Recombinant Human B7-H4/VTCN1 Protein (aa 29-258, His Tag)

Abbreviation: B7-H4;VTCN1

Target Synonym: B7S1;B7x;Vtcn1;B7h.5;B7-H4;B7H4T-cell costimulatory molecule B7x;B7S1VCTN1;B7XPRO1291;FLJ22418;Immune costimulatory protein B7-H4;Protein B7S1;T cell costimulatory molecule B7x;V-set domain containing T cell activation inhibitor 1;V-set domain-containing T-cell activation inhibitor 1

Target Species: Human

Expression Host: HEK293 Cells

Fusion Tag: C-His

UNIProt ID: Q7Z7D3

Background: V-set domain-containing T-cell activation inhibitor 1; also known as B7X; B7H4; B7S1; and VTCN1; is a single-pass type? 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.

Sequence: Phe29-Ala258

Purity: > 95 % as determined by reducing SDS-PAGE.

Formulation: Lyophilized from sterile PBS, pH 7.4.
Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization.
Please refer to the specific buffer information in the printed manual.

Endotoxin: < 1.0 EU per ug of the protein as determined by the LAL method.

• SKU: ELSPDMH100005-20
• Manufacturer: Elabscience Biotechnology
• Manufacturer SKU: ELA-PDMH100005-20
• Green Labware: No
• Package Unit: 20 µg
• Quantity Unit: STK