B7-H4 Protein, Human, Recombinant (His), Biotinylated is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 26.8 kDa and the accession number is Q7Z7D3-1.
Pack Size | Availability | Price/USD | Quantity |
---|---|---|---|
20 μg | 5 days | $ 306.00 | |
100 μg | 5 days | $ 726.00 |
Description | B7-H4 Protein, Human, Recombinant (His), Biotinylated is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 26.8 kDa and the accession number is Q7Z7D3-1. |
Species | Human |
Expression System | HEK293 Cells |
Tag | C-His |
Accession Number | Q7Z7D3-1 |
Synonyms | PRO1291, VCTN1, B7S1, B7h.5, B7-H4, B7X, V-set domain containing T cell activation inhibitor 1, B7H4 |
Construction | The Human VTCN1(Q7Z7D3-1) (Phe29-Ala258) with a C-terminal polyhistidine tag was expressed. The purified protein was biotinylated in vitro. |
Protein Purity | > 95 % as determined by SDS-PAGE. |
Molecular Weight | 26.8 kDa (predicted) |
Endotoxin | < 1.0 EU/μg of the protein as determined by the LAL method. |
Formulation | Lyophilized from a solution filtered through a 0.22 μm filter, containing PBS, pH 7.4. Typically, a mixture containing 5% to 8% trehalose, mannitol, and 0.01% Tween 80 is incorporated as a protective agent before lyophilization. |
Reconstitution | A Certificate of Analysis (CoA) containing reconstitution instructions is included with the products. Please refer to the CoA for detailed information. |
Stability & Storage |
It is recommended to store recombinant proteins at -20°C to -80°C for future use. Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at-80℃. For reconstituted proteinsolutions, the solution can be stored at -20°c to -80'c for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots. |
Shipping |
In general, Lyophilized powders are shipping with blue ice. |
Research Background | V-set domain-containing T-cell activation inhibitor 1, also known as B7X, B7H4, B7S1, and VTCN1, is a single-pass type-III membrane protein belonging to the B7 family of costimulatory proteins. These proteins are expressed on the surface of antigen-presenting cells and interact with ligands on T lymphocytes. They provide costimulatory signals that regulate T cell responses. A soluble form of B7H4 has also been detected. B7X / VTCN1 / B7H4 negatively regulates T-cell-mediated immune response by inhibiting T-cell activation, proliferation, cytokine production and development of cytotoxicity. When expressed on the cell surface of tumor macrophages, B7X / VTCN1 / B7H4 plays an important role, together with regulatory T-cells(Treg), in the suppression of tumor-associated antigen-specific T-cell immunity. B7X / VTCN1 / B7H4 is also involved in promoting epithelial cell transformation. This membrane protein can be up-regulated by IL6 / interleukin-6 and IL10 / interleukin-10 and inhibited by CSF2 / GM-CSF and IL4 / interleukin-4 on antigen-presenting cells.Cancer ImmunotherapyCo-inhibitory Immune Checkpoint TargetsImmune CheckpointImmune Checkpoint Detection: AntibodiesImmune Checkpoint Detection: ELISA AntibodiesImmune Checkpoint Detection: IHC AntibodiesImmune Checkpoint ProteinsImmune Checkpoint TargetsImmunotherapyTargeted Therapy |
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B7-H4 Protein, Human, Recombinant (His), Biotinylated PRO1291 VCTN1 PRO-1291 VCTN-1 B7S1 B7h.5 VCTN 1 B7-H4 B7X V-set domain containing T cell activation inhibitor 1 PRO 1291 B7H4 recombinant recombinant-proteins proteins protein