- DescriptionAnti-SARS-CoV-2 Neutralizing Antibody, Human IgG1 (SAD-S35) is isolated from a SARS-CoV-2 infected patient and is recombinantly produced from human 293 cells (HEK293). This antibody recognizes the SARS-CoV-2 Spike Protein RBD domain and inhibits the interaction between SARS-CoV-2 RBD and ACE2 with an IC50 of 1.47 μg/mL using SARS-CoV-2 Inhibitor Screening Kit (Cat. No. EP-105). Pseudovirus assay shows that this antibody has potent neutralizing activity against pseudovirus bearing SARS-CoV-2 Spike protein.
- IsotypeHuman IgG1/kappa
- SpecificityThis product is a specific neutralizing antibody against SARS-CoV-2 Spike Protein RBD domain and no cross-reactivity was detected against SARS-CoV Spike protein. The cross-reactivity with other coronaviruses has not been tested yet.
- Purity
>95% as determined by SDS-PAGE.
- Formulation
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 . Normally trehalose is added as protectant before lyophilization.
- Reconstitution
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
- Storage
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:
- 4-8°C for 12 months in lyophilized state;
- -70°C for 3 years under sterile conditions after reconstitution.
Serial dilutions of Anti-SARS-CoV-2 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 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 Neutralizing Antibody titer in different concentrations of human serum.Neutralizing titer of Anti-SARS-CoV-2 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).="">
- BackgroundIt"s been reported that SARS-CoV-2 can infect the human respiratory epithelial cells through interaction with the human ACE2 receptor. The spike protein is a large type I transmembrane protein containing two subunits, S1 and S2. S1 mainly contains a receptor binding domain (RBD), which is responsible for recognizing the cell surface receptor. S2 contains basic elements needed for the membrane fusion.The S protein plays key parts in the induction of neutralizing-antibody and T-cell responses, as well as protective immunity.
Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.
