Biotin-conjugated recombinant SARS-CoV-2 spike S1 subunit protein, Y145H/A222V mutant, with C-terminal His-tag, derived from the transfected human HEK293 cells.
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Product Description
Specifications
| Size | 10 µg |
| Estimated Lead Time | 2-3 business days |
| Species | SARS-CoV-2 |
| Specificity | SARS-CoV-2 Delta B.1.617.2 (India) |
| Accession Number | QHD43416 |
| Gene Symbols | S |
| Protein Name / Synonyms | Spike protein, S Protein, S1 Subunit, Host Cell Receptor Binding Domain (RBD) |
| Expressed Region | Val16-Gln690. Y145H/A222V mutant: amino acid Tyr (Y) at 145 position was mutated to His (H), Ala (A) at 222 position was mutated to Val (V). |
| 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. |
| Purity | 0.8 |
| 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 ∼75 kDa. Due to the abundant glycosylation, it migrates as approximately ∼120 kDa major protein band in SDS-PAGE under DTT, beta-mercaptoethanol reducing conditions. |
| 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 |
| Endotoxin Level | < 0.5 EU per µg of the protein as determined by the LAL method |
| Research Area | Infectious Disease, COVID-19 |
| Protein Type | Recombinant Protein |
| Shipping Type | Blue ice |
| Storage | -20°C |
SDS-PAGE Image
Stability & Storage
Storage/Stability
Upon arrival, the protein may be stored for 2 weeks at 4°C. For long term storage, it is recommended to store at -20°C or -80°C in appropriate aliquots. Avoid repeated freeze-thaw cycles.