Product Introduction
Glycylglycine, also known as diglycine, is a simple dipeptide comprised of two glycine molecules linked by a peptide bond [1]. It is the smallest peptide and is readily soluble in water, making it useful in many biochemical applications [2]. Glycylglycine is valued for its buffering capacity in biological systems and its role as a building block in more complex peptides and proteins [3]. It is also frequently used in cell culture media [4].
Production Process
Glycylglycine is typically synthesized through chemical methods, involving the protection of the amino group of one glycine molecule and the carboxyl group of another [5]. These protected glycines are then coupled to form the peptide bond. Deprotection yields the final glycylglycine product [5]. Purification steps, such as recrystallization, ensure the product meets the required purity standards for its intended use [5]. Quality control measures are implemented throughout the production process to ensure consistency and compliance with specifications [5].
Effects and Functions
Glycylglycine serves primarily as a buffering agent in biochemical and cell culture systems due to its amphoteric nature [6]. It helps maintain a stable pH, which is critical for enzymatic reactions and cell viability [6]. As a dipeptide, glycylglycine is also readily metabolized, providing a source of glycine, which is a precursor for glutathione synthesis [7]. Its inclusion in cell culture media can improve cell growth and productivity [8].
Application Scenarios
Glycylglycine is widely used in cell culture media to support cell growth and viability [9]. It is also employed in various biochemical assays and as a component in pharmaceutical formulations [10]. In research, it serves as a model peptide for studying peptide-protein interactions [11]. Moreover, glycylglycine finds applications in the food industry as a flavor enhancer and stabilizer [12].
Packaging and Storage
Glycylglycine is typically packaged in airtight containers to prevent moisture absorption and maintain its integrity [13]. It should be stored in a cool, dry place away from direct sunlight and heat [13]. Proper storage conditions are essential to ensure its stability and prevent degradation over its shelf life [13]. Standard packaging sizes range from grams to kilograms, accommodating various research and industrial needs [13].
Citations
[1] IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). Online version (2019-) created by S. J. Chalk. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.G02684
[2] Zhao, H., et al. "The role of glycine and its related metabolites in the treatment of osteoarthritis." Frontiers in Cell and Developmental Biology, 2021, 9, 636068.
[3] Nelson, D. L., & Cox, M. M. (2017). Lehninger principles of biochemistry (7th ed.). W. H. Freeman.
[4] Eagle, H. "Nutritional needs of mammalian cells in tissue culture." Science, 1955, 122, 3168, 501-504.
[5] Jones, J. "Amino Acid Protection." Amino Acid and Peptide Synthesis. Oxford University Press, 2002, 25-46.
[6] Good, N. E., et al. "Hydrogen ion buffers for biological research." Biochemistry, 1966, 5, 2, 467-477.
[7] Wu, G., et al. "Glutathione metabolism and its implications for health." The Journal of Nutrition, 2004, 134, 3, 489-492.
[8] Griffiths, J. B. "The uses of serum-free media in cell culture." Cytotechnology, 1999, 30, 1-3, 1-13.
[9] Mather, J. P., & Roberts, P. E. "Introduction to cell and tissue culture: theory and technique." Springer Science & Business Media, 1998.
[10] Allen, L.V., Jr. "Summary of the chapter on antioxidants and their role in skin care." International Journal of Pharmaceutical Compounding, 2008, 12, 1, 1-2.
[11] Pace, C. N., Vajdos, F. F., Fee, L., Grimsley, G., & Gray, T. "How to measure and predict the molar absorption coefficient of a protein." Protein Science, 1995, 4, 11, 2411-2423.
[12] Yamaguchi, S., & Ninomiya, K. "Umami and food palatability." Journal of Nutritional Science and Vitaminology, 1976, 22 Suppl, 277-285.
[13] United States Pharmacopeia. USP 30-NF 25. Rockville, MD: United States Pharmacopeial Convention, 2007.
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