Overview
Biotinyl Tyramide is a specialized reagent used in molecular biology for signal amplification. It is a derivative of tyramide conjugated with biotin, enabling highly sensitive detection of target molecules in assays like immunohistochemistry (IHC) and in situ hybridization (ISH). The compound leverages the catalytic activity of horseradish peroxidase (HRP) to deposit multiple biotin molecules at the target site, significantly enhancing signal intensity. Its primary role is in Tyramide Signal Amplification (TSA), a technique that improves the detection of low-abundance targets. This makes it invaluable in research and diagnostics, particularly for visualizing rare biomarkers or weakly expressed genes. The reagent is favored for its compatibility with standard lab protocols and its ability to work with a variety of detection systems.
Physical and Chemical Properties
Biotinyl Tyramide is a white to off-white powder with a molecular weight of 476.59 g/mol. It is soluble in organic solvents like DMSO and methanol, as well as in water with sonication. The compound is stable under recommended storage conditions (-20°C in a dry, dark place) but may degrade if exposed to repeated freeze-thaw cycles or prolonged light exposure. Key chemical properties include its reactivity with HRP, which drives the signal amplification process, and its biotin moiety, which binds tightly to streptavidin or avidin conjugates. These features ensure high specificity and sensitivity in detection assays. The compound’s solubility and stability profile make it suitable for a wide range of experimental conditions.
Main Applications
Biotinyl Tyramide is primarily used in Tyramide Signal Amplification (TSA) systems to enhance detection sensitivity in immunohistochemistry (IHC) and in situ hybridization (ISH). It is particularly useful for identifying low-abundance proteins or nucleic acids in tissue sections or cell cultures. The reagent’s ability to deposit multiple biotin molecules at the target site allows for robust signal generation even with scarce targets. Beyond research, it is employed in diagnostic applications, such as detecting cancer biomarkers or infectious agents. Its versatility also extends to multiplex assays, where it can be combined with other detection systems to visualize multiple targets simultaneously. The compound’s reliability and ease of integration into existing protocols make it a staple in many molecular biology labs.
Safety and Storage
Biotinyl Tyramide should be handled with care to avoid exposure. Wear gloves and work in a well-ventilated area to prevent inhalation or skin contact. Although it is not classified as highly hazardous, prolonged exposure or improper handling may cause irritation. For storage, keep the compound at -20°C in a dry, dark place. Avoid repeated freeze-thaw cycles, as this may degrade the reagent. Aliquotting the powder or solution can help maintain stability. Always check the material safety data sheet (MSDS) for specific handling and disposal guidelines, and follow institutional protocols for chemical waste management.
B2B Procurement Guide
When procuring Biotinyl Tyramide in bulk, prioritize suppliers with a track record of providing high-purity (≥95%) reagents. Request certificates of analysis (CoA) to verify purity, solubility, and performance in TSA applications. Compare prices across vendors, but prioritize reliability over cost savings, as inconsistent quality can compromise experimental results. Consider purchasing smaller test quantities before committing to large orders to evaluate batch consistency. Ensure the supplier offers proper packaging to maintain stability during shipping, such as cold packs for temperature-sensitive shipments. Establish a relationship with a trusted vendor to ensure consistent supply and access to technical support for troubleshooting.
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