GO:0047545 (S)-2-hydroxyglutarate dehydrogenase activity: Mechanism, Genes and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0047545 describes the enzymatic activity that converts (S)-2-hydroxyglutarate to 2-oxoglutarate using an electron acceptor, a central step in S-2HG catabolism.
• The oncometabolite S-2HG accumulates when this activity is lost, inhibiting 2-oxoglutarate-dependent dioxygenases and altering epigenetic and hypoxic signaling.
• L2HGDH is the principal enzyme responsible for S-2HG oxidation, and its loss causes macrophage polarization changes and antitumor immunity defects.
• S-2HG produced by LDH-C in the testis and by hypoxic or mitochondrial dysfunction conditions can regulate CD8+ T-lymphocyte fate and endothelial quiescence.
• Studying GO:0047545 requires integrating enzymatic assays, metabolomics, and CRISPR-based models to dissect S-2HG catabolism in cancer, immunity, and metabolism.
• Precise CRISPR knockout, knock-in, and overexpression models enable causal testing of S-2HG dehydrogenase genes in disease-relevant cell types.
Description
GO:0047545, (S)-2-hydroxyglutarate dehydrogenase activity, is a molecular function that catalyzes the oxidation of (S)-2-hydroxyglutarate (S-2HG) to 2-oxoglutarate (2-OG) with concomitant reduction of an electron acceptor. This activity is central to the catabolism of the oncometabolite S-2HG, a metabolite whose accumulation has been linked to cancer, immune dysfunction, and metabolic reprogramming. Because S-2HG inhibits 2-OG-dependent dioxygenases, including TET enzymes and prolyl hydroxylases, the enzyme activity defined by GO:0047545 directly influences epigenetic landscapes and cellular oxygen sensing. Researchers studying this term aim to understand how S-2HG levels are controlled, how loss of this activity contributes to disease, and how it can be targeted therapeutically. The activity is encoded by genes such as L2HGDH, and its functional characterization relies on metabolomic, enzymatic, and CRISPR-based approaches.
(S)-2-hydroxyglutarate dehydrogenase activity At A Glance
| GO ID | GO:0047545 |
|---|---|
| GO term | (S)-2-hydroxyglutarate dehydrogenase activity |
| Ontology | molecular_function |
| Synonym | 2-hydroxyglutarate dehydrogenase activity; alpha-hydroxyglutarate dehydrogenase activity; L-alpha-hydroxyglutarate dehydrogenase activity; (S)-2-hydroxyglutarate:acceptor 2-oxidoreductase |
| Definition | Catalysis of the reaction: (S)-2-hydroxyglutarate + acceptor = 2-oxoglutarate + reduced acceptor. |
| Major function | Oxidation of (S)-2-hydroxyglutarate to 2-oxoglutarate, reducing an electron acceptor. |
| Related metabolites | (S)-2-hydroxyglutarate, 2-oxoglutarate |
| Cellular context | Mitochondrial and cytosolic metabolism; involved in S-2HG catabolism. |
What Is GO:0047545?
According to the Gene Ontology, GO:0047545 is defined as the catalysis of the reaction: (S)-2-hydroxyglutarate + acceptor = 2-oxoglutarate + reduced acceptor. In other words, it is the enzyme activity that removes electrons from (S)-2-hydroxyglutarate, converting it to 2-oxoglutarate while reducing an electron acceptor. This activity is synonymous with 2-hydroxyglutarate dehydrogenase, alpha-hydroxyglutarate dehydrogenase, and L-alpha-hydroxyglutarate dehydrogenase, among other names. It is a molecular function term, meaning it describes what a protein does at the biochemical level rather than a biological process or cellular location.
Why Is (S)-2-hydroxyglutarate dehydrogenase activity Important in Cell Biology?
GO:0047545 is important because it governs the cellular levels of (S)-2-hydroxyglutarate, a metabolite that acts as an oncometabolite and signaling molecule. When this activity is impaired, S-2HG accumulates and inhibits 2-oxoglutarate-dependent dioxygenases, leading to altered DNA and histone methylation, disrupted hypoxia signaling, and changes in immune cell function. The enzyme activity is also critical for normal physiological processes, including testicular metabolism and endothelial quiescence. Understanding GO:0047545 therefore has broad implications for cancer biology, immunometabolism, and metabolic disorders.
• Controls the catabolism of the oncometabolite S-2HG, preventing its accumulation.
• Regulates 2-oxoglutarate-dependent dioxygenases, including TET enzymes and prolyl hydroxylases.
• Influences CD8+ T-lymphocyte fate and antitumor immunity.
• Supports endothelial quiescence through FOXO-regulated metabolites.
• Plays a role in testicular metabolism via LDH-C-mediated S-2HG production.
• Linked to mitochondrial dysfunction and rotenone-induced S-2HG increases in neurons.
• Relevant to cardiac hypertrophy and central carbon metabolism remodeling.
• Provides a potential therapeutic target for cancers with S-2HG accumulation.
• Enables metabolic reprogramming studies in immune and endothelial cells.
• Requires precise CRISPR models to dissect gene function in disease contexts.
What Happens During (S)-2-hydroxyglutarate dehydrogenase activity?
Substrate recognition and binding
In simple terms: The enzyme grabs (S)-2-hydroxyglutarate and holds it in place.
The activity defined by GO:0047545 begins with the specific binding of (S)-2-hydroxyglutarate to the enzyme active site. This step ensures stereospecific recognition, as the enzyme acts on the S enantiomer rather than the R form. The binding is coupled to the availability of an electron acceptor, which is required for the subsequent oxidation reaction.
Oxidation and 2-oxoglutarate formation
In simple terms: The enzyme removes electrons from S-2HG, turning it into 2-oxoglutarate.
Following substrate binding, the enzyme catalyzes the oxidation of (S)-2-hydroxyglutarate to 2-oxoglutarate. This reaction involves the transfer of electrons to an acceptor, resulting in a reduced acceptor. The conversion is a key step in S-2HG catabolism, and its impairment leads to S-2HG accumulation, which can inhibit 2-oxoglutarate-dependent dioxygenases.
Electron acceptor coupling
In simple terms: The electrons removed from S-2HG are passed to another molecule.
The reaction requires an electron acceptor, which becomes reduced as (S)-2-hydroxyglutarate is oxidized. The identity of the physiological acceptor may vary, but the coupling is essential for the catalytic cycle. This redox coupling links S-2HG catabolism to cellular redox balance and mitochondrial function.
Integration with cellular metabolism
In simple terms: This activity connects S-2HG breakdown to the broader metabolic network.
The product, 2-oxoglutarate, is a central metabolite in the tricarboxylic acid cycle and a co-substrate for dioxygenases. Thus, GO:0047545 activity influences both energy metabolism and epigenetic regulation. In immune cells, loss of this activity alters macrophage polarization and antitumor immunity, while in endothelial cells it affects quiescence.
Key Genes Involved in GO:0047545 (S)-2-hydroxyglutarate dehydrogenase activity
The following genes and proteins are directly or indirectly associated with (S)-2-hydroxyglutarate dehydrogenase activity and its biological context.
| Gene | Major Role | Research Relevance |
|---|---|---|
| L2HGDH | Primary enzyme catalyzing S-2HG oxidation | Loss causes S-2HG accumulation and affects macrophage polarization |
| LDHC | Produces S-2HG in testis | Testis-specific S-2HG production |
| FOXO | Regulates metabolites controlling endothelial quiescence | Links S-2HG metabolism to endothelial function |
| TET1/2 | 2-OG-dependent dioxygenases inhibited by S-2HG | Epigenetic regulation |
| EGLN1 (PHD2) | Prolyl hydroxylase inhibited by S-2HG | Hypoxia signaling |
| KDM4A | Histone demethylase inhibited by S-2HG | Chromatin regulation |
| IDH1 | Produces 2-HG when mutated | Oncometabolite production |
| IDH2 | Produces 2-HG when mutated | Oncometabolite production |
| MYC | Regulates metabolism and S-2HG levels | Cancer metabolism |
| HIF1A | Hypoxia-inducible factor, affected by S-2HG | Hypoxic response |
| LDHA | Lactate dehydrogenase, related to S-2HG production | Metabolic reprogramming |
| GOT1 | Aspartate aminotransferase, linked to 2-OG metabolism | Central carbon metabolism |
| GOT2 | Mitochondrial aspartate aminotransferase | Metabolic flux |
| MDH2 | Malate dehydrogenase, TCA cycle | Mitochondrial metabolism |
| SDHA | Succinate dehydrogenase, TCA cycle | Mitochondrial function |
| NDUFS1 | Complex I subunit, affected by rotenone | Mitochondrial dysfunction |
| PPARGC1A | Mitochondrial biogenesis regulator | Cardiac hypertrophy |
| SLC25A1 | Mitochondrial citrate carrier | Metabolic remodeling |
How Is (S)-2-hydroxyglutarate dehydrogenase activity Regulated?
The activity of (S)-2-hydroxyglutarate dehydrogenase is regulated at multiple levels. Expression of L2HGDH, the primary enzyme, can be influenced by cellular metabolic state and stress. Mitochondrial dysfunction, such as that induced by rotenone, increases S-2HG levels, suggesting that electron transport chain activity modulates the flux through this pathway. Additionally, FOXO transcription factors regulate metabolites that control endothelial quiescence, indirectly affecting S-2HG metabolism. In cancer cells, oncogenic signaling and hypoxia can alter S-2HG production and catabolism.
(S)-2-hydroxyglutarate dehydrogenase activity and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| L2HGDH | Cancer, immune evasion | L2HGDH knockout macrophages |
| IDH1/2 | Glioma, leukemia | Mutant IDH knock-in cells |
| LDHC | Testicular metabolism | LDHC knockout mouse testis |
| FOXO | Endothelial dysfunction | FOXO knockout endothelial cells |
| NDUFS1 | Neurodegeneration | Rotenone-treated SH-SY5Y cells |
Cancer and oncometabolite accumulation
Loss of (S)-2-hydroxyglutarate dehydrogenase activity leads to accumulation of S-2HG, an oncometabolite that inhibits 2-oxoglutarate-dependent dioxygenases such as TET enzymes and prolyl hydroxylases. This inhibition results in DNA hypermethylation and activation of hypoxic signaling, contributing to tumorigenesis. Mutations in IDH1 and IDH2 can also produce 2-HG, further linking this pathway to cancer.
Immune dysfunction and antitumor immunity
In macrophages, blockage of L2HGDH-mediated S-2HG catabolism alters polarization and elicits antitumor immunity. This suggests that GO:0047545 activity is critical for immune cell function and that its dysregulation can impact cancer immunotherapy. S-2HG also regulates CD8+ T-lymphocyte fate, influencing adaptive immune responses.
Cardiovascular and metabolic disorders
S-2HG metabolism is linked to endothelial quiescence through FOXO-regulated metabolites. In cardiac hypertrophy, central carbon metabolism is remodeled, and enzymes related to 2-oxoglutarate metabolism show altered expression. These findings implicate GO:0047545 in cardiovascular and metabolic pathologies.
Neurodegeneration and mitochondrial dysfunction
Rotenone, a mitochondrial complex I inhibitor, stereospecifically increases (S)-2-hydroxyglutarate in neuronal cells, linking mitochondrial dysfunction to S-2HG accumulation. This suggests that impaired (S)-2-hydroxyglutarate dehydrogenase activity may contribute to neurodegeneration through metabolic stress.
From (S)-2-hydroxyglutarate dehydrogenase activity-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of L2HGDH increase S-2HG and alter macrophage polarization? | L2HGDH knockout in macrophages |
| Does mutant IDH produce S-2HG and affect epigenetics? | IDH1 R132H knock-in cells |
| How does S-2HG regulate CD8+ T cell fate? | S-2HG treatment or L2HGDH overexpression in T cells |
| Does FOXO regulate S-2HG metabolism in endothelium? | FOXO knockout endothelial cells |
| Does rotenone increase S-2HG in neurons? | SH-SY5Y cells treated with rotenone |
| What is the role of L2HGDH in cardiac hypertrophy? | L2HGDH knockout cardiomyocytes |
How to Study the (S)-2-hydroxyglutarate dehydrogenase activity Process
| Method | What It Measures | Typical Application |
|---|---|---|
| LC-MS metabolomics | S-2HG and 2-OG levels | Quantifying metabolite changes |
| Enzymatic assay | Dehydrogenase activity | Confirming GO:0047545 function |
| CRISPR knockout screens | Gene essentiality and regulators | Identifying S-2HG pathway genes |
| RNA-seq | Transcriptional changes | Assessing downstream effects |
| Bisulfite sequencing | DNA methylation | TET inhibition by S-2HG |
| Seahorse respirometry | Mitochondrial function | Linking metabolism to S-2HG |
| Western blot | Protein expression | Validating knockouts |
| Immunofluorescence | Protein localization | Subcellular distribution |
Metabolomics and S-2HG quantification
Liquid chromatography-mass spectrometry (LC-MS) is used to measure (S)-2-hydroxyglutarate levels in cells and tissues. This method allows researchers to assess the impact of genetic perturbations on S-2HG accumulation. Stable isotope tracing can further elucidate flux through the dehydrogenase reaction.
Enzymatic activity assays
In vitro assays using recombinant L2HGDH can directly measure the conversion of (S)-2-hydroxyglutarate to 2-oxoglutarate by monitoring acceptor reduction. These assays are essential for confirming the biochemical function defined by GO:0047545.
CRISPR-based genetic screens
Genome-wide CRISPR knockout screens can identify genes that regulate S-2HG levels or modify the effects of its accumulation. Such screens are powerful for discovering novel regulators of this metabolic pathway.
Epigenomic and transcriptomic profiling
Because S-2HG inhibits TET enzymes, DNA methylation and gene expression changes can be assessed by bisulfite sequencing and RNA-seq. These methods link GO:0047545 activity to epigenetic and transcriptional outcomes.
How CRISPR Can Be Used to Study GO:0047545 (S)-2-hydroxyglutarate dehydrogenase activity
Knockout
CRISPR knockout of L2HGDH or other genes encoding (S)-2-hydroxyglutarate dehydrogenase activity can be used to model loss of function. Such knockouts lead to S-2HG accumulation and can reveal downstream effects on immune cell polarization and tumor growth. Knockout models are essential for establishing causality between the enzyme activity and disease phenotypes.
Point Mutation
Point mutations can be introduced into the active site of L2HGDH to dissect catalytic residues required for GO:0047545 activity. These models help distinguish between catalytic and non-catalytic functions of the enzyme. They are also useful for mimicking disease-associated mutations.
Knock-in
Knock-in of mutant IDH1 or IDH2 can be used to produce S-2HG and study its effects on epigenetics and cellular behavior. This approach allows researchers to investigate how S-2HG accumulation interacts with the dehydrogenase activity defined by GO:0047545.
Overexpression
Overexpression of L2HGDH can reduce S-2HG levels and reverse its effects, providing a gain-of-function model to study the consequences of enhanced dehydrogenase activity. This is particularly useful in immune cells where S-2HG regulates T cell fate.
How EDITGENE Supports (S)-2-hydroxyglutarate dehydrogenase activity Research
Researchers studying (S)-2-hydroxyglutarate dehydrogenase activity-related genes often need to determine whether a candidate gene is causally involved in S-2HG metabolism, immune regulation, or disease progression. EDITGENE provides a comprehensive suite of CRISPR-based services to enable such investigations with precision and reproducibility.
Contact EDITGENE today to design your custom CRISPR model for (S)-2-hydroxyglutarate dehydrogenase activity research.
Frequently Asked Questions About (S)-2-hydroxyglutarate dehydrogenase activity
What is (S)-2-hydroxyglutarate dehydrogenase activity?
It is the enzyme activity defined by GO:0047545 that catalyzes the conversion of (S)-2-hydroxyglutarate to 2-oxoglutarate using an electron acceptor.
What genes are involved in (S)-2-hydroxyglutarate dehydrogenase activity?
The primary gene is L2HGDH, but related genes include IDH1, IDH2, and LDHC, which influence S-2HG levels.
What is the role of S-2HG in cancer?
S-2HG acts as an oncometabolite that inhibits 2-oxoglutarate-dependent dioxygenases, leading to epigenetic changes and altered hypoxia signaling.
How does L2HGDH affect immune cells?
Loss of L2HGDH-mediated S-2HG catabolism alters macrophage polarization and can elicit antitumor immunity.
What diseases are associated with (S)-2-hydroxyglutarate dehydrogenase activity?
Dysregulation is linked to cancer, immune dysfunction, cardiovascular disorders, and neurodegeneration.
How can I study (S)-2-hydroxyglutarate dehydrogenase activity in the lab?
Common methods include LC-MS metabolomics, enzymatic assays, and CRISPR knockout models.
What is the reaction catalyzed by GO:0047545?
The reaction is (S)-2-hydroxyglutarate + acceptor = 2-oxoglutarate + reduced acceptor.
Is (S)-2-hydroxyglutarate dehydrogenase activity stereospecific?
Yes, the enzyme acts specifically on the S enantiomer of 2-hydroxyglutarate.
What are the synonyms for GO:0047545?
Synonyms include 2-hydroxyglutarate dehydrogenase activity, alpha-hydroxyglutarate dehydrogenase activity, and L-alpha-hydroxyglutarate dehydrogenase activity.
How does mitochondrial dysfunction affect S-2HG levels?
Mitochondrial complex I inhibition by rotenone increases (S)-2-hydroxyglutarate in neuronal cells.
Conclusion
GO:0047545, (S)-2-hydroxyglutarate dehydrogenase activity, is a critical enzymatic function that controls the catabolism of the oncometabolite S-2HG. Its dysregulation has profound implications for cancer, immunity, and cardiovascular health. By leveraging CRISPR-based models and advanced metabolomics, researchers can dissect the precise roles of this activity and identify therapeutic opportunities. EDITGENE provides the tools and services to accelerate such discoveries.
References
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- 2. Tyrakis PA et al.. 2016. S-2-hydroxyglutarate regulates CD8(+) T-lymphocyte fate.. Nature 540(7632):236-241 PMID: 27798602
- 3. Teng X et al.. 2016. Lactate Dehydrogenase C Produces S-2-Hydroxyglutarate in Mouse Testis.. ACS Chem Biol 11(9):2420-7 PMID: 27333189
- 4. Andrade J et al.. 2021. Control of endothelial quiescence by FOXO-regulated metabolites.. Nat Cell Biol 23(4):413-423 PMID: 33795871
- 5. Worth AJ et al.. 2015. Rotenone Stereospecifically Increases (S)-2-Hydroxyglutarate in SH-SY5Y Neuronal Cells.. Chem Res Toxicol 28(5):948-54 PMID: 25800467
- 6. Feng S et al.. 2024. Blockage of L2HGDH-mediated S-2HG catabolism orchestrates macrophage polarization to elicit antitumor immunity.. Cell Rep 43(6):114300 PMID: 38829739
- 7. Tarhonskaya H et al.. 2014. Non-enzymatic chemistry enables 2-hydroxyglutarate-mediated activation of 2-oxoglutarate oxygenases.. Nat Commun 5:3423 PMID: 24594748
- 8. Chen Y et al.. 2024. Characteristics of Myocardial Structure and Central Carbon Metabolism during the Early and Compensatory Stages of Cardiac Hypertrophy.. J Proteome Res 23(10):4229-4241 PMID: 39178178
