Overview
4’-O-β-D-Glucosyltransferase is an enzyme that catalyzes the transfer of a glucose moiety from UDP-glucose to the 4’-hydroxyl group of flavonoids. This reaction is critical in the biosynthesis of flavonoid glycosides, which are important for plant defense mechanisms and human health. The enzyme is primarily found in plants, where it contributes to the diversity of secondary metabolites. Research on 4’-O-β-D-glucosyltransferase has expanded due to its potential applications in producing bioactive compounds. Its ability to modify flavonoid structures makes it valuable for pharmaceutical and nutraceutical industries. The enzyme is also studied for its role in enhancing the stability and bioavailability of flavonoid derivatives.
Physical and Chemical Properties
4’-O-β-D-Glucosyltransferase is typically isolated as a soluble protein with a molecular weight ranging between 50-60 kDa, depending on the source organism. It exhibits optimal activity at a neutral to slightly alkaline pH (7.0-8.5) and at temperatures around 25-37°C. The enzyme requires divalent cations like Mg²⁺ for its catalytic activity. The enzyme’s stability is influenced by storage conditions, with lyophilized forms being more stable than liquid preparations. It is sensitive to denaturation by organic solvents and extreme pH levels. Analytical methods such as SDS-PAGE and activity assays are commonly used to assess its purity and functionality.
Main Applications
In the pharmaceutical industry, 4’-O-β-D-glucosyltransferase is used to synthesize flavonoid glycosides with enhanced therapeutic properties. These glycosides often exhibit improved solubility and absorption compared to their aglycone counterparts. The enzyme is also employed in metabolic engineering to produce high-value plant-derived compounds in microbial systems. Agricultural applications include the development of crops with increased flavonoid content for improved nutritional value or stress resistance. Additionally, the enzyme is a tool in biochemical research for studying glycosylation pathways and their regulatory mechanisms.
Safety and Storage
4’-O-β-D-Glucosyltransferase should be handled with standard laboratory precautions, including the use of gloves and eye protection. While it is not classified as highly hazardous, prolonged exposure to dust or aerosols should be avoided. The enzyme is stable when stored at -20°C in a dry environment, but repeated freeze-thaw cycles can degrade its activity. For long-term storage, lyophilized preparations are recommended. Reconstituted enzyme solutions should be used immediately or aliquoted and stored at -80°C to prevent activity loss. Always refer to the supplier’s guidelines for specific storage recommendations.
B2B Procurement Guide
When procuring 4’-O-β-D-glucosyltransferase, prioritize suppliers with a proven track record in enzyme production. Key specifications to verify include enzymatic activity (U/mg), purity (≥90% by SDS-PAGE), and absence of contaminating activities. Reputable suppliers like Sigma-Aldrich, Cayman Chemical, and Bio-Connect often provide detailed certificates of analysis. Bulk purchases may qualify for discounts, but ensure proper storage facilities are available to maintain enzyme integrity. For research use, smaller quantities (1-10 mg) are commonly sufficient. Always confirm lead times and shipping conditions, as temperature fluctuations during transit can affect enzyme stability.
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