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| Product Name | Recombinant SARS-CoV-2 Spike Glycoprotein RBD (S), N501Y Variant, Partial, Active |
| Catalog No. | PTR-HMM-0191 |
| Description | A mammalian-cell-derived SARS-CoV-2 receptor-binding domain carrying the N501Y substitution. The construct spans residues 319-541 and includes a C-terminal 10xHis tag. |
| Intended Use | Suitable for functional ELISA, ACE2-binding studies, and SARS-CoV-2 N501Y variant research. |
| Principle / Technology | A defined recombinant protein region is expressed and purified, then its structural quality and biological function are evaluated using the listed biochemical binding or activity assays. |
| Detection Method | SDS-PAGE; functional ELISA; LAL assay |
| Sample Type | Purified recombinant protein |
| Performance Range / Specifications | Purity: >=90% as determined by SDS-PAGE. Molecular weight: 27.9 kDa. Package sizes: 10 ug; 20 ug; 50 ug; 100 ug; 200 ug; 500 ug; 1 mg. |
| Sensitivity / LOD | In a functional ELISA, immobilized N501Y Spike RBD at 2 ug/mL bound human ACE2 with an EC50 of 12.95-17.87 ng/mL. |
| Specificity | Binding activity was demonstrated with human ACE2. |
| Reaction Conditions / Protocol | In a functional ELISA, immobilized N501Y Spike RBD at 2 ug/mL bound human ACE2 with an EC50 of 12.95-17.87 ng/mL. |
| Components / Formulation | 20 mM Tris-HCl, 0.5 M NaCl, 6% trehalose, pH 8.0 |
| Storage Conditions | Store at -20 C or -80 C upon receipt. Aliquot before repeated use and avoid repeated freeze-thaw cycles. |
| Shelf Life | Typical stability is 6 months for liquid material and 12 months for lyophilized material when stored at -20 C or -80 C. |
| Package Specifications | 10 ug; 20 ug; 50 ug; 100 ug; 200 ug; 500 ug; 1 mg |
| Product Form | Lyophilized powder |
| Quality Control | Purity evaluated by SDS-PAGE; endotoxin tested by LAL assay; biological activity verified by functional ELISA. |
| Key Features | Active recombinant protein; 319-541 aa (N501Y); C-terminal 10xHis tag; Mammalian cell. |
| Purity | >=90% as determined by SDS-PAGE. |
| Activity / Unit Definition | In a functional ELISA, immobilized N501Y Spike RBD at 2 ug/mL bound human ACE2 with an EC50 of 12.95-17.87 ng/mL. |
| Molecular Weight | 27.9 kDa |
| Source / Origin | SARS-CoV-2 protein produced in Mammalian cell. |
| pH Range / Optimal pH | pH 8.0 |
| Expiration Date / Stability | Typical stability is 6 months for liquid material and 12 months for lyophilized material when stored at -20 C or -80 C. |
| Regulatory / Compliance | For research use only; not for clinical diagnosis or treatment. |
| Compatibility | Suitable for functional ELISA, ACE2-binding studies, and SARS-CoV-2 N501Y variant research. |
| Recommended Buffer System | 20 mM Tris-HCl, 0.5 M NaCl, 6% trehalose, pH 8.0 |
| Application Notes / Precautions | Briefly centrifuge the vial before opening. Reconstitute with sterile deionized water to 0.1-1.0 mg/mL. For long-term storage, add 5-50% glycerol as appropriate, divide into aliquots, and freeze. Avoid repeated freezing and thawing. A working aliquot may be kept at 4 C for up to one week. |
| Genotype | N501Y |
| Alternative Names / Synonyms | S; Spike glycoprotein; S glycoprotein; E2; Peplomer protein |
| Lead Time | 3-7 business days |
| Availability Status | In Stock |
| Host Species | SARS-CoV-2 |
| Tag Information | C-terminal 10xHis tag |
| Amino Acid Sequence | RVQPTESIVRFPNITNLCPFGEVFNATRFASVYAWNRKRISNCVADYSVLYNSASFSTFKCYGVSPTKLNDLCFTNVYADSFVIRGDEVRQIAPGQTGKIADYNYKLPDDFTGCVIAWNSNNLDSKVGGNYNYLYRLFRKSNLKPFERDISTEIYQAGSTPCNGVEGFNCYFPLQSYGFQPTYGVGYQPYRVVVLSFELLHAPATVCGPKKSTNLVKNKCVNF |
| UniProt Accession | P0DTC2 |
| Protein Length | 223 aa |
| Expression Region | 319-541 aa (N501Y) |
| Endotoxin Level | <1.0 EU/ug as determined by the LAL method. |
For research use only, not for clinical use.
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