Human B7-H4 Protein, Fc Tag, low endotoxin

V-set domain-containing T-cell activation inhibitor 1 (VTCN1) is also known as Immune costimulatory protein B7-H4, Protein B7S1, T-cell costimulatory molecule B7x, B7H4, which belongs to the immunoglobulin superfamily and BTN/MOG family. VTCN1 contains two Ig-like V-type (immunoglobulin-like) domains. The expression of VTCN1 is up-regulated by IL6 and IL10 and is inhibited by GM-CSF and IL4 on antigen-presenting cells (APCs) . VTCN1 / B7-H4 negatively regulates T-cell-mediated immune response by inhibiting T-cell activation, proliferation, cytokine production and development of cytotoxicity. VTCN1 involved in promoting epithelial cell transformation.

Product Specifications

Background

Specifications

This protein carries a human IgG1 Fc tag at the C-terminus. The protein has a calculated MW of 51.8 kDa. The protein migrates as 66-85 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

Accession Number

Q7Z7D3-1

Expression Region

Phe 29 - Ala 258

Host

HEK293

Target

B7-H4

Conjugation

Unconjugated

Tag

C-Fc

Source

Human

Stability

-20°C to -70°C for 12 months in lyophilized state; -70°C for 3 months under sterile conditions after reconstitution. For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Endotoxin

0.01 EU per μg

Purity

95%

Bioactivity

Immobilized Human B7-H4 Protein, Fc Tag (Cat. No. B74-H5256) at 0.5 μg/mL (100 μL/well) can bind Anti-B7-H4 MAb (Human IgG1) with a linear range of 0.2-8 ng/mL (QC tested).