Introduction: Epidermal growth factor (EGF) is a hormone that stimulates division of epidermal and other cells. Labeling with biotinylated EGF can be followed by second-step labeling with streptavidin conjugates. Biotinylated EGF has enabled researchers to investigate receptor-membrane interactions, study receptor distribution, calculate rate constants for the interaction of EGF with its receptor, and more. Conjugation: The EGF was conjugated with Biotin under optimum conditions, and unreacted Biotin was removed. Recommended Usage: Fluorescence is typically monitored using a flow cytometer, fluorescence microscope, or fluorimeter. For immunofluorescent staining, the recommended use of this reagent is ≤ 0.5µg per million cells in 100 µl staining volume. It is recommended that the reagent be titrated for optimal performance for different cell lines.
Lyophilized from PBS (pH 7.4) buffer containing 1% BSA
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This product should be reconstituted in 100μL of deionized water to make a 0.2mg/mL stock solution. Prepare working dilution on day of use. Stock solution is stable for about 8 weeks at 2-8°C as an undiluted liquid. Avoid freeze-thaw cycles. Protect from light.
Recombinant Human EGF Protein (Biotin) (rp170191) - Flow Cytometry Flow analysis of EGF receptors (red line) in A431 Cells. Cells were labeled with Recombinant Human EGF Protein (Biotin) (rp170191) at 1/2500 dilution for 1 hour at 4°C, and then incubated with Streptavidin protein (APC) (np169048) at a dilution of 1/400 for 30 minutes at 4°C in the dark. Unlabeled Cells (black line) were used as a negative control.