Recombinant SARS-CoV-2 S1 Subunit Protein RBD, L452Q/F490S mutant, Biotinylated
Biotin-conjugated recombinant SARS-CoV-2 S1 subunit protein RBD, mutant L452Q/F490S with C-terminal His-tag, derived from the transfected human HEK293 cells.
Product Description
Specifications
| Size | 100 ug, 500 ug, 1000 ug |
|---|---|
| Species | SARS-CoV-2 |
| Accession Number | QHD43416 |
| Gene Symbols | S |
| Protein Name / Synonyms | Spike protein, S Protein, S1 Subunit, Host Cell Receptor Binding Domain (RBD) |
| Expressed Region | Arg319-Phe541. L452Q/F490S mutant: amino acid Leu (L) at 452 position was mutated to Gln (Q), Phe (F) at 490 position was mutated to Ser (S). |
| Expression System | HEK293 cells |
| Conjugation | Biotin |
| Tag | C-terminal his-tag. The primary amino groups (-NH2) at the N-terminus and the side chains of lysine (K) residues were biotin-conjugated using the standard chemical labeling method. |
| Purification | His-tag affinity purification by immobilized metal ion affinity chromatography (IMAC) |
| Purity | >95% |
| Purity Determined By | SDS-PAGE under reducing conditions and visualized by Coomassie blue staining |
| Molecular Weight (kDa) | Recombinant protein product has a calculated molecular mass of ∼25 kDa. Due to the abundant glycosylation, it migrates as approximately ∼30 kDa protein bands in SDS-PAGE under DTT, beta-mercaptoethanol reducing conditions. After deglycosylation under native and denature conditions, the protein presented as one reduced ∼25 kDa band. |
| Format | Liquid |
| Formulation | Supplied as a 0.2 µm filtered solution in PBS (pH 7.4) |
| Concentration (lot specific) | Lot specific (see the label on the vial), determined by BCA protein assay |
| Specificity | SARS-CoV-2 Lambda Variant C.37 (Peru) |
| Endotoxin Level | < 0.5 EU per µg of the protein as determined by the LAL method |
| Protein Type | Recombinant Protein |
| Estimated Lead Time | 2-3 business days |
| Shipping Type | Blue ice |
| Storage | -20°C |
