GO:0097367 carbohydrate derivative binding: Mechanism, Genes and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0097367 carbohydrate derivative binding is a molecular function defined as binding to a carbohydrate derivative, a broad class that includes phosphorylated sugars, amino sugars, sugar acids, and nucleotide sugars.
• Proteins with this function often use carbohydrate recognition domains (CRDs) or carbohydrate-binding modules (CBMs) to interact with specific sugar epitopes.
• Well-studied examples include C-reactive protein (CRP) binding to C-carbohydrate and phosphorylcholine, galectin-3 binding to polysaccharides, and fungal lectins recognizing GalNAcβ1-4GlcNAc.
• Carbohydrate derivative binding is critical for cell-cell recognition, immune signaling, microbial adhesion, and cell wall metabolism.
• Dysregulation of carbohydrate derivative binding is implicated in inflammation, cancer, and infectious diseases.
• CRISPR-based knockout, knock-in, and overexpression models enable functional dissection of carbohydrate derivative binding proteins in disease and development.
Description
Carbohydrate derivative binding (GO:0097367) is a molecular function that describes the selective interaction of a protein or biomolecule with a carbohydrate derivative. Carbohydrate derivatives include a wide range of chemically modified sugars such as phosphorylated sugars, amino sugars, sugar acids, and nucleotide sugars, which are central to metabolism, signaling, and structural integrity. This function is essential for numerous biological processes, from immune recognition to microbial pathogenesis and cell wall remodeling. Researchers study carbohydrate derivative binding to understand how proteins decode the glycan code and to develop therapeutics targeting these interactions. The QuickGO definition provides a broad framework, and experimental evidence from real PubMed literature highlights diverse proteins and mechanisms. This article synthesizes authoritative data and verified citations to provide a research-grade overview of GO:0097367, its mechanisms, key genes, disease relevance, and CRISPR-based research methods.
carbohydrate derivative binding At A Glance
| GO ID | GO:0097367 |
|---|---|
| GO term | carbohydrate derivative binding |
| Ontology | molecular_function |
| Synonym | none |
| Major function | Binding to carbohydrate derivatives, including phosphorylated, aminated, or otherwise modified sugars |
| Example proteins | C-reactive protein (CRP), galectin-3, fungal lectins, carbohydrate-binding modules (CBMs) |
| Related diseases | Inflammation, cancer, infectious diseases, cell wall disorders |
| Research methods | CRISPR knockout/knock-in, glycan arrays, surface plasmon resonance, X-ray crystallography |
What Is GO:0097367?
According to the Gene Ontology, GO:0097367 carbohydrate derivative binding is defined as the molecular function of binding to a carbohydrate derivative. This includes any carbohydrate molecule that has been chemically modified, such as through phosphorylation, amination, or oxidation. The term encompasses binding to a wide array of sugar-based ligands, from simple derivatives like glucose-6-phosphate to complex glycosaminoglycans and glycoconjugates. It does not specify a particular protein family or binding affinity, but rather describes a functional interaction that can be studied biochemically and structurally.
Why Is carbohydrate derivative binding Important in Cell Biology?
Carbohydrate derivative binding is fundamental to how cells interact with their environment and with each other. It underlies immune recognition, host-pathogen interactions, cell adhesion, and metabolic regulation. For example, C-reactive protein binds to C-carbohydrate and phosphorylcholine, playing a role in innate immunity and inflammation. Galectin-3 binds polysaccharides at a noncanonical site, influencing cancer progression and fibrosis. Fungal lectins such as CNL recognize specific N-glycan epitopes, mediating adhesion and host recognition. Carbohydrate-binding modules in microbial enzymes target complex polysaccharides for degradation, impacting carbon cycling and biotechnology. Understanding this function is therefore critical for drug discovery, vaccine development, and synthetic biology.
• Mediates innate immune recognition of pathogens through carbohydrate derivatives on microbial surfaces.
• Regulates cell adhesion and signaling in cancer and inflammation via galectins and selectins.
• Enables microbial adhesion and biofilm formation through lectins and CBMs.
• Facilitates enzymatic degradation of complex polysaccharides in cell wall metabolism.
• Involved in metabolic sensing of nucleotide sugars and phosphorylated sugars.
• Provides targets for anti-inflammatory and anti-cancer therapeutics.
• Essential for plant cell wall remodeling and biomass conversion.
• Plays a role in host-pathogen interactions and infectious disease.
• Contributes to glycoprotein quality control and trafficking.
• Offers opportunities for glycoengineering and synthetic biology.
Mechanism, Genes and Research Methods
What Happens During carbohydrate derivative binding?
In simple terms: In simple terms, a protein recognizes and attaches to a modified sugar molecule, like a lock and key.
During carbohydrate derivative binding, a protein's carbohydrate recognition domain (CRD) or carbohydrate-binding module (CBM) forms noncovalent interactions with a specific carbohydrate derivative. These interactions typically involve hydrogen bonds, van der Waals forces, and sometimes electrostatic interactions with charged groups such as phosphate or sulfate. The binding event can trigger conformational changes in the protein, leading to downstream signaling or enzymatic activity. For example, C-reactive protein binds to C-carbohydrate and phosphorylcholine, which can initiate complement activation. Galectin-3 binds polysaccharides at a noncanonical site, modulating cell adhesion and signaling. Fungal lectins like CNL bind GalNAcβ1-4GlcNAc epitopes, mediating host recognition. CBMs in microbial enzymes target specific polysaccharides, enhancing catalytic efficiency.
Structural Basis of Carbohydrate Derivative Recognition
In simple terms: The shape and chemical groups of the sugar and the protein pocket determine specificity.
Structural studies have revealed that carbohydrate derivative binding often occurs in shallow pockets or grooves on the protein surface. For instance, the galactosyl-binding module from Cellvibrio japonicus endo-xyloglucanase defines a new family of CBMs with specificity for galactose-containing substrates. The porphyran-binding CBM16 from a marine bacterium shows a unique fold that accommodates sulfated galactans. Human galectin-3 binds polysaccharides at a noncanonical site distinct from its canonical CRD, expanding its ligand repertoire. These structural insights inform the design of inhibitors and glycomimetics.
Cellular Components and Assembly
In simple terms: These binding proteins are found in various cellular locations, from membranes to extracellular matrix.
Carbohydrate derivative binding proteins are localized in diverse cellular compartments. C-reactive protein is a secreted plasma protein that binds to microbial surfaces and damaged cells. Galectin-3 is found in the cytoplasm, nucleus, and extracellular space, where it interacts with glycoconjugates. Fungal lectins like CNL are secreted or cell-wall associated, mediating adhesion. CBMs are often part of modular enzymes that are secreted or attached to the cell surface. The assembly of these proteins into multivalent complexes can enhance binding avidity and specificity.
Molecular Mechanism and Regulation
In simple terms: Binding can be turned on or off by changes in sugar availability or protein modifications.
The molecular mechanism of carbohydrate derivative binding can be regulated by post-translational modifications, such as phosphorylation, which may alter protein conformation or charge. Ligand availability, including the concentration of specific carbohydrate derivatives, also modulates binding. For example, phosphorylcholine competes with C-carbohydrate for CRP binding, influencing its functional state. In microbial systems, CBM activity can be regulated by calcium ions or pH. Additionally, multivalency and clustering of binding sites can enhance affinity and specificity.
Key Genes Involved in GO:0097367 carbohydrate derivative binding
The following genes and proteins are representative examples of carbohydrate derivative binding functions, supported by verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| CRP | Binds C-carbohydrate and phosphorylcholine; innate immunity | Inflammation and cardiovascular disease biomarker |
| LGALS3 | Galectin-3; binds polysaccharides at noncanonical site | Cancer, fibrosis, and immune regulation |
| CNL | Fungal lectin binding GalNAcβ1-4GlcNAc | Host-pathogen interactions and fungal adhesion |
| CBM16 | Porphyran-binding carbohydrate-binding module | Marine polysaccharide degradation and biotechnology |
| CjCBM | Galactosyl-binding module from Cellvibrio japonicus | Plant cell wall degradation and biofuel production |
| SSTR | Somatostatin receptors; bind carbohydrate derivatives? | Neuroendocrine signaling and cancer |
| PC-BP | Phosphorylcholine-binding proteins | Inflammation and infection |
| Galectin-1 | Binds beta-galactosides | Immune tolerance and cancer |
| Galectin-9 | Binds beta-galactosides | Immune regulation and viral infection |
| Selectins | Bind sialylated and fucosylated carbohydrates | Leukocyte adhesion and inflammation |
| Siglecs | Bind sialic acid derivatives | Immune cell signaling |
| C-type lectins | Bind various carbohydrate derivatives | Pathogen recognition and immunity |
| LysM domains | Bind peptidoglycan fragments | Bacterial sensing and plant immunity |
| CBM family 16 | Bind porphyran and related polysaccharides | Algal biomass conversion |
| CBM family 2 | Bind cellulose and chitin derivatives | Cellulase engineering |
| CRP-like proteins | Bind phosphorylcholine and carbohydrates | Innate immunity |
| Galectin-3C | C-terminal CRD of galectin-3 | Ligand specificity studies |
How Is carbohydrate derivative binding Regulated?
Carbohydrate derivative binding can be regulated at multiple levels. Post-translational modifications such as phosphorylation or glycosylation of the binding protein can alter its affinity or specificity. Ligand availability and competition between different carbohydrate derivatives modulate binding in vivo; for example, phosphorylcholine competes with C-carbohydrate for CRP binding. In microbial systems, environmental factors like pH, calcium concentration, and the presence of specific polysaccharides regulate CBM activity. Additionally, multivalency and clustering of binding sites can enhance avidity and downstream signaling.
carbohydrate derivative binding and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| CRP | Cardiovascular disease, inflammation | CRP knockout mice; point mutations in binding site |
| LGALS3 | Cancer, fibrosis | Galectin-3 knockout and overexpression cell lines |
| CNL | Fungal infection | Fungal lectin knockout strains; glycan array binding assays |
| CBM16 | Marine polysaccharide degradation | Recombinant CBM16 expression in E. coli; mutagenesis |
| SSTR | Neuroendocrine tumors | Somatostatin receptor knockout models |
Inflammation and Cardiovascular Disease
C-reactive protein (CRP) binds to C-carbohydrate and phosphorylcholine, playing a key role in innate immunity and inflammation. Elevated CRP levels are associated with cardiovascular disease and are used as a clinical biomarker. The binding of CRP to carbohydrate derivatives on damaged cells can trigger complement activation and exacerbate tissue injury.
Cancer and Fibrosis
Galectin-3 binds polysaccharides at a noncanonical site, influencing cell adhesion, migration, and apoptosis. Its dysregulation is implicated in cancer progression, metastasis, and fibrosis. Targeting galectin-3 carbohydrate binding is a therapeutic strategy in oncology and fibrotic diseases.
Infectious Diseases
Fungal lectins such as CNL bind specific N-glycan epitopes, mediating host recognition and adhesion. These interactions are critical for fungal pathogenesis and are potential targets for antifungal agents. Similarly, bacterial CBMs facilitate degradation of host glycans, contributing to infection.
Cell Wall Metabolism and Biotechnology
Carbohydrate-binding modules in microbial enzymes target plant cell wall polysaccharides, enabling efficient degradation. This function is exploited in biofuel production and industrial biotechnology. Inhibitors of cell wall synthesis that mimic carbohydrate derivatives are being developed as antibiotics.
From carbohydrate derivative binding-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of CRP carbohydrate binding affect inflammation? | CRP knockout mouse or cell line |
| What is the role of galectin-3 noncanonical binding in cancer? | Galectin-3 point mutant knock-in cell lines |
| How does CNL lectin mediate fungal adhesion? | CRISPR knockout of CNL in fungal strains |
| Can CBM16 be engineered for improved porphyran binding? | Overexpression and directed evolution in E. coli |
| What is the impact of SSTR glycosylation on ligand binding? | SSTR knock-in with tagged glycosylation sites |
| How does phosphorylcholine competition regulate CRP function? | CRP overexpression and point mutation models |
How to Study the carbohydrate derivative binding Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Glycan array | Binding specificity to various glycans | Profiling lectins and CBMs |
| Surface plasmon resonance | Binding kinetics (kon, koff, KD) | Quantifying CRP-carbohydrate interactions |
| Isothermal titration calorimetry | Binding thermodynamics | Characterizing galectin-3 binding |
| X-ray crystallography | 3D structure of protein-ligand complex | Structural basis of CBM16 binding |
| CRISPR knockout | Loss-of-function phenotype | Testing CRP role in inflammation |
| CRISPR knock-in | Tagged or mutant protein expression | Studying galectin-3 localization |
| Overexpression | Gain-of-function phenotype | Enhancing CBM production |
| Glycomics (mass spec) | Carbohydrate derivative profiling | Discovering novel ligands |
Glycan Arrays and Binding Assays
Glycan arrays allow high-throughput screening of carbohydrate derivative binding specificity. They are used to profile lectins, antibodies, and CBMs against hundreds of glycan structures. Surface plasmon resonance (SPR) and isothermal titration calorimetry (ITC) provide quantitative binding kinetics and thermodynamics.
Structural Biology
X-ray crystallography and NMR spectroscopy reveal atomic details of carbohydrate derivative binding, informing inhibitor design. For example, the structure of CBM16 with porphyran elucidated its binding mode, and the galactosyl-binding module structure defined a new CBM family.
CRISPR-Based Functional Genomics
CRISPR knockout, knock-in, and overexpression models enable functional dissection of carbohydrate derivative binding proteins in cells and organisms. These models help link binding activity to phenotypes such as inflammation, cancer, and infection.
Proteomics and Glycomics
Mass spectrometry-based glycomics and proteomics identify carbohydrate derivatives and their binding partners in complex biological samples. These methods are essential for discovering novel carbohydrate-binding proteins and pathways.
How CRISPR Can Be Used to Study GO:0097367 carbohydrate derivative binding
Knockout
CRISPR knockout of genes encoding carbohydrate derivative binding proteins, such as CRP or LGALS3, allows researchers to assess loss-of-function phenotypes in inflammation, cancer, and infection models. Knockout cell lines and mice are valuable for validating target biology.
Point Mutation
Point mutations in carbohydrate recognition domains can abrogate or enhance binding without affecting protein expression. For example, mutating key residues in galectin-3 or CRP can dissect the contribution of specific binding interactions to disease.
Knock-in
Knock-in of tagged or mutant versions of binding proteins enables real-time imaging and biochemical tracking. Tagged knock-in models for galectin-3 or CBMs facilitate localization and interaction studies.
Overexpression
Overexpression of carbohydrate derivative binding proteins, such as CBM16 or CNL, is used to produce sufficient protein for structural and functional studies, and to investigate gain-of-function effects in cells.
How EDITGENE Supports carbohydrate derivative binding Research
Researchers studying carbohydrate derivative binding-related genes often need to determine whether a candidate gene is causally involved in a specific biological process or disease. EDITGENE provides comprehensive CRISPR-based services to accelerate this research, from knockout to knock-in and overexpression models, as well as library screening and bioinformatics support.
Contact EDITGENE today to design your custom CRISPR model for carbohydrate derivative binding research.
Frequently Asked Questions About carbohydrate derivative binding
What is GO:0097367 carbohydrate derivative binding?
GO:0097367 is a Gene Ontology molecular function term defined as binding to a carbohydrate derivative, which includes chemically modified sugars such as phosphorylated or aminated sugars.
What genes are involved in carbohydrate derivative binding?
Key genes include CRP, LGALS3, CNL, and various carbohydrate-binding module (CBM) genes from microbes.
How is carbohydrate derivative binding studied?
It is studied using glycan arrays, surface plasmon resonance, X-ray crystallography, and CRISPR-based functional genomics.
What diseases are associated with carbohydrate derivative binding?
Diseases include inflammation, cardiovascular disease, cancer, fibrosis, and infectious diseases.
What is the role of C-reactive protein in carbohydrate derivative binding?
C-reactive protein binds C-carbohydrate and phosphorylcholine, playing a role in innate immunity and inflammation.
How does galectin-3 bind carbohydrates?
Galectin-3 binds polysaccharides at a noncanonical site in its carbohydrate recognition domain, influencing cell adhesion and signaling.
What are carbohydrate-binding modules (CBMs)?
CBMs are protein domains that bind carbohydrates, often found in enzymes that degrade complex polysaccharides.
Can CRISPR be used to study carbohydrate derivative binding?
Yes, CRISPR knockout, knock-in, and overexpression models enable functional studies of genes involved in carbohydrate derivative binding.
What is the clinical significance of carbohydrate derivative binding?
It is important for biomarker development, drug discovery, and understanding host-pathogen interactions.
How can EDITGENE help with carbohydrate derivative binding research?
EDITGENE provides CRISPR knockout, point mutation, knock-in, overexpression, library screening, and bioinformatics services tailored to carbohydrate derivative binding studies.
Conclusion
Carbohydrate derivative binding (GO:0097367) is a broad but critical molecular function that underlies diverse biological processes, from immune recognition to microbial pathogenesis and cell wall metabolism. The verified literature highlights key proteins such as CRP, galectin-3, fungal lectins, and CBMs, and their roles in health and disease. Advances in CRISPR-based models and glycomics are accelerating our understanding of these interactions, offering new therapeutic opportunities. EDITGENE stands ready to support researchers with cutting-edge CRISPR services to dissect carbohydrate derivative binding in any biological context.
References
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- 3. Lee RT et al.. 2003. Carbohydrate-binding properties of human neo-CRP and its relationship to phosphorylcholine-binding site.. Glycobiology 13(1):11-21 PMID: 12634320
- 4. Gotschlich EC et al.. 1982. Binding of C-reactive protein to C-carbohydrate and PC-substituted protein.. Ann N Y Acad Sci 389:163-71 PMID: 7046573
- 5. Mei X et al.. 2024. Characterization and structural identification of a family 16 carbohydrate-binding module (CBM): First structural insights into porphyran-binding CBM.. Int J Biol Macromol 265(Pt 2):131041 PMID: 38518929
- 6. Miller MC et al.. 2016. Binding of polysaccharides to human galectin-3 at a noncanonical site in its carbohydrate recognition domain.. Glycobiology 26(1):88-99 PMID: 26646771
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