Recombinant SARS S protein RBD, His Tag (MALS verified), His tag, 100µg

Background
It's been reported that Coronavirus 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.

Source
Recombinant SARS S protein RBD, His Tag (SPD-S52H6) is expressed from human 293 cells (HEK293). It contains AA Arg 306 - Phe 527 (Accession # AAP13567.1).
Predicted N-terminus: Arg 306

Molecular Characterization
This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 26.9 kDa. The protein migrates as 33-40 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

Endotoxin
Less than 1.0 EU per μg by the LAL method.

Purity
>90% as determined by SDS-PAGE.
>90% as determined by SEC-MALS.

Formulation
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.

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.

Bioactivity
Please refer to product data sheet.

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:
-20°C to -70°C for 12 months in lyophilized state;
-70^°C for 3 months under sterile conditions after reconstitution.

Clinical and Translational Updates

(1) "A novel nanobody broadly neutralizes SARS-CoV-2 via induction of spike trimer dimers conformation"
Yang, Zhang, Zhang et al
Exploration (Beijing) (2024) 4 (3), 20230086
(2) "Computational design and investigation of the monomeric spike SARS-CoV-2-ferritin nanocage vaccine stability and interactions"
Garmeh Motlagh, Azimzadeh Irani, Masoomi Nomandan et al
Front Mol Biosci (2024) 11, 1403635
(3) "S2 Peptide-Conjugated SARS-CoV-2 Virus-like Particles Provide Broad Protection against SARS-CoV-2 Variants of Concern"
Heo, Lim, Moon et al
Vaccines (Basel) (2024) 12 (6)
Showing 1-3 of 4635 papers.