Recombinant SARS-COV-2 Spike RBD(Omicron XBB) Protein, His Tag
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產(chǎn)品說明書
FAQ
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Coronaviruses are commonly comprised of four structural proteins: Spike protein (S), Envelope protein (E), Membrane protein (M) and Nucleocapsid protein (N) . The SARS-CoV-2 S protein is a glycoprotein that mediates membrane fusion and viral entry. The S protein is homotrimeric, with each ~180-kDa monomer consisting of two subunits, S1 and S2 . The RBD of SARS-CoV-2 binds a metallopeptidase, angiotensin-converting enzyme 2 (ACE-2).
產(chǎn)品信息
|
別名 |
S protein RBD; S glycoprotein RBD; Spike protein RBD |
|
Accession |
QHD43416.1 |
|
表達(dá)區(qū)間及表達(dá)系統(tǒng) |
Recombinant SARS-CoV-2 Spike RBD (Omicron XBB) Protein is expressed from Expi293 with His tag at the C-terminal. It contains Arg319-Phe541(G339H, R346T, L368I, S371F, S373P, S375F, T376A, D405N, R408S, K417N, N440K, V445P, G446S, N460K, S477N, T478K, E484A, F486S, F490S, Q498R, N501Y, Y505H). |
|
分子量 |
Approximately 26.21 kDa. Due to glycosylation, the protein migrates to 35-45 kDa based on Tris-Bis PAGE result. |
|
純度 |
> 95% as determined by SDS-PAGE and HPLC. |
|
活性 |
ELISA Data：Immobilized SARS-CoV-2 Spike RBD (Omicron XBB) at 0.5μg/ml (100μl/well) on the plate. Dose response curve for Human ACE2, hFc Tag with the EC50 of 27.0ng/ml determined by ELISA. |
|
內(nèi)毒素 |
< 1.0 EU per 1μg of the protein by the LAL method. |
|
制劑 |
Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). |
|
復(fù)溶 |
Centrifuge tubes before opening. Reconstituting to a concentration more than 100 μg/mL is recommended (usually we use 1 mg/mL solution for lyophilization). Dissolve the lyophilized protein in distilled water. |
儲存條件
The product should be stored at -25~-15℃.
1 month, 2 ~8 °C under sterile conditions after reconstitution.
3 months, -25~-15℃ °C under sterile conditions after reconstitution.
Recommend to aliquot the protein into smaller quantities when first used and avoid repeated freeze-thaw cycles.
注意事項
1.Please operate with lab coats and disposable gloves，for your safety。
2.This product is for research use only.
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