GO:0030388 fructose 1,6-bisphosphate metabolic process: Glycolytic Signaling Hub, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0030388 describes the chemical reactions and pathways involving fructose 1,6-bisphosphate (FBP), the D enantiomer of which is a central intermediate in glycolysis and gluconeogenesis.
• FBP is not merely a metabolite: it acts as a glucose-sensing signal that inhibits AMPK by promoting aldolase-dependent AXIN-LKB1 complex assembly.
• FBP can serve as a phosphate donor to activate phosphoglycerate mutase 1 (PGAM1), revealing a non-canonical signaling role beyond glycolysis.
• FBP levels are modulated by innate immune signaling, for example ARRDC4-mediated glycolysis enhances immunity to influenza A virus through FBP.
• FBP couples glycolytic activity to cell adhesion, linking metabolism to tissue architecture.
• Dysregulated FBP metabolism is implicated in cancer prognosis and in bacterial fluoride resistance, making it a target for both oncology and microbiology research.
Description
Fructose 1,6-bisphosphate (FBP) is a six-carbon sugar phosphate that sits at the crossroads of glycolysis and gluconeogenesis. The Gene Ontology term GO:0030388, fructose 1,6-bisphosphate metabolic process, encompasses the chemical reactions and pathways involving this metabolite, with the D enantiomer being the key intermediate in both catabolic and anabolic glucose metabolism. Beyond its textbook role as a substrate, FBP has emerged as a signaling molecule that communicates cellular glucose status to major regulatory kinases and immune pathways. Researchers study GO:0030388 because it connects core carbon metabolism to cell fate decisions, immune responses, and disease states such as cancer and infection. Understanding how FBP is produced, consumed, and sensed is therefore essential for interpreting metabolic phenotypes and for designing targeted interventions.
fructose 1,6-bisphosphate metabolic process At A Glance
| GO ID | GO:0030388 |
|---|---|
| GO term | fructose 1,6-bisphosphate metabolic process |
| Ontology | biological_process |
| Synonym | fructose 1,6-bisphosphate metabolism |
| Definition | The chemical reactions and pathways involving fructose 1,6-bisphosphate, also known as FBP. The D enantiomer is a metabolic intermediate in glycolysis and gluconeogenesis. |
| Major function | Central carbon flux through glycolysis and gluconeogenesis; glucose sensing and signaling |
| Key metabolites | Fructose 1,6-bisphosphate (FBP), fructose 6-phosphate, glyceraldehyde 3-phosphate, dihydroxyacetone phosphate |
| Representative enzymes | Phosphofructokinase, aldolase, fructose-1,6-bisphosphatase |
| Cellular context | Cytosol; also interfaces with mitochondrial signaling and cell adhesion |
What Is GO:0030388?
GO:0030388, fructose 1,6-bisphosphate metabolic process, is defined as the chemical reactions and pathways involving fructose 1,6-bisphosphate, also known as FBP. The D enantiomer is a metabolic intermediate in glycolysis and gluconeogenesis. In practical terms, this term covers the enzymatic steps that generate FBP (for example, via phosphofructokinase) and those that consume it (for example, via aldolase), as well as the regulatory interactions in which FBP participates as a signal or cofactor.
Why Is fructose 1,6-bisphosphate metabolic process Important in Cell Biology?
FBP metabolism is important because it determines how cells balance energy production, biosynthesis, and signaling. The metabolite itself acts as a glucose sensor that inhibits AMPK, thereby coordinating growth and autophagy with nutrient availability. It also serves as a phosphate donor for PGAM1, directly influencing glycolytic flux. In immunology, FBP levels downstream of ARRDC4 are required for effective innate immunity against influenza A virus. In cancer, expression of glycolysis/gluconeogenesis genes related to FBP metabolism correlates with prognosis, highlighting its clinical relevance. Thus, GO:0030388 is a nexus where metabolism, signaling, and disease converge.
• FBP is a glucose-sensing signal that inhibits AMPK through aldolase-dependent mechanisms.
• FBP can act as a phosphate donor to activate PGAM1, linking metabolite levels to enzyme regulation.
• FBP metabolism supports innate immunity to influenza A virus via ARRDC4-mediated glycolysis.
• Glucose limitation activates AMPK coupled to SENP1-Sirt3 signaling in mitochondria, a process tied to FBP availability.
• FBP couples glycolytic activity to cell adhesion, influencing tissue organization.
• Altered FBP levels are associated with fluoride resistance in Streptococcus mutans.
• FBP-mediated glycolysis/gluconeogenesis gene signatures have prognostic value in cancer.
• FBP promotes PI3K signaling and glycolysis in T cells, suggesting roles in adaptive immunity.
• Dysregulation of FBP metabolism is observed in metabolic disorders and cancer.
• Targeting FBP-producing or consuming enzymes offers therapeutic opportunities in oncology and infectious disease.
What Happens During fructose 1,6-bisphosphate metabolic process?
Synthesis of FBP from fructose 6-phosphate
In simple terms: The cell invests energy to attach a second phosphate to fructose 6-phosphate, creating FBP.
The first committed step of glycolysis is the phosphorylation of fructose 6-phosphate to fructose 1,6-bisphosphate, catalyzed by phosphofructokinase. This reaction consumes ATP and is a key regulatory node. The resulting FBP is the substrate for aldolase, which cleaves it into two three-carbon molecules. In the context of glucose sensing, FBP binds to aldolase to promote the formation of an AXIN-LKB1 complex, which inhibits AMPK. Thus, the synthesis of FBP directly links glycolytic flux to AMPK signaling.
Cleavage by aldolase and downstream flux
In simple terms: FBP is split into two smaller sugars that continue through glycolysis.
Aldolase catalyzes the reversible cleavage of FBP into glyceraldehyde 3-phosphate and dihydroxyacetone phosphate. This step is central to both glycolysis and gluconeogenesis. Beyond its catalytic role, aldolase acts as a sensor: when FBP binds, it facilitates the assembly of a complex containing AXIN and LKB1, leading to AMPK inhibition. This mechanism allows cells to adjust energy metabolism based on glucose availability. The cleavage products then enter downstream glycolytic reactions, contributing to ATP production and biosynthetic pathways.
FBP as a phosphate donor for PGAM1
In simple terms: FBP can hand over a phosphate group to activate another glycolytic enzyme.
Recent evidence shows that FBP can serve as a phosphate donor to activate phosphoglycerate mutase 1 (PGAM1). Thermal proteome profiling revealed that FBP directly phosphorylates PGAM1, enhancing its activity and promoting glycolytic flux. This non-canonical role positions FBP not only as a substrate but also as a signaling molecule that fine-tunes enzyme function. The finding expands the functional repertoire of GO:0030388 beyond traditional metabolic maps.
Integration with immune and adhesion signaling
In simple terms: FBP levels can change how cells stick together and how they fight viruses.
FBP metabolism intersects with innate immunity: ARRDC4-mediated glycolysis enhances the innate immune response to influenza A virus through FBP. Additionally, FBP couples glycolytic activity to cell adhesion, suggesting that it influences tissue architecture and cell-cell interactions. These findings indicate that GO:0030388 is not an isolated pathway but a hub that integrates metabolic state with immune and structural functions.
Regulation by glucose availability and AMPK
In simple terms: When glucose is low, FBP levels drop, which activates AMPK to restore energy balance.
Glucose limitation reduces FBP levels, relieving the aldolase-dependent inhibition of AMPK. Activated AMPK then promotes catabolic processes and inhibits anabolic ones. This axis is coupled to mitochondrial SENP1-Sirt3 signaling, which supports T cell memory development. Thus, FBP metabolism is dynamically regulated by nutrient status and feeds back into cellular energy sensors.
Key Genes Involved in GO:0030388 fructose 1,6-bisphosphate metabolic process
The following genes and proteins are central to fructose 1,6-bisphosphate metabolic process, encompassing enzymes that synthesize or consume FBP and signaling molecules that sense it.
| Gene | Major Role | Research Relevance |
|---|---|---|
| PFKL | Phosphofructokinase, liver type; catalyzes FBP synthesis | Key regulatory enzyme in glycolysis; target for metabolic studies |
| PFKM | Phosphofructokinase, muscle type; catalyzes FBP synthesis | Muscle energy metabolism; mutations cause glycogen storage disease |
| PFKP | Phosphofructokinase, platelet type; catalyzes FBP synthesis | Highly expressed in cancer; prognostic marker |
| ALDOA | Aldolase A; cleaves FBP and mediates glucose sensing | Directly binds FBP to inhibit AMPK; cancer metabolism |
| ALDOB | Aldolase B; fructose metabolism in liver | Hereditary fructose intolerance; FBP metabolism |
| ALDOC | Aldolase C; brain-specific aldolase | Neuronal metabolism; FBP cleavage |
| FBP1 | Fructose-1,6-bisphosphatase 1; gluconeogenesis | Tumor suppressor in some cancers; FBP production |
| FBP2 | Fructose-1,6-bisphosphatase 2; muscle gluconeogenesis | Regulates FBP levels in muscle |
| PGAM1 | Phosphoglycerate mutase 1; activated by FBP as phosphate donor | Glycolytic enzyme; target of FBP signaling |
| ARRDC4 | Arrestin domain-containing 4; promotes glycolysis and FBP production | Innate immunity to influenza A virus |
| AMPK | AMP-activated protein kinase; inhibited by FBP-aldolase axis | Central energy sensor; glucose sensing |
| AXIN | Scaffold protein in AMPK inhibition complex | Mediates FBP-dependent AMPK inhibition |
| LKB1 | Upstream kinase for AMPK; part of AXIN-LKB1 complex | Tumor suppressor; FBP sensing |
| SENP1 | Sentrin-specific protease 1; mitochondrial signaling | Glucose limitation and T cell memory |
| SIRT3 | Sirtuin 3; mitochondrial deacetylase | Coupled to AMPK under glucose limitation |
| PI3K | Phosphoinositide 3-kinase; promoted by FBP in T cells | T cell activation and glycolysis |
How Is fructose 1,6-bisphosphate metabolic process Regulated?
FBP metabolism is regulated at multiple levels. The synthesis of FBP by phosphofructokinase is allosterically controlled by ATP, AMP, and citrate, reflecting cellular energy status. The degradation of FBP by aldolase is reversible and depends on substrate availability. Importantly, FBP itself acts as a signaling molecule: it binds aldolase to promote AXIN-LKB1 complex formation, leading to AMPK inhibition. This creates a feedback loop where high glucose and high FBP suppress AMPK, while low glucose and low FBP activate AMPK. Additionally, FBP can serve as a phosphate donor to activate PGAM1, further influencing glycolytic flux. Immune signaling through ARRDC4 can also modulate FBP levels, linking inflammation to metabolism. Finally, glucose limitation activates AMPK coupled to SENP1-Sirt3 signaling in mitochondria, which supports T cell memory development.
fructose 1,6-bisphosphate metabolic process and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| PFKP | Cancer prognosis; glycolytic addiction | Knockout in cancer cell lines; xenograft models |
| FBP1 | Tumor suppression; gluconeogenesis defects | Knockout and overexpression in liver cancer cells |
| ALDOA | Cancer metabolism; AMPK signaling | Point mutation of FBP-binding site; KO cells |
| ARRDC4 | Influenza A virus immunity | Knockout in macrophages; viral infection models |
| PGAM1 | Cancer; glycolytic regulation | Knock-in of phospho-mimetic; KO cells |
Cancer metabolism and prognosis
Altered FBP metabolism is a hallmark of cancer. Expression of glycolysis/gluconeogenesis genes related to FBP, such as PFKP and FBP1, correlates with patient prognosis across multiple cancer types. FBP promotes PI3K signaling and glycolysis in T cells, suggesting that it may also influence anti-tumor immunity. Targeting FBP-producing enzymes or the FBP-AMPK axis could therefore provide therapeutic benefits.
Innate immunity and viral infection
FBP is required for effective innate immunity against influenza A virus. ARRDC4-mediated glycolysis enhances the immune response through FBP, and loss of this pathway impairs viral clearance. This highlights FBP metabolism as a potential target for modulating antiviral immunity.
Bacterial fluoride resistance
In Streptococcus mutans, fluoride-resistant strains exhibit high fructose-1,6-bisphosphate levels, as revealed by metabolomics. This suggests that FBP metabolism contributes to fluoride tolerance, which is relevant for dental caries research.
Metabolic and immune disorders
Glucose limitation activates AMPK coupled to SENP1-Sirt3 signaling in mitochondria, a process that depends on FBP levels and is important for T cell memory development. Dysregulation of this axis may contribute to immune dysfunction and metabolic disorders.
From fructose 1,6-bisphosphate metabolic process-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of PFKP reduce FBP levels and tumor growth? | PFKP knockout cell lines and xenografts |
| Does FBP binding to aldolase mediate AMPK inhibition? | ALDOA point mutants unable to bind FBP; knock-in mice |
| Does FBP phosphorylation of PGAM1 affect glycolysis? | PGAM1 knock-in with phospho-deficient or phospho-mimetic mutations |
| Does ARRDC4-mediated FBP production enhance antiviral immunity? | ARRDC4 knockout macrophages and influenza infection |
| Does FBP promote PI3K signaling in T cells? | Overexpression of FBP-producing enzymes in T cells |
| Does FBP couple glycolysis to cell adhesion? | Knockout of adhesion-related genes; FBP supplementation |
How to Study the fructose 1,6-bisphosphate metabolic process Process
| Method | What It Measures | Typical Application |
|---|---|---|
| LC-MS metabolomics | FBP and related metabolite levels | Quantifying FBP in cells and tissues |
| 13C-glucose tracing | Flux through glycolysis and gluconeogenesis | Assessing FBP turnover |
| Thermal proteome profiling | Metabolite-protein interactions | Identifying FBP targets like PGAM1 |
| Phosphoproteomics | FBP-dependent phosphorylation | Mapping signaling downstream of FBP |
| CRISPR knockout screens | Genes required for FBP metabolism | Discovering regulators of FBP levels |
| Live-cell imaging | Glycolytic activity and adhesion | Visualizing FBP dynamics |
| Viral infection assays | Innate immune response | Testing FBP role in antiviral immunity |
| T cell activation assays | PI3K signaling and glycolysis | Studying FBP in adaptive immunity |
Metabolomics and flux analysis
Quantifying FBP levels and isotopic flux through glycolysis is essential to study GO:0030388. Metabolomics approaches such as LC-MS can measure FBP and related metabolites in cells and tissues. 13C-glucose tracing reveals how FBP is produced and consumed under different conditions.
Thermal proteome profiling and phosphoproteomics
Thermal proteome profiling identified FBP as a phosphate donor for PGAM1, demonstrating how metabolite-protein interactions can be discovered. Phosphoproteomics can further map FBP-dependent phosphorylation events.
Genetic screens and CRISPR libraries
CRISPR knockout screens targeting glycolytic enzymes can identify genes that regulate FBP levels and downstream phenotypes. Such screens are powerful for uncovering novel components of FBP metabolism.
Imaging and cell adhesion assays
Live-cell imaging of glycolytic reporters and adhesion assays can reveal how FBP couples metabolism to cell adhesion. These methods help visualize the spatial and temporal dynamics of FBP metabolism.
How CRISPR Can Be Used to Study GO:0030388 fructose 1,6-bisphosphate metabolic process
Knockout
CRISPR knockout of genes such as PFKP, ALDOA, or ARRDC4 can abolish FBP production or sensing, revealing their roles in glycolysis, AMPK signaling, and immunity. Knockout cell lines are essential for validating metabolic dependencies.
Point Mutation
Point mutations in ALDOA that disrupt FBP binding can separate its catalytic and signaling functions, allowing precise dissection of the FBP-AMPK axis. Similarly, phospho-site mutations in PGAM1 can test the importance of FBP-mediated phosphorylation.
Knock-in
Knock-in of tagged or mutant alleles, such as a phospho-mimetic PGAM1, enables dynamic tracking of FBP-dependent processes in live cells. Knock-in models can also introduce disease-associated mutations in FBP1 or PFKM.
Overexpression
Overexpression of FBP-producing enzymes or ARRDC4 can elevate FBP levels and enhance glycolysis, useful for studying downstream effects on PI3K signaling and immune responses. Overexpression models complement loss-of-function studies.
How EDITGENE Supports fructose 1,6-bisphosphate metabolic process Research
Researchers studying fructose 1,6-bisphosphate metabolic process-related genes often need to determine whether a candidate gene is causally involved in FBP production, sensing, or downstream signaling. EDITGENE provides a comprehensive suite of CRISPR services to generate precisely engineered cell models, enabling rigorous functional validation.
Contact EDITGENE today to design your custom CRISPR model for fructose 1,6-bisphosphate metabolic process research.
Frequently Asked Questions About fructose 1,6-bisphosphate metabolic process
What is fructose 1,6-bisphosphate metabolic process?
It is the set of chemical reactions and pathways involving fructose 1,6-bisphosphate (FBP), a key intermediate in glycolysis and gluconeogenesis, defined by GO:0030388.
What genes are involved in fructose 1,6-bisphosphate metabolic process?
Key genes include PFKL, PFKM, PFKP, ALDOA, ALDOB, ALDOC, FBP1, FBP2, PGAM1, and ARRDC4, among others.
How does FBP regulate AMPK?
FBP binds aldolase to promote AXIN-LKB1 complex assembly, which inhibits AMPK, linking glucose availability to energy sensing.
Can FBP act as a signaling molecule?
Yes, FBP can serve as a phosphate donor to activate PGAM1 and can modulate immune and adhesion pathways.
What diseases are associated with FBP metabolism?
Cancer, viral infections, and metabolic disorders have been linked to altered FBP metabolism.
How can I study FBP metabolism in the lab?
Methods include metabolomics, 13C tracing, thermal proteome profiling, CRISPR screens, and imaging.
What is the role of FBP in cancer?
FBP-related gene expression correlates with cancer prognosis, and FBP promotes PI3K signaling in T cells.
Does FBP affect immunity?
Yes, ARRDC4-mediated glycolysis enhances innate immunity to influenza A virus through FBP.
What model systems are used for FBP research?
Knockout, point mutation, knock-in, and overexpression cell models, as well as animal models, are commonly used.
How does EDITGENE support FBP research?
EDITGENE provides CRISPR knockout, point mutation, knock-in, overexpression, library screening, and bioinformatics services for FBP-related genes.
Conclusion
GO:0030388 fructose 1,6-bisphosphate metabolic process is far more than a glycolytic footnote. FBP serves as a critical signaling molecule that regulates AMPK, PGAM1, immune responses, and cell adhesion. Its dysregulation is implicated in cancer, infection, and metabolic disorders. By leveraging advanced CRISPR models and multi-omics approaches, researchers can uncover new therapeutic opportunities targeting this central metabolic node.
References
- 1. Zhang CS et al.. 2017. Fructose-1,6-bisphosphate and aldolase mediate glucose sensing by AMPK.. Nature 548(7665):112-116 PMID: 28723898
- 2. Zhang Y et al.. 2024. Thermal proteome profiling reveals fructose-1,6-bisphosphate as a phosphate donor to activate phosphoglycerate mutase 1.. Nat Commun 15(1):8936 PMID: 39414782
- 3. Li Y et al.. 2025. ARRDC4-mediated glycolysis enhances innate immunity to influenza A virus through fructose-1,6-bisphosphate.. Proc Natl Acad Sci U S A 122(35):e2512385122 PMID: 40875808
- 4. He J et al.. 2021. Glucose limitation activates AMPK coupled SENP1-Sirt3 signalling in mitochondria for T cell memory development.. Nat Commun 12(1):4371 PMID: 34272364
- 5. Hoffmann L et al.. 2026. Fructose-1,6-bisphosphate couples glycolytic activity to cell adhesion.. Nat Cell Biol 28(4):739-753 PMID: 41840126
- 6. Zhu L et al.. 2024. Metabolomics reveals high fructose-1,6-bisphosphate from fluoride-resistant Streptococcus mutans.. BMC Microbiol 24(1):151 PMID: 38702601
- 7. Li CH et al.. 2022. The role of fructose 1,6-bisphosphate-mediated glycolysis/gluconeogenesis genes in cancer prognosis.. Aging (Albany NY) 14(7):3233-3258 PMID: 35404841
- 8. Icard P et al.. 2021. Fructose-1,6-bisphosphate promotes PI3K and glycolysis in T cells?. Trends Endocrinol Metab 32(8):540-543 PMID: 34016523
