GDP-D-mannose disodium salt—core sugar nucleotide for glycosylation research 148296-46-2

GDP-D-mannose disodium salt is a crucial member of the sugar nucleotide family and plays an irreplaceable role in the cellular glycosylation process. As a key activated donor of mannose residues, it is directly involved in post-translational modification of proteins and lipids, affecting their structure, stability and biological functions. From basic biochemistry research to cutting-edge biopharmaceutical development, this molecule has become a fundamental tool in unraveling the secrets of the sugar code and driving innovation in glycosylation-related therapies.

Chemical Information

Chemical name: Guanosine 5'-(trihydrogen diphosphate)P'-ALPHA-D-mannosyl ester disodium salt

Common name: GDP-D-mannose disodium salt

Chemical formula: C16H23N5Na2O16P2

Molecular weight: 649.304782 g/mol

CAS number: 148296-46-2

Category: Sugar Nucleotides

Structural features

The structural core of GDP-D-mannose disodium salt lies in its design that exquisitely combines energy carriers with sugar units:

Activated sugar donor structure: The molecule is composed of guanosine diphosphate (GDP) and α-D-mannose covalently connected through a pyrophosphate bond (P'-O-C). This structure puts mannose in a high-energy activated state, which can be efficiently recognized by glycosyltransferases and transferred to specific acceptor molecules (such as proteins, lipids or oligosaccharide chains).

Enhanced water solubility and stability: The disodium salt form significantly improves the solubility of the compound in physiological buffer systems, making it convenient for in vitro biochemical experiments. Although the pyrophosphate bond can be hydrolyzed under certain conditions, it can maintain sufficient stability in the enzymatic reaction system, ensuring its reliability as a specific substrate.

Stereochemical specificity: The mannose moiety exists in the α-D-configuration, which is completely consistent with the substrate stereochemistry recognized by mannosyltransferases in most organisms, ensuring its biological relevance in research or applications.

Main applications and advantages

Key substrates for glycoprotein and glycolipid biosynthesis

In eukaryotic cells, protein N-linked glycosylation, O-linked glycosylation, and glycolipid synthesis all rely on specific glycosyltransferases to transfer sugar groups from nucleotide sugars (such as GDP-D-mannose) to growing sugar chains. GDP-D-mannose disodium salt is the most direct mannose donor in the mannosylation reaction. It is an indispensable biochemical reagent when reconstructing glycosylation pathways in vitro, studying sugar chain assembly mechanisms, or producing recombinant glycoproteins with specific glycoform structures. Its high purity and bioactivity are critical to ensure the efficiency and fidelity of glycosylation reactions.

Tool molecules for glycosyltransferase research and drug development

Glycosyltransferases are important drug targets, and their dysfunction is associated with various pathological conditions such as cancer, congenital diseases of glycosylation (CDG), and autoimmune diseases. GDP-D-mannose disodium salt serves as a starting point for the design of natural substrates or competitive inhibitors of this type of enzyme and is widely used in enzyme kinetic analysis, high-throughput screening, inhibitor potency evaluation, and enzyme structure-function relationship research. The tools developed based on this will help discover new therapeutic strategies to regulate abnormal glycosylation processes.

Disease model research and potential biomarker exploration

Certain genetic diseases, such as mannosidoses or congenital glycosylation disorders related to mannose metabolism, may alter the level or utilization efficiency of the intracellular GDP-D-mannose metabolic pool. In cellular or animal models, exogenous addition or traceability by isotope-labeled GDP-D-mannose can provide insights into disease mechanisms. In addition, changes in the levels of intermediates in related metabolic pathways may also become potential biomarkers for auxiliary diagnosis.

An important cornerstone of basic glycobiology and synthetic biology

In exploring the role of sugars in cell recognition, signal transduction, pathogen infection, and more, GDP-D-mannose disodium salt is a key tool for manipulating the composition of the cell surface glycocalyx. In the field of synthetic biology, it is one of the precursor modules required to construct artificial cellular glycosylation systems or engineer microorganisms to produce rare glycoside compounds. A deeper understanding of sugar nucleotide metabolic networks also relies on the precise analysis of such high-purity standards.

Conclusion

GDP-D-mannose disodium salt is much more than a metabolic intermediate. As a core molecule that bridges energy metabolism and complex sugar chain synthesis, it provides a key entrance to deciphering the delicate glycosylation regulatory network in life processes. From elucidating basic cellular physiological and pathological mechanisms to helping develop the next generation of therapeutic proteins, antibodies or cell therapies based on glycoengineering, its value is becoming increasingly prominent with the renaissance of glycoscience. This molecule will continue to play an indispensable role in the journey of exploring the third major code of life, the sugar code.

The above information is provided by the editor of KASONS and is for scientific research only.