SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2) also known as Covid19 (2019 Novel Coronavirus) is a virus that causes illnesses ranging from the common cold to severe diseases. The spike protein is a type I transmembrane protein containing two subunits, S1 and S2. S1 mainly contains a receptor binding domain (RBD), which accounts for recognizing the cell surface receptor, ACE2. S2 contains basic elements needed for the membrane fusion. Recent publications indicate that S1-RBD domain can induce virus neutralizing-antibody and T cell response.
1.ELISA plate pre-coated by 2 μg/ml (100 μl/well) Human S-RBD, mFc-His tagged protein (PKSV030276) can bind Anti-SARS-CoV-2 Neutralizing antibody(E-AB-V1028) in a linear range of 0.24-15.62 ng/ml. 2.ELISA plate pre-coated by 2 μg/ml (100 μl/well) S-RBD, mFc-His tagged protein (PKSV030276) can bind Human ACE2, hFc Tagged protein（PKSR030492） in a linear range of 0.488-49.83 ng/ml.
This product is provided as lyophilized powder which is shipped with ice packs.
> 90 % as determined by reducing SDS-PAGE.
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|Stability and Storage||
Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months.
|AP Mol Mass|
Lyophilized from sterile PBS, pH 7.4. Normally 5 % – 8% trehalose is added as protectants before lyophilization.