| Field | Specification |
|---|---|
| Alternative Names | CD252, OX40 Ligand, gp34 |
| Conjugate | |
| Formulation | |
| Host | |
| Product Type | |
| Shipping | |
| Storage |
Scientific Background
Human CD252 (CD134L, OX-40 Ligand) is a type II membrane protein with homology to TNF which is expressed on activated B cells and activated endothelial cells. CD252 binds to CD134 present on activated T cells, providing a costimulatory signal (1). This pathway seems to be more effective for costimulation of CD4+ helper T cells than for CD8+ effector T cells (4). Blockade of this interaction in mouse abrogated immunological effects in several models of immflamation and rejection (5,6,7,8). CD252-muCD8 fusion protein binds to CD134 positive cells in Flow cytometry.
Product Description
CHO CellsRecombinant hCD252(OX40L)-muCD8 is a recombinant human fusion protein produced in CHO Cells cells. Molecular Structure: A soluble molecule consisting of the extracellular domain (167aa) of murine CD8 alpha fused to 132 (c-term) amino acids of the extracellular domain of human CD252, with a predicted (non glycosylated) monomeric weight of 34.1 kd. Extracellular mature murine CD8alpha: (28)KPQAPEL….GLDFACD(194); Linking amino acids: TR; extracellular human CD252: (52)VSHRYPR….NPGEFCVL(183).
Alternative names: CD252, OX40 Ligand, gp34
Protein Specifications
| Fusion Format | Murine CD8α Fusion (muCD8) |
|---|---|
| Expression System | CHO Cells |
| Molecular Weight | 34.1 kDa |
| Formulation | 50 mM Sodium Phosphate pH 7.5, 100 mM Potassium Chloride, 150mM NaCl, 0.5% Gentamicin sulfate |
| Storage | Store at 2 - 5°C. Freeze/Thawing is not recommended. |
| Species Reactivity | Human |
| Validated Applications | ELISA, Flow Cytometry |
| Available Conjugates | Biotin, Unconjugated |
✔ Research Use Only (RUO)
Functional Activity
CD134L-muCD8 fusion protein binds to CD134 positive cells in Flow cytometry.
Safety & Handling
Research Use Only. Not intended for diagnostic, therapeutic, or clinical use. Handle according to good laboratory practice (GLP). Consult the Safety Data Sheet (SDS) prior to use.
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This protein was expressed in CHO Cells cells. Mammalian expression is critical for this Fc fusion protein because it ensures proper glycosylation and tertiary folding of the extracellular immunoglobulin-like domains, preserving native receptor-binding activity.
Recombinant hCD252(OX40L)-muCD8 has been validated for: ELISA, Flow Cytometry. It is produced as a Murine CD8α Fusion (muCD8), making it suitable as a blocking reagent, binding standard, or functional stimulant/inhibitor in immunology assays.
Recommended storage: Store at 2 - 5°C. Freeze/Thawing is not recommended.. Formulation: 50 mM Sodium Phosphate pH 7.5, 100 mM Potassium Chloride, 150mM NaCl, 0.5% Gentamicin sulfate. Avoid repeated freeze-thaw cycles. If long-term storage is needed, aliquot upon first use.
Species reactivity includes: human. Cross-reactivity was confirmed by functional binding assays (e.g., ELISA and/or FACS) against cells or recombinant proteins from the indicated species.
Available formats include: Biotin, Unconjugated. Conjugated forms are ready-to-use without secondary detection reagents for flow cytometry. Unconjugated (purified) forms can be used with anti-Fc secondary antibodies in ELISA.
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- L.M. Higgins, et al, (1999) J Immunol 162: 486-493.
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