GENERAL INFORMATION
Gene Name Synonym:	coronavirus spike Protein, 2019-nCoV; cov spike Protein, 2019-nCoV; ncov RBD Protein, 2019-nCoV; ncov s1 Protein, 2019-nCoV; ncov s2 Protein, 2019-nCoV; ncov spike Protein, 2019-nCoV; NCP-CoV RBD Protein, 2019- nCoV; NCP-CoV s1 Protein, 2019-nCoV; NCP-CoV s2 Protein, 2019-nCoV; NCP-CoV Spike Protein, 2019-nCoV; novel coronavirus RBD Protein, 2019- nCoV; novel coronavirus s1 Protein, 2019-nCoV; novel coronavirus s2 Protein, 2019-nCoV; novel coronavirus spike Protein, 2019-nCoV; RBD Protein, 2019-nCoV; S1 Protein, 2019-nCoV; S2 Protein, 2019-nCoV; Spike RBD Protein, 2019-nCoV
Protein Construction:	A DNA sequence encoding the SARS-CoV-2 (2019-nCoV) Spike Protein (RBD) was expressed with the Fc region of human IgG1 at the C-terminus.
Source:	2019-nCoV
Expression Host:	HEK293 Cells
QC Testing
Purity:	＞95 % as determined by SDS-PAGE ＞95 % as determined by SEC-HPLC
Bio Activity：	Measured by its binding ability in a functional ELISA. Immobilized human ACE2 protein (His tag) at 2μg/mL (100μL/well) can bind SARS-CoV-2 (2019-nCoV) Spike Protein (RBD, Fc Tag) (40592-V02H), the EC50 of 2019-nCoV Spike Protein (RBD, Fc Tag) is 2-6 ng/mL.
Endotoxin:	＜ 1.0 EU per μg protein as determined by the LAL method.
Predicted N terminal:	Arg 319
Molecular Mass:	The recombinant SARS-CoV-2 (2019-nCoV) Spike Protein (RBD, Fc Tag) consists of 461 amino acids and predicts a molecular mass of 51.8 kDa.
Formulation:	Lyophilized from sterile PBS, pH 7.4. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA. Please contact us for any concerns or special requirements.
Usage Guide
Stability & Storage:	Samples are stable for 12 months from date of receipt at -20℃ to -80℃. Recommend to aliquot the protein into smaller quantities for optimal storage.
Avoid repeated freeze-thaw cycles.
Reconstitution:	Detailed reconstitution instructions are sent along with the products.

SDS-PAGE:

SEC-HPLC:

ELISA Activity:

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