GO:0006091 generation of precursor metabolites and energy: Metabolic Energy Pathways, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0006091 describes the chemical reactions and pathways that produce precursor metabolites and liberate energy from them, encompassing energy pathways and intermediary metabolism.
• Mitochondria are central hubs for this process, contributing to ATP production, biosynthesis, redox balance, and signaling.
• Astrocyte-neuron metabolic cooperation illustrates how different cell types coordinate precursor supply and energy generation in the brain.
• NAD+ metabolism is a critical regulator of energy generation and is implicated in cardiac health, aging, and disease.
• Microbial butyrate producers influence host energy metabolism through short-chain fatty acid production, linking the gut microbiome to GO:0006091.
• Key genes such as SLC25A47 control gluconeogenesis and energy expenditure, providing targets for metabolic research.
Description
Generation of precursor metabolites and energy (GO:0006091) is a fundamental biological process that encompasses the chemical reactions and pathways producing precursor metabolites, substances from which energy is derived, and the liberation of energy from these substances. This term captures the essence of cellular metabolism, including energy pathways and intermediary metabolism, which are essential for all living organisms. Understanding this process is critical for researchers studying metabolism, aging, and diseases such as cancer and neurodegeneration.
generation of precursor metabolites and energy At A Glance
| GO ID | GO:0006091 |
|---|---|
| GO term | generation of precursor metabolites and energy |
| Ontology | biological_process |
| Synonym | energy pathways, intermediary metabolism, metabolic energy generation |
| Major function | Production of precursor metabolites and liberation of energy |
| Related processes | Glycolysis, TCA cycle, oxidative phosphorylation, gluconeogenesis |
| Key organelles | Mitochondria, cytoplasm |
| Regulatory factors | NAD+, SLC25A47, butyrate |
What Is GO:0006091?
GO:0006091, generation of precursor metabolites and energy, is defined as the chemical reactions and pathways resulting in the formation of precursor metabolites, substances from which energy is derived, and any process involved in the liberation of energy from these substances. It includes synonyms such as energy pathways, intermediary metabolism, and metabolic energy generation.
Why Is generation of precursor metabolites and energy Important in Cell Biology?
GO:0006091 is vital because it underpins all cellular activities by providing energy and building blocks. Dysregulation of these pathways is linked to metabolic disorders, cardiovascular diseases, cancer, and neurodegenerative conditions. Moreover, understanding energy metabolism in different cell types, such as astrocytes and neurons, reveals cooperative mechanisms essential for brain function.
• Provides ATP and precursors for biosynthesis.
• Mitochondrial contributions extend beyond ATP to signaling and redox control.
• NAD+ metabolism regulates energy generation and impacts cardiac aging.
• Gut microbial butyrate production influences host energy homeostasis.
• SLC25A47 controls gluconeogenesis and energy expenditure, linking to metabolic disease.
• Astrocyte-neuron metabolic cooperation is crucial for brain activity.
• Dysregulation leads to cancer, neurodegeneration, and metabolic syndromes.
• Targets for therapeutic intervention in metabolic diseases.
• Essential for understanding aging and longevity.
• Foundation for bioenergetics research and drug discovery.
What Happens During generation of precursor metabolites and energy?
Glycolysis and Precursor Formation
In simple terms: Cells break down glucose to get energy and building blocks.
Glycolysis converts glucose into pyruvate, generating ATP and NADH, and provides precursors for various biosynthetic pathways. This pathway is central to energy generation and is conserved across species.
Mitochondrial Oxidative Phosphorylation
In simple terms: Mitochondria use oxygen to make most of the cell's energy.
Mitochondria contribute to cellular metabolism through oxidative phosphorylation, producing ATP and participating in biosynthesis, redox balance, and signaling. This process is essential for energy liberation from metabolites.
Gluconeogenesis and Energy Expenditure
In simple terms: The body makes new glucose from other molecules when needed.
Gluconeogenesis synthesizes glucose from non-carbohydrate precursors, and its regulation by factors like SLC25A47 affects energy expenditure. This pathway is critical for maintaining blood glucose levels during fasting.
Metabolic Cooperation in Tissues
In simple terms: Different cells work together to manage energy.
Astrocyte-neuron metabolic cooperation shapes brain activity by exchanging precursors and energy substrates. This intercellular collaboration ensures efficient energy generation and utilization.
Key Genes Involved in GO:0006091 generation of precursor metabolites and energy
Key genes involved in generation of precursor metabolites and energy include those encoding enzymes and transporters in glycolysis, TCA cycle, oxidative phosphorylation, and gluconeogenesis.
| Gene | Major Role | Research Relevance |
|---|---|---|
| SLC25A47 | Mitochondrial transporter controlling gluconeogenesis | Target for metabolic disease and energy expenditure |
| NAMPT | NAD+ biosynthesis | Regulates energy metabolism and aging |
| PFKM | Glycolysis enzyme | Key regulator of glycolytic flux |
| PDHA1 | Pyruvate dehydrogenase complex | Links glycolysis to TCA cycle |
| CS | Citrate synthase | TCA cycle entry point |
| ATP5F1A | ATP synthase subunit | Oxidative phosphorylation |
| LDHA | Lactate dehydrogenase | Anaerobic glycolysis |
| G6PC | Glucose-6-phosphatase | Gluconeogenesis |
| PCK1 | Phosphoenolpyruvate carboxykinase | Gluconeogenesis |
| HK2 | Hexokinase 2 | Glycolysis initiation |
| IDH3A | Isocitrate dehydrogenase | TCA cycle |
| SDHA | Succinate dehydrogenase | TCA cycle and electron transport |
| UQCRC1 | Complex III subunit | Electron transport chain |
| COX4I1 | Cytochrome c oxidase subunit | Electron transport chain |
| SLC2A1 | GLUT1 glucose transporter | Glucose uptake |
| SLC2A3 | GLUT3 glucose transporter | Neuronal glucose uptake |
| BDH1 | Ketone body metabolism | Alternative energy source |
How Is generation of precursor metabolites and energy Regulated?
Generation of precursor metabolites and energy is regulated by multiple mechanisms, including NAD+ availability, which affects cardiac health and aging. SLC25A47 controls gluconeogenesis and energy expenditure, highlighting mitochondrial transporter regulation. Additionally, intercellular metabolic cooperation between astrocytes and neurons modulates brain energy metabolism.
generation of precursor metabolites and energy and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| SLC25A47 | Metabolic syndrome, diabetes | Knockout mouse, point mutation |
| NAMPT | Cardiac aging, heart failure | Overexpression, knockout |
| PFKM | Glycogen storage disease | Knock-in, knockout |
| PDHA1 | Pyruvate dehydrogenase deficiency | Point mutation, knockout |
| G6PC | Von Gierke disease | Knockout, knock-in |
Metabolic Disorders
Dysregulation of energy pathways contributes to obesity, diabetes, and metabolic syndrome. SLC25A47 variants affect gluconeogenesis and energy expenditure, linking to metabolic disease.
Cardiovascular Disease and Aging
NAD+ metabolism declines with age and is implicated in cardiac dysfunction. Targeting NAD+ pathways may improve cardiac health.
Neurodegeneration
Impaired astrocyte-neuron metabolic cooperation is associated with neurodegenerative diseases, as energy failure contributes to neuronal dysfunction.
Cancer
Cancer cells reprogram energy metabolism to support proliferation, often relying on glycolysis and mitochondrial metabolism.
From generation of precursor metabolites and energy-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does gene X regulate glycolysis? | Knockout cell line |
| Does mutation Y affect energy expenditure? | Point mutation knock-in |
| Can overexpression of gene Z enhance ATP production? | Overexpression stable line |
| How does tag affect protein localization? | Tagged knock-in |
| What is the role of gene A in gluconeogenesis? | Knockout mouse |
| Does gene B interact with metabolic enzymes? | Knock-in with affinity tag |
How to Study the generation of precursor metabolites and energy Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Seahorse assay | Oxygen consumption rate, extracellular acidification rate | Mitochondrial function and glycolysis |
| Metabolic flux analysis | Isotope labeling of metabolites | Pathway activity |
| NAD+ assay | NAD+ concentration | Redox state and energy metabolism |
| CRISPR screen | Gene essentiality under metabolic conditions | Identify regulators of energy generation |
| RNA-seq | Gene expression | Transcriptional changes in metabolism |
| Proteomics | Protein abundance | Enzyme levels in energy pathways |
| Western blot | Protein expression and phosphorylation | Signaling pathways |
| Immunofluorescence | Protein localization | Mitochondrial dynamics |
Metabolic Flux Analysis
Metabolic flux analysis using isotope tracers measures pathway activity and is essential for studying energy generation.
Seahorse Extracellular Flux Assay
This assay measures oxygen consumption and extracellular acidification rates, providing real-time readouts of oxidative phosphorylation and glycolysis.
NAD+ Quantification
NAD+ levels can be measured by enzymatic cycling assays or mass spectrometry to assess energy metabolism.
CRISPR Screening
Genome-wide CRISPR screens identify genes regulating energy pathways, such as those affecting cell growth under metabolic stress.
How CRISPR Can Be Used to Study GO:0006091 generation of precursor metabolites and energy
Knockout
CRISPR knockout of genes like SLC25A47 can reveal their roles in gluconeogenesis and energy expenditure.
Point Mutation
Introducing point mutations in metabolic enzymes allows study of specific residues in catalysis and regulation.
Knock-in
Knock-in of tagged metabolic proteins enables tracking of localization and interactions in live cells.
Overexpression
Overexpression of rate-limiting enzymes such as PFKM can enhance glycolytic flux and ATP production.
How EDITGENE Supports generation of precursor metabolites and energy Research
Researchers studying generation of precursor metabolites and energy-related genes often need to determine whether a candidate gene is causally involved in metabolic regulation. EDITGENE provides comprehensive CRISPR services to accelerate this discovery.
Contact EDITGENE today to design your custom CRISPR model for generation of precursor metabolites and energy research.
Frequently Asked Questions About generation of precursor metabolites and energy
What is GO:0006091?
GO:0006091 is the Gene Ontology term for generation of precursor metabolites and energy, describing chemical reactions and pathways that produce precursor metabolites and liberate energy.
What genes are involved in generation of precursor metabolites and energy?
Key genes include SLC25A47, NAMPT, PFKM, PDHA1, and many others involved in glycolysis, TCA cycle, and oxidative phosphorylation.
Why is generation of precursor metabolites and energy important?
It provides ATP and building blocks for all cellular processes, and its dysregulation leads to metabolic, cardiovascular, and neurodegenerative diseases.
How is generation of precursor metabolites and energy regulated?
It is regulated by NAD+ levels, mitochondrial transporters like SLC25A47, and intercellular cooperation.
What diseases are associated with defects in energy generation?
Metabolic disorders, cardiac aging, neurodegeneration, and cancer are linked to defects in these pathways.
What methods study generation of precursor metabolites and energy?
Seahorse assay, metabolic flux analysis, NAD+ quantification, and CRISPR screens are commonly used.
How can CRISPR help study energy metabolism?
CRISPR knockout, knock-in, point mutation, and overexpression models enable functional dissection of metabolic genes.
What is the role of mitochondria in energy generation?
Mitochondria are central hubs for oxidative phosphorylation, biosynthesis, and signaling.
How does NAD+ affect energy metabolism?
NAD+ is a critical cofactor in redox reactions and its decline is linked to aging and cardiac disease.
What is astrocyte-neuron metabolic cooperation?
It is the exchange of energy substrates and precursors between astrocytes and neurons to support brain activity.
Conclusion
GO:0006091 generation of precursor metabolites and energy is a cornerstone of cellular metabolism, integrating pathways that produce energy and biosynthetic precursors. Understanding its regulation and dysfunction is essential for tackling metabolic, cardiovascular, and neurodegenerative diseases. EDITGENE offers advanced CRISPR tools to study these processes with precision.
References
- 1. Bonvento G et al.. 2021. Astrocyte-neuron metabolic cooperation shapes brain activity.. Cell Metab 33(8):1546-1564 PMID: 34348099
- 2. Spinelli JB et al.. 2018. The multifaceted contributions of mitochondria to cellular metabolism.. Nat Cell Biol 20(7):745-754 PMID: 29950572
- 3. Abdellatif M et al.. 2021. NAD(+) Metabolism in Cardiac Health, Aging, and Disease.. Circulation 144(22):1795-1817 PMID: 34843394
- 4. Singh V et al.. 2022. Butyrate producers, "The Sentinel of Gut": Their intestinal significance with and beyond butyrate, and prospective use as microbial therapeutics.. Front Microbiol 13:1103836 PMID: 36713166
- 5. Yook JS et al.. 2023. The SLC25A47 locus controls gluconeogenesis and energy expenditure.. Proc Natl Acad Sci U S A 120(9):e2216810120 PMID: 36812201
