GO:0005975 carbohydrate metabolic process: Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0005975 carbohydrate metabolic process describes all chemical reactions and pathways involving carbohydrates, organic compounds with the general formula Cx(H2O)y.
• Carbohydrate metabolism encompasses digestion, absorption, glycolysis, gluconeogenesis, glycogen synthesis and breakdown, and the pentose phosphate pathway.
• Dysregulation of carbohydrate metabolic process is linked to liver diseases, diabetes, cancer, and neurological disorders.
• Key genes include G6PC, GCK, PFKM, PKLR, LDHA, and GYS1, which are frequently studied using CRISPR knockout, knock-in, and overexpression models.
• Neuronal and hormonal signals control peripheral nutrient partitioning, directly influencing carbohydrate metabolic process.
• Studying this process requires integrated methods such as RNA-seq, proteomics, metabolomics, and CRISPR library screening.
Description
Carbohydrate metabolic process (GO:0005975) is a fundamental biological process that encompasses the chemical reactions and pathways involving carbohydrates, which are organic compounds with the general formula Cx(H2O)y. This process is essential for energy production, storage, and the synthesis of structural components in all living organisms. Researchers study carbohydrate metabolic process to understand how cells convert nutrients into energy and how disruptions in these pathways contribute to diseases such as diabetes, liver disease, and cancer. The process includes carbohydrate digestion and absorption, glycolysis, gluconeogenesis, glycogen metabolism, and the pentose phosphate pathway. Beyond energy metabolism, carbohydrate metabolic process intersects with neuronal control of nutrient partitioning and lactate metabolism, highlighting its systemic importance. Given its broad impact, GO:0005975 is a central focus in metabolic research, with CRISPR-based models enabling precise functional dissection of involved genes.
carbohydrate metabolic process At A Glance
| GO ID | GO:0005975 |
|---|---|
| GO term | carbohydrate metabolic process |
| Ontology | biological_process |
| Synonym | carbohydrate metabolism |
| Major function | Chemical reactions and pathways involving carbohydrates, including their synthesis, breakdown, and interconversion |
| Key pathways | Glycolysis, gluconeogenesis, glycogen metabolism, pentose phosphate pathway, carbohydrate digestion |
| Associated diseases | Liver diseases, diabetes, cancer, neurological disorders |
| Research methods | CRISPR knockout, knock-in, overexpression, RNA-seq, proteomics, metabolomics |
What Is GO:0005975?
GO:0005975 carbohydrate metabolic process is defined as the chemical reactions and pathways involving carbohydrates, any of a group of organic compounds based on the general formula Cx(H2O)y. This includes the breakdown of carbohydrates for energy, the synthesis of carbohydrates from non-carbohydrate precursors, and the interconversion of various sugar molecules. The process is carried out by a wide array of enzymes and is regulated at multiple levels to meet cellular demands.
Why Is carbohydrate metabolic process Important in Cell Biology?
Carbohydrate metabolic process is vital because it provides energy and metabolic intermediates for all cells, and its dysregulation is a hallmark of many human diseases, including liver diseases, diabetes, and cancer. Understanding this process at the molecular level can reveal therapeutic targets and biomarkers for metabolic disorders.
• Provides energy through glycolysis and oxidative phosphorylation.
• Maintains blood glucose homeostasis via glycogen synthesis and breakdown.
• Supplies precursors for nucleotide, amino acid, and lipid synthesis.
• Dysregulated in liver diseases such as non-alcoholic fatty liver disease and hepatocellular carcinoma.
• Linked to lactate metabolism and cancer progression.
• Influenced by neuronal control of nutrient partitioning.
• Targeted by chloroviruses for glycosylation processes.
• Regulated during plant quiescence and germination.
• Key for understanding metabolic reprogramming in immune cells and cancer.
• Enables development of CRISPR-based models for metabolic gene function.
What Happens During carbohydrate metabolic process?
Carbohydrate Digestion and Absorption
In simple terms: Carbohydrates are broken down into simple sugars that can be absorbed by the body.
Dietary carbohydrates are hydrolyzed by enzymes such as amylases and disaccharidases into monosaccharides like glucose, fructose, and galactose, which are then absorbed by intestinal cells. This step is critical for providing energy and is influenced by the type of carbohydrate consumed.
Glycolysis and Gluconeogenesis
In simple terms: Glycolysis breaks down glucose to make energy, while gluconeogenesis makes new glucose from other molecules.
Glycolysis converts glucose into pyruvate, generating ATP and NADH, while gluconeogenesis synthesizes glucose from lactate, glycerol, and amino acids, primarily in the liver and kidney. These pathways are reciprocally regulated to maintain blood glucose levels.
Glycogen Metabolism
In simple terms: Glycogen is a stored form of glucose that can be quickly broken down when energy is needed.
Glycogen synthesis (glycogenesis) and breakdown (glycogenolysis) are regulated by hormones such as insulin and glucagon, and enzymes like glycogen synthase and glycogen phosphorylase. This process is essential for maintaining glucose homeostasis, especially between meals.
Pentose Phosphate Pathway
In simple terms: This pathway produces building blocks for nucleotides and maintains antioxidant balance.
The pentose phosphate pathway generates NADPH and ribose-5-phosphate, which are used for reductive biosynthesis and nucleotide synthesis, respectively. It is particularly active in rapidly dividing cells and is linked to cancer metabolism.
Lactate Metabolism
In simple terms: Lactate is produced from glucose breakdown and can be used as fuel or signaling molecule.
Lactate, once considered a waste product, is now recognized as a key metabolite that fuels oxidative metabolism and serves as a signaling molecule in health and disease. Its production and utilization are tightly linked to carbohydrate metabolic process.
Key Genes Involved in GO:0005975 carbohydrate metabolic process
The following genes encode enzymes and regulators that are central to carbohydrate metabolic process and are frequently studied in metabolic research.
| Gene | Major Role | Research Relevance |
|---|---|---|
| G6PC | Catalyzes the final step of gluconeogenesis and glycogenolysis | Mutations cause glycogen storage disease type I; target for diabetes research |
| GCK | Phosphorylates glucose in the first step of glycolysis | Key regulator of glucose sensing in pancreatic beta cells and liver |
| PFKM | Phosphofructokinase, rate-limiting enzyme of glycolysis | Mutations cause Tarui disease; studied in cancer metabolism |
| PKLR | Pyruvate kinase, catalyzes final step of glycolysis | Mutations cause pyruvate kinase deficiency; target in cancer |
| LDHA | Converts pyruvate to lactate | Important for anaerobic glycolysis and cancer Warburg effect |
| GYS1 | Glycogen synthase, catalyzes glycogen synthesis | Regulated by insulin; studied in diabetes and glycogen storage diseases |
| PYGL | Glycogen phosphorylase, catalyzes glycogen breakdown | Mutations cause glycogen storage disease type VI |
| G6PD | Glucose-6-phosphate dehydrogenase, rate-limiting enzyme of pentose phosphate pathway | Deficiency causes hemolytic anemia; linked to cancer |
| FBP1 | Fructose-1,6-bisphosphatase, gluconeogenic enzyme | Mutations cause fructose-1,6-bisphosphatase deficiency |
| ALDOB | Aldolase B, involved in fructose metabolism | Mutations cause hereditary fructose intolerance |
| SLC2A2 | Glucose transporter 2 (GLUT2), facilitates glucose transport | Mutations cause Fanconi-Bickel syndrome |
| SLC5A1 | Sodium-glucose cotransporter 1 (SGLT1), intestinal glucose absorption | Mutations cause glucose-galactose malabsorption |
| HK1 | Hexokinase 1, phosphorylates glucose in glycolysis | Studied in cancer and neuroprotection |
| PC | Pyruvate carboxylase, converts pyruvate to oxaloacetate for gluconeogenesis | Deficiency causes lactic acidosis and neurological symptoms |
| ACACA | Acetyl-CoA carboxylase, links carbohydrate and lipid metabolism | Target for obesity and diabetes |
| PPP1R3A | Regulatory subunit of protein phosphatase 1, regulates glycogen metabolism | Studied in insulin resistance |
How Is carbohydrate metabolic process Regulated?
Carbohydrate metabolic process is regulated by hormones such as insulin and glucagon, which control enzyme activity and gene expression. Neuronal signals also influence peripheral nutrient partitioning, affecting glucose uptake and utilization. Additionally, metabolic regulation of quiescence in plants highlights conserved mechanisms.
carbohydrate metabolic process and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| G6PC | Glycogen storage disease type I | Knockout mouse, patient-derived iPSCs |
| LDHA | Cancer Warburg effect | Knockout cancer cell lines, overexpression models |
| GCK | Maturity-onset diabetes of the young (MODY2) | Point mutation knock-in mice |
| G6PD | Hemolytic anemia, cancer | Knockout cell lines, overexpression |
| SLC2A2 | Fanconi-Bickel syndrome | Knockout zebrafish, iPSC-derived hepatocytes |
Liver Diseases
Dysregulation of carbohydrate metabolic process is a hallmark of liver diseases, including non-alcoholic fatty liver disease and hepatocellular carcinoma, where altered glycolysis and gluconeogenesis contribute to disease progression.
Cancer Metabolism
Cancer cells often reprogram carbohydrate metabolism, favoring aerobic glycolysis (Warburg effect) and lactate production, which supports rapid growth and survival.
Diabetes and Metabolic Disorders
Impaired carbohydrate metabolic process underlies insulin resistance and type 2 diabetes, with defects in glycogen synthesis, glucose uptake, and gluconeogenesis.
Neurological Disorders
Neuronal control of nutrient partitioning and lactate metabolism are critical for brain function, and their disruption is linked to neurodegeneration and metabolic encephalopathies.
From carbohydrate metabolic process-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of G6PC affect gluconeogenesis? | CRISPR knockout in hepatocytes |
| Does a specific GCK mutation cause MODY2? | Point mutation knock-in in mice |
| Can overexpression of LDHA promote cancer growth? | Overexpression in cancer cell lines |
| How does tagged GYS1 localize in cells? | Tagged knock-in with fluorescent protein |
| What genes are essential for carbohydrate metabolism? | CRISPR library screening in metabolic cell lines |
| Does neuronal control affect glucose uptake? | Conditional knockout in neurons |
How to Study the carbohydrate metabolic process Process
| Method | What It Measures | Typical Application |
|---|---|---|
| RNA-seq | Gene expression changes | Identify differentially expressed metabolic genes |
| CRISPR library screening | Essential genes for metabolism | Discover novel regulators of carbohydrate metabolism |
| Proteomics | Protein abundance and modifications | Quantify glycolytic enzyme levels |
| Metabolomics | Metabolite concentrations | Measure glycolytic intermediates and lactate |
| Isotope tracing | Metabolic flux | Track glucose carbon fate |
| Fluorescent glucose uptake assay | Glucose transport activity | Assess insulin sensitivity |
| Western blot | Protein expression and phosphorylation | Validate knockout or overexpression |
Genomic and Transcriptomic Approaches
RNA-seq and CRISPR screening can identify genes and pathways involved in carbohydrate metabolic process, revealing transcriptional changes under different metabolic conditions.
Proteomic and Metabolomic Profiling
Mass spectrometry-based proteomics and metabolomics quantify enzymes and metabolites, providing a snapshot of carbohydrate metabolic flux.
Imaging and Flux Analysis
Fluorescent glucose analogs and isotope tracing enable real-time visualization and quantification of carbohydrate metabolism in live cells.
Genetic Perturbation with CRISPR
CRISPR knockout, knock-in, and overexpression models allow precise manipulation of carbohydrate metabolic genes to study their function in health and disease.
How CRISPR Can Be Used to Study GO:0005975 carbohydrate metabolic process
Knockout
CRISPR knockout of carbohydrate metabolic genes such as G6PC or LDHA enables researchers to study loss-of-function phenotypes, including altered glucose production or lactate secretion.
Point Mutation
Introducing disease-associated point mutations (e.g., in GCK) via CRISPR knock-in recapitulates human metabolic disorders in model systems, allowing precise functional analysis.
Knock-in
Knock-in of tagged versions of enzymes like GYS1 or reporter genes allows real-time tracking of protein localization and dynamics in carbohydrate metabolic process.
Overexpression
CRISPR activation or cDNA overexpression of genes such as LDHA or HK1 can model metabolic reprogramming in cancer and identify therapeutic vulnerabilities.
How EDITGENE Supports carbohydrate metabolic process Research
Researchers studying carbohydrate metabolic process-related genes often need to determine whether a candidate gene is causally involved in metabolic phenotypes. EDITGENE provides comprehensive CRISPR-based services to accelerate this discovery.
Contact EDITGENE today to design your custom CRISPR model for carbohydrate metabolic process research.
Frequently Asked Questions About carbohydrate metabolic process
What is carbohydrate metabolic process GO:0005975?
GO:0005975 is a Gene Ontology term for the chemical reactions and pathways involving carbohydrates, organic compounds with the formula Cx(H2O)y.
What genes are involved in carbohydrate metabolic process?
Key genes include G6PC, GCK, PFKM, PKLR, LDHA, GYS1, and G6PD, among many others.
How is carbohydrate metabolic process regulated?
It is regulated by hormones like insulin and glucagon, neuronal signals, and cellular energy status.
What diseases are linked to carbohydrate metabolic process?
Diseases include liver diseases, diabetes, cancer, and neurological disorders.
What methods are used to study carbohydrate metabolic process?
Common methods include RNA-seq, proteomics, metabolomics, and CRISPR screening.
How can CRISPR be used to study carbohydrate metabolic process?
CRISPR enables knockout, knock-in, point mutation, and overexpression of metabolic genes to dissect their functions.
What is the role of lactate in carbohydrate metabolic process?
Lactate is produced from pyruvate during glycolysis and serves as a fuel and signaling molecule.
How does neuronal control affect carbohydrate metabolic process?
Neuronal signals regulate peripheral nutrient partitioning, influencing glucose uptake and utilization.
What is the Warburg effect in carbohydrate metabolic process?
The Warburg effect is the preference of cancer cells for aerobic glycolysis and lactate production, even in the presence of oxygen.
Why is carbohydrate metabolic process important for energy?
It generates ATP and metabolic intermediates essential for cellular function.
Conclusion
Carbohydrate metabolic process (GO:0005975) is a cornerstone of cellular energy metabolism and is implicated in a wide range of diseases. Understanding its regulation and genetic components is essential for developing targeted therapies. EDITGENE offers comprehensive CRISPR services to facilitate functional studies of carbohydrate metabolic genes, from knockout to overexpression and library screening.
References
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- 3. Manceau R et al.. 2020. Neuronal control of peripheral nutrient partitioning.. Diabetologia 63(4):673-682 PMID: 32030470
- 4. Van Etten JL et al.. 2017. Chloroviruses Have a Sweet Tooth.. Viruses 9(4) PMID: 28441734
- 5. Ding HR et al.. 2018. Lipometabolism and Glycometabolism in Liver Diseases.. Biomed Res Int 2018:1287127 PMID: 31205932
- 6. ASHWELL G. 1964. CARBOHYDRATE METABOLISM.. Annu Rev Biochem 33:101-38 PMID: 14268829
- 7. NEUFELD EF et al.. 1965. CARBOHYDRATE METABOLISM.. Annu Rev Biochem 34:297-312 PMID: 14321172
- 8. Considine MJ et al.. 2023. Metabolic regulation of quiescence in plants.. Plant J 114(5):1132-1148 PMID: 36994639
