膜杰作
Star Staining
& Cat.No. | Items | Size （2mg） | Size（5mg X 2） |
| Particle size | 2 μm | 2 μm |
| Physical appearance | Powder mixture | Powder mixture |
| Amount of Coupled Protein | ≈1254 pmol (36 μg) Spike RBD/mg Beads | ≈1254 pmol (36 μg) Spike RBD/mg Beads |
| Binding Capacity | >40 μg anti-SARS2-CoV-2 Spike S1 antibody/mg beads; >40 μg ACE2 protein / mg beads | >40 μg anti-SARS2-CoV-2 S1 antibody/mg beads; >40 μg ACE2 protein / mg beads |
| Formulation | PBS, pH7.4, with 10% Trehalose | PBS, pH7.4, with 10% Trehalose |
| Reconstitution | 2 mL sterile deionized water (1 mg beads/mL) | 5 mL sterile deionized water (1 mg beads/mL) |
背景（Background）
The pre-coupled magnetic beads coupled with biotinylated SARS-CoV-2 Spike RBD protein to streptavidin conjugated magnetic beads, which can capture the Anti- SARS-CoV-2 antibody or ACE2 protein from cell or serum sample. The beads are in uniform size, narrow size distribution with large surface area and unique surface coating, which can help you get the best performance and highly reproducible results. This very first SARS-CoV-2 Spike protein RBD-coupled magnetic beads will bring great convenience with minimum non-specific binding and developed protocols. This ready to use products could greatly save your time and hassle.
表达区间及表达系统（Source）
SARS-CoV-2 Spike RBD protein is expressed from human 293 cells (HEK293). It contains AA Arg 319 - Phe 541(Accession # QHD43416.1).
应用说明（Application）
This product is intended for immunocapture, biopanning and flow cytometry. This product is produced non-sterile.
重构方法（Reconstitution）
See Certificate of Analysis (CoA) for detailed instruction.
存储（Storage）
Upon receipt, please store the lyophilized beads at -20°C for long term storage. The shelf life is 1 year at -20°C in lyophilized form.
Please avoid more than 3 freeze-thaw cycles once reconstitution, immediate use after reconstitution is highly recommended.
原理（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.
制剂（Formulation）
Please contact us for detailed information.
Contact us for customized product form or formulation.
典型数据-Typical Data
Immobilized 40 μg SARS-CoV-2 S protein RBD to 1mg Beads, can bind the Anti-SARS-CoV-2 Spike S1 Antibody with an EC50 of 0.8887 μg/mL.
Protocol
Immobilized 40 μg SARS-CoV-2 S protein RBD to 1mg Beads, can bind the Human ACE2, Fc Tag (AC2-H5257) with an EC50 of 1.008 μg/mL.
Protocol
The binding curves between SARS-CoV-2 S RBD pre-coupling magnetic beads (Cat. No. MBS-K002) after different freeze-thaw cycles and anti-SARS-CoV-2 S1 antibody. 0.1 mg of Beads (1 mg/ml, 100 μl) was washed three times and the supernatant was removed. 100 μL antibodies of the corresponding concentration (10 μg/ml-0.039 μg/ml) were added. Fluorescent labeled secondary antibody was added for detection (Routinely tested).
Protocol
