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Your Position: Home > Protein-coupled magnetic beads > Spike RBD > MBS-K043

SARS-CoV-2 (Omicron) Spike RBD-coupled Magnetic Beads

Materials Provided
ItemsSize (2mg)Size(5mg X 2)
Particle size2 μm2 μm
Physical appearancePowder mixturePowder mixture
Amount of Coupled Protein>702pmol (20μg) Spike RBD protein/mg beads>702 pmol (20μg) Spike RBD protein/mg beads
Binding Capacity>200 pmol (15μg) Anti-S1-SCT-ic1 Ab/mg beads>200 pmol (15μg) Anti-S1-SCT-ic1 Ab/mg beads
FormulationPBS, pH 7.4, with 10% TrehalosePBS, pH 7.4, with 10% Trehalose
Reconstitution2 mL sterile deionized water (1 mg beads/mL)5 mL sterile deionized water (1 mg beads/mL)
  • Background
    The SARS-CoV-2 (Omicron) Spike RBD-coupled Magnetic Beads is produced by coupling biotinylated SARS-CoV-2 spike RBD to streptavidin-conjugated magnetic beads. The spike RBD coupled to the beads contains the critical mutations identified in the SARS-CoV-2 Omicron variants (BA.1). The pre-coupled beads are ready to use for capturing anti-SARS-CoV-2 antibody or ACE2 protein from your sample with high specificity.
  • Application
    This product is intended for immunocapture, biopanning and flow cytometry. This is a non-sterile product.
  • Reconstitution

    See Certificate of Analysis (CoA) for detailed instruction.

  • Storage
    Upon receipt, please store the beads at -20°C for 1 year in lyophilized state. Please avoid more than 3 freeze-thaw cycles. Immediate use after reconstitution is highly recommended.
  • Assay Principles
    Antibody Purification: 1. Resuspend the lyophilized beads by adding the buffer of choice. 2. Add analyte to the suspension, mix and incubate to enable specific binding of the beads and the target protein. 3. Magnetize beads, remove supernatant, and wash unbound protein fractions to capture target protein-bound beads. 4. Wash, magnetize the beads and collect purified target protein for use in downstream applications.

    The magnetic beads technology makes use of the easy and efficient collection of beads in magnetic field to facilitate antibody purification in a simple workflow of “bind-wash-elute”. In contrast to common separation techniques, this method does not require columns or centrifugation, and is therefore ideal in high-throughput applications.

Typical Data
 Spike RBD ELISA

Immobilized 29.8 μg Spike RBD protein/1mg beads can bind the Anti-S1 Antibody (Cat.No.S1N-M122) with an EC50 of 0.05449 μg/mL (QC tested).

 Spike RBD ELISA

Accelerated stability test. After placing the lyophilized beads at 37°C for 7 days, binding activity between the SARS-CoV-2 (Omicron) Spike RBD-coupled Magnetic Beads (Cat.No. MBS-K043) and Mouse,Anti-S1 showed little deviation from the unaccelerated sample (%RSD<15%). Data were measured on day 0, 3, 7 respectively.

 Spike RBD ELISA

Freeze-thaw stability test. After different freeze-thaw cycles, binding activity between the SARS-CoV-2 (Omicron) Spike RBD-coupled Magnetic Beads (Cat.No. MBS-K043) and Mouse,Anti-S1 showed little deviation from the unfreeze-thaw sample (%RSD<10%). Three freeze-thaw cycles were performed.

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