Glycosylation: The Foundation for Advanced Glycobiology

Most proteins are post-translationally, and the most important modification of many secretory and membrane-related proteins in eukaryotic cells is glycosylation, that is, the attachment of one or more glycan chains. Glycan chains of glycoprotein are mainly connected to Asn residues of peptide backbone by N-glycopeptide bond or Ser / Thr residues by O-glycopeptide bond.

The glycans attached to proteins have structural diversity, and each glycosylated polypeptide is usually associated with a population of different glycan structures, which leads to the observation of considerable glycosylation heterogeneity in many glycoproteins. Current techniques generally cannot analyze the complete glycoproteins. Therefore, oligosaccharide analysis is mainly carried out after the release of the oligosaccharides from the polypeptide. Glycan release technology is based on enzyme or chemical programming. Each technology has its own advantages, and the choice of technology will depend on the type of glycosylation and the nature and quantity of samples.

CD BioGlyco stands at the forefront of glycomics research, offering a comprehensive and highly specialized glycan release service. Leveraging our expertise, we provide robust and reliable solutions that are foundational for in-depth glycan analysis. This essential preparatory step is key to unlocking the full biological potential encoded within glycosylation, ensuring the isolation of intact glycans for precise downstream characterization by advanced analytical platforms.

Comprehensive Glycan Release: Tailoring Solutions for Every Glycosylation Challenge

CD BioGlyco offers an extensive array of glycan release options, meticulously designed to cater to the diverse requirements of glycomics research and development. Our comprehensive service scope ensures that virtually any glycosylation linkage is effectively targeted and analyzed.

• Enzymatic Release of N-Glycan

Utilizing PNGase F, we provide highly efficient and reproducible release of N-linked glycans from a wide range of glycoproteins. This method is the preferred choice for applications requiring intact N-glycan structures for subsequent profiling and structural elucidation.

• Enzymatic Release of Fucose

We employ specific fucosidases to selectively cleave terminal fucose residues. This service is invaluable for studying the role of fucosylation in biological processes, such as inflammation and cancer, or for preparing glycans for further analysis by removing this common modification.

• Enzymatic Release of Galactose

Our service includes the use of highly purified galactosidases for the enzymatic removal of terminal galactose residues. This is crucial for structural determination, especially in complex glycans, and for investigating the biological significance of galactosylation, particularly relevant in areas like blood group antigens and immune regulation.

• Enzymatic Release of N-Acetylgalactosamine

Targeting α-N-acetylgalactosaminidase, this service enables the selective release of N-acetylgalactosamine. This is particularly useful for dissecting specific glycan linkages and for research into O-linked glycosylation pathways.

• Enzymatic Release of O-Glycosylated Protein

For O-linked glycans, we employ O-glycosidase and other broad-specificity enzymes to facilitate their release from various O-glycosylated proteins. This service provides a gentle yet effective way to obtain O-glycans for downstream analysis, particularly for structures amenable to enzymatic cleavage.

• Enzymatic Release of Core-1 O-Glycan

Focusing on one of the most common O-glycan core structures, our specialized service ensures the efficient enzymatic release of core-1 O-glycans, which are vital in cell adhesion, signaling, and disease. This targeted approach allows for focused analysis of these specific and biologically significant structures.

• Enzymatic Release of Sialic Acid

Using sialidases, we offer precise enzymatic removal of terminal sialic acid residues. This is essential for understanding the roles of sialylation in cellular communication, viral entry, and immune evasion, and for preparing glycans for further analysis where desialylation is required.

• Hydrazinolysis: A powerful chemical method for the release of both N-linked and, to a lesser extent, O-linked glycans. This technique is particularly valuable for the efficient release of glycans from difficult-to-denature or insoluble glycoproteins.
• Reductive β-Elimination: The gold standard for the chemical release of O-linked glycans. This method is highly effective for a wide range of O-glycan structures, including those found on mucins and other heavily O-glycosylated proteins. The inclusion of a reducing agent prevents glycan "peeling", ensuring the integrity of the released structures for subsequent analysis.

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Applications

• Biopharmaceutical development: Essential for characterization of therapeutic proteins (e.g., antibodies, recombinant proteins), biosimilar development, and quality control of glycoconjugate vaccines.
• Biomarker discovery: Identification of novel glycan biomarkers for early disease detection, progression monitoring, and therapeutic response assessment in various diseases, including cancer, autoimmune disorders, and infectious diseases.
• Fundamental glycoscience research: Deciphering the roles of glycans in cell-cell interactions, immune recognition, host-pathogen interactions, protein folding, and other fundamental biological processes.

Advantages

• Comprehensive expertise: Our team possesses deep scientific knowledge in both enzymatic and chemical glycan release methodologies. We expertly navigate the complexities of diverse glycan structures and sample matrices to provide optimal solutions.
• Tailored solutions: We understand that each research project is unique. Our services are highly customizable, offering flexible options for both N-glycan and O-glycan release, alongside specific monosaccharide targeting.
• Uncompromising quality and reproducibility: We adhere to stringent quality control standards at every stage of the workflow. Our optimized protocols and state-of-the-art facilities guarantee highly reproducible and reliable glycan release, providing confidence in your downstream analytical results.

Frequently Asked Questions

CD BioGlyco is committed to accelerating your research with our unparalleled glycan release service and comprehensive glycomics solutions. Please feel free to contact us our team of experienced scientists is ready to discuss your specific project needs and provide tailored recommendations.

Associated Services

To further support your comprehensive glycomics research and development endeavors, CD BioGlyco offers a suite of complementary services designed to provide end-to-end solutions for glycan analysis and beyond.

• Glycan Separation and Purification Service
• Glycomic Characterization Service
• Glycoprotein Quantification
• Site Occupation

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