Product Details
FAB
- Simple and fast operation - No complicated washing steps, significantly reducing time.
- High batch consistency - Strict control over raw materials and finished product quality, ensuring a stable supply.
- Accurate and reliable results - High sensitivity with minimal matrix effects.
- High throughput capability - Support multiple product specifications, ideal for high-throughput screening.
- Fast completion - Results in just 1 hour.
Product Specifications
Assay TypeCompetition-TR-FRETReactivityHumanRegulatory StatusRUOAssay Time1 hrSample volume10 μLProduct Overview
The Human Transferrin / Transferrin R Inhibitor Screening Kit (TR-FRET) is based on a homogeneous (no wash) competitive TR-FRET technology (Time-Resolved Fluorescence Resonance Energy Transfer) to screen for inhibitors of human transferrin binding to transferrin R within 0.5-1 hours. It can also be used as a universal detection tool to identify the ability of human transferrin to bind to human transferrin R.
Storage
1. Store the unopened kit at 2-8°C upon receipt.
2. Locate the expiration date on the outer packaging and do not use reagents beyond their expiration date.
3. The opened kit should be stored according to the storage conditions listed in the Components Table. The shelf life of the opened kit is 30 days from the date of opening.
Materials Provided
IDComponentsSizeFRTP032-C01Human Transferrin Protein Europium-chelate100 tests/500 testsFRTP032-C02FA Labeled Human Transferrin R100 tests/500 testsFRTP032-C03Human Transferrin Protein20 μg/100 tests 100 μg/500 testsDB-04TR-FRET Sample Dilution Buffer, pH7.450 mL/100 tests & 500 testsDB-05TR-FRET Detection Buffer, pH7.450 mL/100 tests & 500 testsAssay Principles
This Human Transferrin / Transferrin R Inhibitor Screening Kit (TR-FRET) is based on TR-FRET technology (Time-Resolved Fluorescence Resonance Energy Transfer). This assay uses the mixture of biotinylated human transferrin and Europium-chelate labeled streptavidin as the Donor and FA Labeled Human Transferrin R as the Acceptor.
— When the sample does not contain the inhibitors that block the binding of human transferrin to human transferrin R, the Donor and Acceptor are in close proximity because of the binding of human transferrin and human transferrin R. Upon Donor excitation with light of a specific wavelength (337nm), in addition to Donor emission (620nm), non-radiative transfer of energy occurs between Donor and Acceptor, resulting in Acceptor emission (665nm).
— When the sample contains the inhibitors that block the binding of human transferrin to human transferrin R, the components inhibit the binding between the Donor and Acceptor and thereby prevent FRET from occurring.

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Performance Data
Bioactivity-TR-FRET
Please refer to DS document for the assay protocol.

In this TR-FRET assay, Human Transferrin Protein Europium-chelate is used as the Donor and FA Labeled Human Transferrin R is used as the Acceptor. An inhibition Assay was performed to evaluate the interaction between human transferrin and human transferrin R using Human Transferrin Protein resulting in a typical IC50 of 1.466 nM (QC tested).
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