoplasmic reticulum stress |
| Ontology | biological_process |
| Synonym | down-regulation of protein biosynthetic process involved in ER stress response |
| Major function | Attenuation of global protein synthesis during ER stress to restore proteostasis |
| Definition source | QuickGO |
| Related process | Unfolded protein response (UPR), integrated stress response (ISR) |
| Key effector | Phosphorylation of eIF2alpha |
| Cellular context | Cytosol and endoplasmic reticulum |
What Is GO:1902010?
GO:1902010, negative regulation of translation in response to endoplasmic reticulum stress, is defined as any process that stops, prevents, or reduces the frequency, rate, or extent of translation as a result of endoplasmic reticulum stress. In simpler terms, it is the cellular response that slows down protein production when the ER is under stress, helping the cell cope with misfolded protein accumulation.
Why Is negative regulation of translation in response to endoplasmic reticulum stress Important in Cell Biology?
This process is a central protective mechanism that allows cells to survive ER stress by reducing the burden of nascent proteins. Its dysregulation is implicated in a wide range of pathologies, including ischemia-reperfusion injury, diabetes, neurodegeneration, and cancer. Understanding how translation is negatively regulated during ER stress provides insights into fundamental cell biology and offers therapeutic targets for diseases characterized by proteostasis imbalance [1,2,5,7,8].
• Prevents accumulation of misfolded proteins in the ER lumen during stress.
• Conserves cellular energy and resources by halting non-essential protein synthesis.
• Enables selective translation of stress-responsive transcription factors such as ATF4.
• Protects against apoptosis in hepatic ischemia-reperfusion injury through GRINA-HRD1-ATF6 signaling.
• Modulates innate immunity by controlling the size of the activable STING pool via SEL1L-HRD1 ERAD.
• Preserves pancreatic beta-cell proteostasis by limiting proinsulin misfolding.
• Restrains inflammatory responses through ER-phagy receptor UBAC2.
• Contributes to the pathogenesis of diabetic kidney disease via ATF5 and mitochondrial UPR.
• Influences grain quality and yield in rice under thermotolerance conditions.
• Links glutamine sensing to cholesterol synthesis through translational control.
What Happens During negative regulation of translation in response to endoplasmic reticulum stress?
ER Stress Sensing and eIF2alpha Phosphorylation
In simple terms: When the ER gets stressed, a sensor kinase adds a phosphate tag to a translation initiation factor, which puts a brake on protein production.
ER stress is detected by three main sensors: PERK, ATF6, and IRE1. PERK, a kinase, oligomerizes and autophosphorylates, then phosphorylates the alpha subunit of eukaryotic initiation factor 2 (eIF2alpha) at serine 51. This phosphorylation converts eIF2alpha into a competitive inhibitor of eIF2B, the guanine nucleotide exchange factor that recycles eIF2-GDP to eIF2-GTP. As a result, ternary complex formation is impaired, and global translation initiation is rapidly attenuated.
Selective Translation of Stress-Response mRNAs
In simple terms: Even though most protein production stops, a few special proteins that help the cell survive are still made.
While global translation is reduced, specific mRNAs with upstream open reading frames (uORFs) in their 5' untranslated regions, such as ATF4, are preferentially translated. Under normal conditions, these uORFs inhibit downstream translation; during eIF2alpha phosphorylation, reduced ternary complex availability allows scanning ribosomes to bypass the inhibitory uORFs and initiate at the main start codon. This selective translation produces transcription factors that upregulate chaperones, ERAD components, and antioxidant genes to restore ER homeostasis.
ER-Associated Degradation (ERAD) and Translational Attenuation
In simple terms: The cell also ramps up a disposal system to remove misfolded proteins while slowing down new protein production.
The SEL1L-HRD1 ERAD complex plays a crucial role in degrading misfolded ER proteins and regulating immune signaling. SEL1L-HRD1 controls STING-mediated innate immunity by limiting the size of the activable STING pool, thereby preventing excessive inflammation. This ERAD function is coordinated with translational attenuation to maintain ER homeostasis. Additionally, GRINA enhances HRD1-mediated ubiquitination of ATF6, promoting its degradation and modulating the UPR.
ER-Phagy and Inflammatory Control
In simple terms: The cell can also eat parts of the ER to reduce stress and keep inflammation in check.
ER-phagy, a selective form of autophagy targeting the ER, is regulated by receptors such as UBAC2. UBAC2-mediated ER-phagy restrains inflammatory responses, linking ER turnover to translational control during stress. This process helps clear damaged ER and prevents chronic inflammation.
Integration with Mitochondrial UPR and Metabolic Sensing
In simple terms: ER stress responses talk to mitochondria and nutrient sensors to adjust metabolism.
ATF5 regulates the mitochondrial unfolded protein response (UPRmt) and is involved in tubulointerstitial injury in diabetic kidney disease. This indicates crosstalk between ER stress, mitochondrial stress, and translational regulation. Furthermore, glutamine sensing licenses cholesterol synthesis through mechanisms that may involve translational control, highlighting metabolic integration.
Key Genes Involved in GO:1902010 negative regulation of translation in response to endoplasmic reticulum stress
The following genes and proteins are central to the negative regulation of translation in response to ER stress, based on verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| EIF2AK3 (PERK) | ER stress sensor kinase that phosphorylates eIF2alpha | Key initiator of translational attenuation; target for UPR studies |
| EIF2S1 (eIF2alpha) | Subunit of eIF2; phosphorylation inhibits translation initiation | Central effector of translation repression; mutation at Ser51 blocks stress response |
| ATF4 | Transcription factor selectively translated during eIF2alpha phosphorylation | Master regulator of UPR target genes; biomarker of ER stress |
| ATF6 | ER stress sensor and transcription factor; regulated by HRD1-mediated ubiquitination | Modulates UPR and ERAD; linked to hepatic injury |
| HRD1 (SYVN1) | E3 ubiquitin ligase in ERAD; ubiquitinates ATF6 | Controls ATF6 stability and ER stress response |
| GRINA | ER-resident protein; enhances HRD1-mediated ATF6 ubiquitination | Protective role in hepatic ischemia-reperfusion injury |
| SEL1L | Component of SEL1L-HRD1 ERAD complex | Regulates STING immunity and ER homeostasis |
| STING (TMEM173) | Immune adaptor; regulated by SEL1L-HRD1 ERAD | Links ERAD to innate immunity |
| ATF5 | Transcription factor involved in mitochondrial UPR | Implicated in diabetic kidney disease |
| UBAC2 | ER-phagy receptor | Restrains inflammatory responses |
| BI-1 (TMBIM6) | Bax inhibitor-1; preserves pancreatic beta-cell proteostasis | Limits proinsulin misfolding and apoptosis |
| XBP1 | Transcription factor downstream of IRE1; spliced form regulates UPR genes | Not directly cited in provided list but part of UPR; use with caution |
| DDIT3 (CHOP) | Pro-apoptotic transcription factor induced by ER stress | Not directly cited in provided list; use with caution |
| GCN2 (EIF2AK4) | Kinase that phosphorylates eIF2alpha under amino acid starvation | Not directly cited in provided list; use with caution |
| HRI (EIF2AK1) | Kinase that phosphorylates eIF2alpha under heme deficiency | Not directly cited in provided list; use with caution |
| PKR (EIF2AK2) | Kinase that phosphorylates eIF2alpha in antiviral response | Not directly cited in provided list; use with caution |
| eIF2B | Guanine nucleotide exchange factor; inhibited by phosphorylated eIF2alpha | Not directly cited in provided list; use with caution |
| RPL/RPS | Ribosomal proteins; translation machinery | Not directly cited in provided list; use with caution |
How Is negative regulation of translation in response to endoplasmic reticulum stress Regulated?
The negative regulation of translation in response to ER stress is primarily regulated by the phosphorylation of eIF2alpha at Ser51 by stress-activated kinases, notably PERK. This phosphorylation event is tightly controlled by phosphatases such as GADD34/PP1, which dephosphorylate eIF2alpha to restore translation during recovery. Additionally, the ERAD machinery, including SEL1L-HRD1, regulates the stability of key UPR transcription factors like ATF6, thereby influencing the translational program [1,6]. ER-phagy receptor UBAC2 also modulates inflammatory responses that intersect with translational control. Metabolic cues, such as glutamine availability, can license cholesterol synthesis through pathways that may involve translational regulation.
negative regulation of translation in response to endoplasmic reticulum stress and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| GRINA | Hepatic ischemia-reperfusion injury | Liver-specific knockout or overexpression in mice |
| ATF5 | Diabetic kidney disease | Kidney tubule-specific knockout or transgenic mice |
| BI-1 (TMBIM6) | Pancreatic beta-cell dysfunction | Beta-cell-specific knockout or overexpression |
| SEL1L | Innate immunity and inflammation | Macrophage-specific knockout |
| UBAC2 | Inflammatory responses | Knockout or knock-in in immune cells |
Hepatic Ischemia-Reperfusion Injury
GRINA alleviates hepatic ischemia-reperfusion injury-induced apoptosis and ER-phagy by enhancing HRD1-mediated ATF6 ubiquitination. This pathway intersects with translational attenuation to protect hepatocytes from stress-induced death.
Diabetic Kidney Disease
ATF5 regulates tubulointerstitial injury in diabetic kidney disease via the mitochondrial unfolded protein response, indicating that ER stress and translational control contribute to renal pathology in diabetes.
Pancreatic Beta-Cell Dysfunction
Bax Inhibitor-1 (BI-1) preserves pancreatic beta-cell proteostasis by limiting proinsulin misfolding and programmed cell death. This suggests that translational regulation during ER stress is critical for beta-cell survival and insulin production.
Inflammatory and Immune Disorders
SEL1L-HRD1 ERAD controls STING-mediated innate immunity by limiting the size of the activable STING pool, and UBAC2-mediated ER-phagy restrains inflammatory responses. These findings link ER stress translation attenuation to immune regulation [6,8].
From negative regulation of translation in response to endoplasmic reticulum stress-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of GRINA affect ER stress-induced translation attenuation? | GRINA knockout hepatocytes or mouse liver |
| How does ATF5 contribute to diabetic kidney disease? | ATF5 knockout or overexpression in renal tubular cells |
| What is the role of BI-1 in beta-cell proteostasis? | BI-1 knockout or transgenic beta-cells |
| How does SEL1L-HRD1 ERAD regulate STING immunity? | SEL1L knockout macrophages |
| Does UBAC2-mediated ER-phagy control inflammation? | UBAC2 knockout or knock-in immune cells |
| Can point mutation of eIF2alpha Ser51 block translational control? | eIF2alpha S51A knock-in cells |
How to Study the negative regulation of translation in response to endoplasmic reticulum stress Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Ribo-seq | Genome-wide translation efficiency | Identify selectively translated mRNAs during ER stress |
| Polysome profiling | Distribution of mRNAs across ribosomes | Assess global translation initiation |
| Phospho-eIF2alpha Western blot | Activation of eIF2alpha | Monitor ER stress-induced translational attenuation |
| CRISPR knockout screen | Gene function in translation regulation | Discover novel regulators of ER stress response [6,8] |
| Proteomics | Protein abundance and modifications | Quantify changes in UPR and ERAD proteins [1,5] |
| Immunofluorescence | Subcellular localization of proteins | Visualize ATF6, HRD1, GRINA trafficking |
| qRT-PCR | mRNA levels of UPR targets | Measure transcriptional induction of ATF4, CHOP |
| ER-phagy flux assay | Autophagic degradation of ER | Study UBAC2-mediated ER turnover |
Ribosome Profiling (Ribo-seq)
Ribo-seq provides a genome-wide snapshot of translation by sequencing ribosome-protected mRNA fragments. It is used to quantify global translation attenuation and identify selectively translated mRNAs such as ATF4 during ER stress.
Polysome Profiling
Polysome profiling separates mRNAs by the number of ribosomes bound, allowing assessment of translation initiation efficiency. It can confirm eIF2alpha phosphorylation-mediated inhibition of ternary complex formation.
Western Blotting for Phospho-eIF2alpha
Immunoblotting with antibodies against phosphorylated eIF2alpha (Ser51) is a standard method to monitor activation of the translational attenuation pathway during ER stress.
CRISPR Screens and Functional Genomics
Genome-wide CRISPR knockout screens can identify genes that regulate translation under ER stress. Libraries targeting UPR components, ERAD, and autophagy pathways are particularly useful [6,8].
How CRISPR Can Be Used to Study GO:1902010 negative regulation of translation in response to endoplasmic reticulum stress
Knockout
CRISPR knockout of genes such as GRINA, ATF5, or SEL1L can reveal their essential roles in negative regulation of translation during ER stress. For example, GRINA knockout exacerbates hepatic ischemia-reperfusion injury, demonstrating its protective function.
Point Mutation
Introducing point mutations, such as eIF2alpha S51A, prevents phosphorylation and blocks translational attenuation. This is a powerful approach to dissect the necessity of specific phosphorylation events in the ER stress response.
Knock-in
Knock-in of tagged versions of proteins like ATF6 or HRD1 allows tracking of their localization, stability, and interactions during ER stress. This can clarify how ubiquitination regulates their function.
Overexpression
Overexpression of protective genes such as GRINA or BI-1 can ameliorate ER stress-induced damage. This approach is used to test therapeutic potential in disease models [1,7].
How EDITGENE Supports negative regulation of translation in response to endoplasmic reticulum stress Research
Researchers studying negative regulation of translation in response to endoplasmic reticulum stress-related genes often need to determine whether a candidate gene is causally involved in translational control, ER homeostasis, or disease progression. Precise genetic models are essential to move from correlation to causation.
Contact EDITGENE today to design your custom CRISPR model for negative regulation of translation in response to endoplasmic reticulum stress research.
Frequently Asked Questions About negative regulation of translation in response to endoplasmic reticulum stress
What is GO:1902010?
GO:1902010 is the Gene Ontology term for negative regulation of translation in response to endoplasmic reticulum stress, describing how cells reduce protein synthesis when the ER is stressed.
What genes are involved in negative regulation of translation in response to ER stress?
Key genes include EIF2AK3 (PERK), EIF2S1 (eIF2alpha), ATF4, ATF6, HRD1, GRINA, SEL1L, ATF5, UBAC2, and BI-1 [1,2,5,6,7,8].
How does ER stress inhibit translation?
ER stress activates PERK, which phosphorylates eIF2alpha, blocking ternary complex formation and globally attenuating translation initiation.
What is the role of ATF4 in ER stress translation?
ATF4 is selectively translated when eIF2alpha is phosphorylated, and it activates genes that help restore ER homeostasis.
Which diseases are linked to defective ER stress translation control?
Hepatic ischemia-reperfusion injury, diabetic kidney disease, pancreatic beta-cell dysfunction, and inflammatory disorders [1,5,7,8].
What is the integrated stress response (ISR)?
The ISR is a signaling pathway that converges on eIF2alpha phosphorylation to attenuate translation in response to various stresses, including ER stress.
How can I study negative regulation of translation in response to ER stress?
Use Ribo-seq, polysome profiling, phospho-eIF2alpha Western blotting, and CRISPR screens [2,6,8].
What CRISPR models are available for ER stress translation research?
Knockout, point mutation (e.g., eIF2alpha S51A), knock-in, and overexpression models can be custom-generated [1,2,7].
What is the role of GRINA in ER stress?
GRINA alleviates hepatic ischemia-reperfusion injury by enhancing HRD1-mediated ATF6 ubiquitination, linking ERAD to translational control.
How does SEL1L-HRD1 ERAD affect immunity?
SEL1L-HRD1 ERAD controls STING-mediated innate immunity by limiting the activable STING pool, connecting ER stress to immune regulation.
Conclusion
GO:1902010, negative regulation of translation in response to endoplasmic reticulum stress, is a fundamental biological process that protects cells from proteotoxic stress by attenuating global protein synthesis while allowing selective translation of stress-response factors. Its dysregulation is implicated in diverse diseases, from hepatic injury to diabetes and inflammation. Continued research using advanced CRISPR models and translation profiling will uncover new therapeutic opportunities.
References
- 1. Yu H et al.. 2025. GRINA alleviates hepatic ischemia‒reperfusion injury-induced apoptosis and ER-phagy by enhancing HRD1-mediated ATF6 ubiquitination.. J Hepatol 83(1):131-145 PMID: 39855351
- 2. Harding HP et al.. 2000. Regulated translation initiation controls stress-induced gene expression in mammalian cells.. Mol Cell 6(5):1099-108 PMID: 11106749
- 3. Li W et al.. 2025. A natural gene on-off system confers field thermotolerance for grain quality and yield in rice.. Cell 188(14):3661-3678.e21 PMID: 40311617
- 4. Garcia BM et al.. 2024. Glutamine sensing licenses cholesterol synthesis.. EMBO J 43(23):5837-5856 PMID: 39433901
- 5. Liu Y et al.. 2023. ATF5 regulates tubulointerstitial injury in diabetic kidney disease via mitochondrial unfolded protein response.. Mol Med 29(1):57 PMID: 37095454
- 6. Ji Y et al.. 2023. SEL1L-HRD1 endoplasmic reticulum-associated degradation controls STING-mediated innate immunity by limiting the size of the activable STING pool.. Nat Cell Biol 25(5):726-739 PMID: 37142791
- 7. Blanc M et al.. 2024. Bax Inhibitor-1 preserves pancreatic β-cell proteostasis by limiting proinsulin misfolding and programmed cell death.. Cell Death Dis 15(5):334 PMID: 38744890
- 8. He X et al.. 2024. ER-phagy restrains inflammatory responses through its receptor UBAC2.. EMBO J 43(21):5057-5084 PMID: 39284914
