GO:0035306 positive regulation of dephosphorylation: Signaling Control, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0035306 describes any process that activates or increases the removal of phosphate groups from a target molecule, thereby amplifying dephosphorylation-dependent signaling.
• Positive regulation of dephosphorylation is essential for controlling protein activity, localization, and stability in processes ranging from neuronal survival to plant stress tolerance.
• Key effectors include protein phosphatases such as PP2A, which can positively regulate Raf1-MEK1/2-ERK1/2 signaling by dephosphorylating inhibitory sites.
• Dysregulation of dephosphorylation contributes to acute kidney injury, neurodegeneration, and cancer through proteins like PGAM5 and Six2.
• CRISPR knockout, point-mutation, knock-in, and overexpression models enable precise interrogation of dephosphorylation regulatory nodes.
• EDITGENE provides end-to-end CRISPR services, including library screening and bioinformatics, to dissect positive regulation of dephosphorylation in disease models.
Description
Positive regulation of dephosphorylation (GO:0035306) is a biological process that increases the frequency, rate, or extent of phosphate group removal from a target molecule. This regulatory term captures the upstream events that activate or enhance dephosphorylation, rather than the catalytic act itself. It is critical because reversible phosphorylation is a central switch in signal transduction, and the positive regulation of dephosphorylation ensures timely inactivation or activation of key signaling proteins. For researchers, understanding this process illuminates how cells reset signaling circuits, respond to stress, and maintain homeostasis. For example, positive regulation of dephosphorylation of Six2Y129 protects tyrosine hydroxylase-positive cells in the substantia nigra pars compacta by regulating TEA domain 1 expression, linking this process to neuronal survival. Similarly, in plants, stress-induced nuclear translocation of ONAC023 improves drought and heat tolerance through multiple processes that include dephosphorylation events. These examples underscore the broad biological and translational relevance of GO:0035306.
positive regulation of dephosphorylation At A Glance
| GO ID | GO:0035306 |
|---|---|
| GO term | positive regulation of dephosphorylation |
| Ontology | biological_process |
| Synonym | activation of dephosphorylation; stimulation of dephosphorylation; up regulation of dephosphorylation; up-regulation of dephosphorylation; upregulation of dephosphorylation |
| Major function | Increases the removal of phosphate groups from target molecules, thereby modulating protein activity, interactions, and signaling pathways. |
| Related processes | Regulation of protein phosphatase activity, signal transduction, cellular stress responses, and developmental processes. |
| Example effectors | Protein phosphatase 2A (PP2A), PGAM5, and other phosphatases or regulatory subunits that promote dephosphorylation. |
| Disease relevance | Acute kidney injury, neurodegeneration, cancer, and metabolic disorders. |
What Is GO:0035306?
GO:0035306, positive regulation of dephosphorylation, refers to any process that activates or increases the frequency, rate, or extent of the removal of phosphate groups from a molecule. It encompasses molecular events that stimulate phosphatase activity, recruit phosphatases to substrates, or relieve inhibition of dephosphorylation, thereby promoting the conversion of phosphorylated substrates to their dephosphorylated forms.
Why Is positive regulation of dephosphorylation Important in Cell Biology?
Positive regulation of dephosphorylation is a fundamental control point in cellular signaling because it determines the duration and amplitude of phosphorylation-dependent signals. By promoting the removal of phosphate groups, this process can switch off kinase cascades, reset receptors, and modulate the activity of transcription factors and metabolic enzymes. Its importance is highlighted by the fact that dysregulated dephosphorylation contributes to diseases such as acute kidney injury, where PGAM5 dephosphorylates Bax to trigger mitochondrial DNA release and inflammation, and in neuronal survival, where dephosphorylation of Six2Y129 protects dopaminergic neurons. Thus, understanding GO:0035306 provides mechanistic insights and therapeutic opportunities.
• Controls the inactivation or activation of signaling proteins, including kinases and transcription factors.
• Essential for neuronal survival and function, as shown for Six2 dephosphorylation in tyrosine hydroxylase-positive cells.
• Modulates plant stress responses, including drought and heat tolerance via ONAC023.
• Drives inflammatory pathways in acute kidney injury through PGAM5-mediated Bax dephosphorylation.
• Regulates cell cycle progression and apoptosis by altering the phosphorylation state of key regulators.
• Impacts cancer biology by fine-tuning oncogenic signaling such as Raf1-MEK1/2-ERK1/2.
• Influences metabolic homeostasis through dephosphorylation of metabolic enzymes.
• Provides targets for therapeutic intervention in neurodegeneration, kidney disease, and cancer.
• Enables precise experimental dissection using CRISPR-based models.
• Underpins the development of bioinformatics tools to predict phosphatase-substrate networks.
What Happens During positive regulation of dephosphorylation?
Activation of Protein Phosphatases
In simple terms: This step turns on the enzymes that remove phosphate groups.
Positive regulation of dephosphorylation often begins with the activation of protein phosphatases, such as PP2A. For instance, PP2A holoenzymes can positively regulate Raf1-MEK1/2-ERK1/2 signaling by dephosphorylating inhibitory sites on Raf1, thereby enhancing pathway activity. Activation may involve post-translational modifications, subunit exchange, or interaction with regulatory proteins that relieve autoinhibition.
Recruitment of Phosphatases to Substrates
In simple terms: The active phosphatases are guided to the right target proteins.
Once activated, phosphatases must be recruited to specific substrates. This can occur through scaffolding proteins, targeting subunits, or direct interaction with phosphorylated substrates. For example, the EDR1-PP2A phospho-regulatory module fine-tunes MYC2-mediated plant disease resistance by directing PP2A activity to specific targets. Such recruitment ensures substrate specificity and spatial control of dephosphorylation.
Dephosphorylation of Target Proteins
In simple terms: The phosphate groups are actually removed from the target molecules.
The catalytic removal of phosphate groups alters the target protein's activity, localization, or stability. In acute kidney injury, PGAM5 dephosphorylates the pro-apoptotic protein Bax, triggering mitochondrial DNA release and inflammation. Similarly, dephosphorylation of Six2Y129 protects tyrosine hydroxylase-positive cells by regulating TEA domain 1 expression. These events demonstrate how dephosphorylation can have profound functional consequences.
Feedback and Crosstalk with Kinases
In simple terms: The process is balanced by opposing kinase activities and feedback loops.
Positive regulation of dephosphorylation is often intertwined with kinase signaling. For example, receptor phosphorylation regulates transmembrane signaling, and dephosphorylation provides a reset mechanism. In Hutchinson-Gilford progeria syndrome, p300 nucleocytoplasmic shuttling underlies mTORC1 hyperactivation, highlighting crosstalk between phosphorylation and dephosphorylation pathways. Such feedback ensures dynamic and reversible control of cellular responses.
Downstream Cellular Outcomes
In simple terms: The ultimate effects on cell behavior and physiology.
The cumulative effect of positive regulation of dephosphorylation can be cell survival, stress tolerance, or immune regulation. For instance, stress-induced nuclear translocation of ONAC023 improves drought and heat tolerance in rice through multiple processes, including dephosphorylation events. In liver development, genome-wide identification of microRNA targets reveals positive regulation of the Hippo pathway by miR-122, which may involve dephosphorylation of Hippo pathway components. These outcomes illustrate the broad physiological impact of this process.
Key Genes Involved in GO:0035306 positive regulation of dephosphorylation
The following genes and proteins are central to the positive regulation of dephosphorylation, as supported by the verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| PP2A | Protein phosphatase 2A holoenzymes positively regulate Raf1-MEK1/2-ERK1/2 signaling by dephosphorylating inhibitory sites. | Key model for studying phosphatase-mediated activation of kinase cascades. |
| Six2 | Dephosphorylation of Six2Y129 protects tyrosine hydroxylase-positive cells in SNpc by regulating TEA domain 1 expression. | Target for neurodegeneration research and neuronal survival. |
| PGAM5 | Dephosphorylates Bax to trigger mitochondrial DNA release and inflammation in acute kidney injury. | Therapeutic target for kidney injury and inflammation. |
| ONAC023 | Stress-induced nuclear translocation improves drought and heat tolerance through multiple processes. | Model for plant stress tolerance and dephosphorylation signaling. |
| EDR1 | Part of the EDR1-PP2A phospho-regulatory module that fine-tunes MYC2-mediated plant disease resistance. | Studying plant immunity and phosphatase regulation. |
| p300 | Nucleocytoplasmic shuttling underlies mTORC1 hyperactivation in Hutchinson-Gilford progeria syndrome. | Link between dephosphorylation, aging, and mTORC1 signaling. |
| miR-122 | Genome-wide identification of microRNA targets reveals positive regulation of the Hippo pathway by miR-122 during liver development. | Role of microRNAs in dephosphorylation-related pathways. |
| Receptor kinases | Regulation of transmembrane signaling by receptor phosphorylation. | Understanding dephosphorylation in receptor desensitization. |
| Bax | Pro-apoptotic protein dephosphorylated by PGAM5, leading to mitochondrial DNA release. | Apoptosis and inflammation research. |
| TEA domain 1 | Regulated by Six2 dephosphorylation, affecting tyrosine hydroxylase-positive cells. | Transcriptional control in neuronal cells. |
| MYC2 | Transcription factor fine-tuned by EDR1-PP2A module in plant disease resistance. | Plant defense signaling. |
| mTORC1 | Hyperactivated in progeria due to p300 shuttling, involving dephosphorylation events. | Metabolic and aging research. |
| Hippo pathway components | Positively regulated by miR-122 during liver development. | Liver development and cancer. |
| Tyrosine hydroxylase | Protected by Six2 dephosphorylation in SNpc. | Parkinson's disease research. |
| PP2A regulatory subunits | Determine substrate specificity and activation of PP2A. | Biochemical and structural studies. |
How Is positive regulation of dephosphorylation Regulated?
The positive regulation of dephosphorylation is itself tightly regulated. Upstream signals such as stress, growth factors, and developmental cues can activate phosphatases or recruit them to specific substrates. For example, stress-induced nuclear translocation of ONAC023 in rice leads to dephosphorylation events that enhance drought and heat tolerance. In mammalian cells, mTORC1 hyperactivation in Hutchinson-Gilford progeria syndrome is linked to p300 nucleocytoplasmic shuttling, which may alter dephosphorylation dynamics. Additionally, microRNAs such as miR-122 can positively regulate the Hippo pathway, potentially by modulating phosphatase expression or activity. These layers of regulation ensure that dephosphorylation occurs at the right time and place.
positive regulation of dephosphorylation and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| Six2 | Neurodegeneration, Parkinson's disease | Knock-in mice with phospho-mutant Six2Y129; neuronal cell lines |
| PGAM5 | Acute kidney injury, inflammation | Pgam5 knockout mice; kidney organoids |
| PP2A | Cancer, MAPK pathway dysregulation | CRISPR knockout of PP2A subunits in cancer cell lines |
| p300 | Hutchinson-Gilford progeria syndrome | Patient-derived iPSCs with p300 mutations |
| miR-122 | Liver development, hepatocellular carcinoma | miR-122 knockout mice; liver cancer cell lines |
Neurodegeneration and Neuronal Survival
Dephosphorylation of Six2Y129 protects tyrosine hydroxylase-positive cells in the substantia nigra pars compacta by regulating TEA domain 1 expression. This suggests that positive regulation of dephosphorylation is critical for neuronal survival and may be relevant to Parkinson's disease and other neurodegenerative disorders. Experimental models using CRISPR to mimic or block Six2 dephosphorylation could elucidate protective mechanisms.
Acute Kidney Injury and Inflammation
PGAM5 initiates inflammation in acute kidney injury by triggering mitochondrial DNA release through dephosphorylation of the pro-apoptotic protein Bax. This directly links positive regulation of dephosphorylation to kidney disease pathogenesis. Targeting PGAM5 or its regulatory network could offer therapeutic strategies for acute kidney injury.
Cancer Signaling
PP2A holoenzymes positively regulate Raf1-MEK1/2-ERK1/2 signaling by dephosphorylating inhibitory sites, which can influence cell proliferation and oncogenesis. Dysregulation of this dephosphorylation event may contribute to cancers with aberrant MAPK pathway activation. Additionally, miR-122 positively regulates the Hippo pathway during liver development, a pathway often dysregulated in liver cancer.
Aging and Progeria
In Hutchinson-Gilford progeria syndrome, p300 nucleocytoplasmic shuttling underlies mTORC1 hyperactivation, implicating dephosphorylation-dependent processes in premature aging. Understanding how positive regulation of dephosphorylation contributes to this disease may reveal new therapeutic targets.
From positive regulation of dephosphorylation-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of PGAM5 protect against acute kidney injury? | Pgam5 knockout mouse model |
| Does phospho-mimetic Six2Y129 affect neuronal survival? | Knock-in mice expressing Six2Y129D or Six2Y129A |
| How does PP2A dephosphorylation of Raf1 regulate ERK signaling? | Point mutations in Raf1 phospho-sites; PP2A subunit knockout cells |
| What is the role of ONAC023 in drought tolerance? | Overexpression and knockout rice lines |
| Can miR-122 modulate Hippo pathway via dephosphorylation? | miR-122 overexpression and knockout liver cell lines |
| Does p300 shuttling alter mTORC1 activity in progeria? | Knock-in of progerin in human fibroblasts |
How to Study the positive regulation of dephosphorylation Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Phosphoproteomics | Global changes in protein phosphorylation | Identifying dephosphorylation substrates and pathways |
| CRISPR knockout screening | Gene essentiality and pathway modifiers | Discovering regulators of dephosphorylation |
| Western blot with phospho-specific antibodies | Levels of specific phosphorylated proteins | Validating dephosphorylation of targets like Raf1 or Bax |
| Immunofluorescence | Subcellular localization of proteins | Tracking nuclear translocation of ONAC023 or Six2 |
| Co-immunoprecipitation | Protein-protein interactions | Detecting phosphatase-substrate complexes |
| RNA-seq | Transcriptional changes | Assessing downstream effects of dephosphorylation |
| Bioinformatics pathway enrichment | Overrepresented pathways | Linking dephosphorylation to biological processes |
Phosphoproteomics
Mass spectrometry-based phosphoproteomics allows global identification of dephosphorylation events and their regulation. By comparing wild-type and mutant cells, researchers can quantify changes in phosphorylation stoichiometry. This method is powerful for discovering substrates of phosphatases such as PP2A and PGAM5.
CRISPR Screening
Genome-wide CRISPR knockout or activation screens can identify genes that positively regulate dephosphorylation. For example, screening for modifiers of ERK signaling may reveal regulators of PP2A-mediated dephosphorylation. Such screens are unbiased and can uncover novel components of the dephosphorylation machinery.
Live-Cell Imaging
Fluorescent biosensors and FRET-based reporters can monitor dephosphorylation dynamics in real time. For instance, tracking the translocation of ONAC023 or the dephosphorylation of Six2 can provide spatial and temporal insights. This approach is ideal for studying rapid signaling events.
Bioinformatics and Pathway Analysis
Computational tools integrate phosphoproteomic data with pathway databases to predict kinase-phosphatase networks. Genome-wide identification of microRNA targets, such as miR-122, can reveal positive regulators of dephosphorylation in specific contexts. These analyses guide experimental validation.
How CRISPR Can Be Used to Study GO:0035306 positive regulation of dephosphorylation
Knockout
CRISPR knockout of genes encoding phosphatases or their regulators can abolish positive regulation of dephosphorylation. For example, knocking out PP2A subunits would prevent dephosphorylation of Raf1 and alter ERK signaling. Similarly, Pgam5 knockout mice are used to study acute kidney injury. Knockout models are essential for loss-of-function studies.
Point Mutation
Point mutations can mimic or prevent phosphorylation at specific residues. For instance, mutating Six2Y129 to a non-phosphorylatable or phospho-mimetic form allows dissection of its dephosphorylation-dependent functions. Such models are invaluable for understanding site-specific regulation.
Knock-in
Knock-in of tagged or mutant alleles enables precise tracking and functional analysis. For example, knocking in a fluorescent tag on ONAC023 can reveal its stress-induced nuclear translocation. Knock-in models also allow expression of disease-associated variants under endogenous regulatory control.
Overexpression
Overexpression of phosphatases or their activators can enhance dephosphorylation. For example, overexpressing miR-122 positively regulates the Hippo pathway during liver development. Overexpression studies help establish sufficiency and identify downstream consequences.
How EDITGENE Supports positive regulation of dephosphorylation Research
Researchers studying positive regulation of dephosphorylation-related genes often need to determine whether a candidate gene is causally involved in a specific signaling or disease context. This requires precise genetic models that can manipulate gene function at the DNA, RNA, or protein level. EDITGENE provides a comprehensive suite of CRISPR-based services to accelerate such investigations.
Contact EDITGENE today to design your custom CRISPR model for positive regulation of dephosphorylation research.
Frequently Asked Questions About positive regulation of dephosphorylation
What is GO:0035306 positive regulation of dephosphorylation?
GO:0035306 is a Gene Ontology biological process term that describes any process that activates or increases the frequency, rate, or extent of removal of phosphate groups from a molecule.
What genes are involved in positive regulation of dephosphorylation?
Key genes include PP2A, Six2, PGAM5, ONAC023, EDR1, p300, and miR-122, as shown in studies of signaling, stress responses, and disease.
How does positive regulation of dephosphorylation affect neuronal survival?
Dephosphorylation of Six2Y129 protects tyrosine hydroxylase-positive cells in the substantia nigra pars compacta by regulating TEA domain 1 expression, suggesting a role in Parkinson's disease.
What is the role of PGAM5 in acute kidney injury?
PGAM5 initiates inflammation in acute kidney injury by dephosphorylating the pro-apoptotic protein Bax, leading to mitochondrial DNA release.
How is PP2A involved in dephosphorylation?
PP2A holoenzymes positively regulate Raf1-MEK1/2-ERK1/2 signaling by dephosphorylating inhibitory sites on Raf1.
Can CRISPR be used to study positive regulation of dephosphorylation?
Yes, CRISPR knockout, point mutation, knock-in, and overexpression models allow precise manipulation of genes involved in dephosphorylation pathways.
What diseases are linked to dephosphorylation dysregulation?
Diseases include acute kidney injury, neurodegeneration, cancer, and Hutchinson-Gilford progeria syndrome.
How does ONAC023 improve drought tolerance?
Stress-induced nuclear translocation of ONAC023 improves drought and heat tolerance through multiple processes, including dephosphorylation events.
What methods are used to study dephosphorylation?
Phosphoproteomics, CRISPR screening, live-cell imaging, and bioinformatics are commonly used to study dephosphorylation and its regulation.
What services does EDITGENE offer for dephosphorylation research?
EDITGENE provides knockout, point mutation, knock-in, overexpression cell models, CRISPR library screening, and bioinformatics services to study positive regulation of dephosphorylation.
Conclusion
Positive regulation of dephosphorylation (GO:0035306) is a pivotal biological process that controls the removal of phosphate groups from target molecules, thereby shaping signal transduction, stress responses, and disease outcomes. From neuronal survival mediated by Six2 dephosphorylation to inflammation driven by PGAM5 in kidney injury, the importance of this process is evident across diverse physiological and pathological contexts. Advances in CRISPR-based models and phosphoproteomics are accelerating our understanding of how dephosphorylation is positively regulated. EDITGENE stands ready to support researchers with tailored CRISPR services to dissect these mechanisms and translate them into therapeutic strategies.
References
- 1. Zhang CT et al.. 2023. Dephosphorylation of Six2Y129 protects tyrosine hydroxylase-positive cells in SNpc by regulating TEA domain 1 expression.. iScience 26(7):107049 PMID: 37534182
- 2. Chang Y et al.. 2024. Stress-induced nuclear translocation of ONAC023 improves drought and heat tolerance through multiple processes in rice.. Nat Commun 15(1):5877 PMID: 38997294
- 3. Li J et al.. 2023. Phosphoglycerate mutase 5 initiates inflammation in acute kidney injury by triggering mitochondrial DNA release by dephosphorylating the pro-apoptotic protein Bax.. Kidney Int 103(1):115-133 PMID: 36089186
- 4. Adams DG et al.. 2005. Positive regulation of Raf1-MEK1/2-ERK1/2 signaling by protein serine/threonine phosphatase 2A holoenzymes.. J Biol Chem 280(52):42644-54 PMID: 16239230
- 5. Zhong G et al.. 2026. The EDR1-PP2A phospho-regulatory module fine-tunes MYC2-mediated plant disease resistance.. Plant Cell 38(1) PMID: 41411321
- 6. Son SM et al.. 2024. p300 nucleocytoplasmic shuttling underlies mTORC1 hyperactivation in Hutchinson-Gilford progeria syndrome.. Nat Cell Biol 26(2):235-249 PMID: 38267537
- 7. Zhang Y et al.. 2021. Genome-wide identification of microRNA targets reveals positive regulation of the Hippo pathway by miR-122 during liver development.. Cell Death Dis 12(12):1161 PMID: 34907157
- 8. Sibley DR et al.. 1987. Regulation of transmembrane signaling by receptor phosphorylation.. Cell 48(6):913-22 PMID: 3030559
