| Field | Specification |
|---|---|
| Mfr No | |
| Biological Activity | |
| Endotoxin Level | |
| Formulation | |
| Molecular Weight | |
| Product Type | |
| Purity | |
| Reconstitution | |
| Source | SF9 insect cells |
| Storage |
Scientific Background
Herpes Virus Entry Mediator (HVEM) is a transmembrane protein that is the receptor for TNFSF14 (also known as LIGHT) and is therefore referred to asTNFRSF14. HVEM is expressed broadly on immune cells such as T cells, natural killer (NK) cells and monocytes. The interaction of 3 molecules of LIGHT with three molecules of HVEM forms a hexameric complex that leads to the recruitment and retention of effector cells and activates NK cells to produce large amounts of IFN-γ and GM-CSF. In addition to the canonical binding partner LIGHT, HVEM can also bind to the inhibitory signaling protein, B- and T- lymphocyte attenuator (BTLA),which suppresses immune responses.
Product Description
Insect Cells (Sf9) ExpressionRecombinant HVEM-Fc Human protein is produced using a validated Insect Cells (Sf9) expression system and supplied as lyophilized powder for long-term stability. Suitable for use in functional bioassays, ELISA standard curves, receptor binding studies, antibody validation, and related research applications.
Protein Specifications
| Expression System | Insect Cells (Sf9) |
|---|---|
| Molecular Weight | ~45 kDa, observed by reducing SDS-PAGE. |
| Purity | > 95% by SDS-PAGE and HPLC analyses. |
| Endotoxin | < 0.2 EU/μg, determined by LAL method. |
| Physical Form | Sterile Filtered White lyophilized (freeze-dried) powder. |
| Formulation | Lyophilized after extensive dialysis against PBS. |
| Reconstitution | Reconstituted in ddH2 |
| Storage | Lyophilized recombinant human HVEM-Fc (rhHVEM-Fc) remains stable up to 6 months at -80°C from date o… |
Functional Activity
ED50 < 0.1 μg/mL, measured by the neutralization assay using 929 cells in presence of 0.25 ng/mL of human TNF-beta, corresponding to a specific activity of > 1×10ˆ4 units/mg.
Safety & Handling
This material is offered by USA Bioworld biotech for research, laboratory or further evaluation purposes. For research use only.
This protein was produced in Insect Cells (Sf9) expression system. Expression system selection determines glycosylation profile, folding, and post-translational modifications. For cell-based stimulation assays, verify the expression system matches the glycosylation requirements of your target receptor or pathway.
Reconstituted in ddH2
This protein has been validated for functional bioactivity: ED50 < 0.1 μg/mL, measured by the neutralization assay using 929 cells in presence of 0.25 ng/mL of human TNF-beta, corresponding to a specific activity of > 1×10ˆ4 units/mg.. Optimal working concentrations may vary depending on your cell type, assay format, and culture conditions. Titrate the protein in a dose-response experiment to determine the optimal concentration for your system.
Endotoxin level is < 0.2 EU/μg, determined by LAL method. as determined by the LAL method. Low endotoxin is critical for cell-based studies because endotoxin activates NF-κB and TLR4 signalling in immune cells, producing artefactual cytokine induction that can completely mask the true biological activity of the recombinant protein.
Lyophilized recombinant human HVEM-Fc (rhHVEM-Fc) remains stable up to 6 months at -80°C from date of receipt. Upon reconstitution, rhHVEM-Fc remains stable up to 2 weeks at 4°C or up to 3 months at - Upon receipt, immediately store at −80°C. Prepare single-use working aliquots to avoid repeated freeze-thaw cycles. Lyophilized protein is stable for 6–12 months at −80°C from the date of receipt.
BioHippo offers flexible sourcing options for qualified research institutions and partners. The following may be available subject to supplier capabilities and order volume.
- Custom quantities: Bulk pricing or non-standard sizes available for high-throughput screening or scale-up projects.
- Custom formulation: Alternative reconstitution buffers or carrier proteins may be accommodated on request.
- Extended QC data: Additional bioactivity assay data, endotoxin reports, or SEC-HPLC purity profiles available on request.
Contact BioHippo customer support to discuss your requirements.
