>95% as determined by SDS-PAGE.
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 . Normally trehalose is added as protectant before lyophilization.
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
-20 to -70°C for 12 months in lyophilized state from date of receipt;
-70°C for 3 months under sterile conditions after reconstitution.
Anti-SARS-CoV-2 RBD Neutralizing Antibody, Human IgG1 on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 95%.
Serial dilutions of Anti-SARS-CoV-2 RBD Neutralizing Antibody, Human IgG1 (Cat.No. SAD-S35) was detected by SARS-CoV-2 Inhibitor screening Kit (Cat.No. EP-105) with a half maximal inhibitory concentration (IC50) of 1.472 μg/mL (QC tested).
Immobilized SARS-CoV-2 S1 protein, His Tag (Cat. No. S1N-C52H4) at 2 μg/mL (100 μL/well) can bind Anti-SARS-CoV-2 RBD Neutralizing Antibody, Human IgG1 (Cat. No. SAD-S35) with a linear range of 0.2-1.95 ng/mL (QC tested).
Determination of Anti-SARS-CoV-2 RBD Neutralizing Antibody titer in different concentrations of human serum.
Neutralizing titer of Anti-SARS-CoV-2 RBD Neutralizing Antibody, Human IgG1 (Cat. No. SAD-S35) measured by Anti-SARS-CoV-2 neutralizing antibody titer serologic assay kit (Cat. No. TAS-K003) in different concentrations of human serum (CV < 30%) (Routinely tested).
Serial dilutions of Anti-SARS-CoV-2 Spike RBD Neutralizing Antibody (Cat. No. SAD-S35) was incubated with SARS-CoV-2 pseudotyped virus at 37 ℃ for 1 hour. Afterward, Huh-7 cells were added, followed by incubation at 37 ℃ for 24h. Chemiluminescence detection was performed and the virus neutralization titers (IC50) is 2.181 nM using the Reed-Muench method.
FACS analysis shows that the binding of SARS-CoV-2 S protein RBD, Mouse IgG2a Fc Tag (Cat. No. SPD-C5259) to Vero E6 cells surface ACE2 was inhibited by increasing concentration of Anti-SARS-CoV-2 Neutralizing Antibody, Human IgG1 (Cat. No. SAD-S35). The concentration of SARS-CoV-2 S protein RBD used is 5μg/ml. The IC50 is 10.33 μg/ml (Routinely tested).
FACS analysis shows that the binding of SARS-CoV-2 S1 protein, Mouse IgG2a Fc Tag (Cat. No. S1N-C5257) to Vero E6 cells surface ACE2 was inhibited by increasing concentration of Anti-SARS-CoV-2 RBD Neutralizing Antibody, Human IgG1 (Cat. No. SAD-S35). The concentration of SARS-CoV-2 S1 protein used is 3ug/ml. The IC50 is 1.352 μg/ml (Routinely tested).
Authors: Park KS, Bazzill JD, Son S, et al.
Journal: J Control Release 2020
Application: ELISA
Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.
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