Recombinant Human VISTA/B7-H5/PD-1H Fc Chimera Protein, CF

Catalog # Availability Size / Price Qty
7126-B7-050
7126-B7-01M
Recombinant Human VISTA/B7-H5/PD-1H  Fc Chimera Protein, CF Bioactivity
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Product Details
Citations (1)
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Recombinant Human VISTA/B7-H5/PD-1H Fc Chimera Protein, CF Summary

Purity
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Level
<0.01 EU per 1 μg of the protein by the LAL method.
Activity
Measured by its ability to inhibit anti-CD3 antibody induced IL-2 secretion in human T lymphocytes. The ED50 for this effect is 1-6 μg/mL.
Source
Mouse myeloma cell line, NS0-derived human VISTA/B7-H5/PD-1H protein
Human VISTA/B7-H5/PD-1H
(Phe33-Ala194)
Accession # AAH20568
IEGRMD Human IgG1
(Pro100-Lys330)
N-terminus C-terminus
Accession #
N-terminal Sequence
Analysis
Phe33
Structure / Form
Disufide-linked homodimer
Predicted Molecular Mass
44.8 kDa (monomer)
SDS-PAGE
64-75 kDa, reducing conditions

Product Datasheets

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

7126-B7

Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 200 μg/mL in PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Data Image

Bioactivity Bioactivity View Larger

Recombinant Human VISTA/B7-H5/PD-1H Fc Chimera (Catalog #7126-B7) inhibits anti-CD3 antibody induced IL-2secretion in human T lymphocytes. The ED50 for this effect is 1-6μg/mL.

Reconstitution Calculator

Reconstitution Calculator

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Background: VISTA/B7-H5/PD-1H

Platelet receptor Gi24, also known as Dies1, VISTA, SISP1 and B7‑H5, is a 55‑65 kDa transmembrane glycoprotein with homology to B7‑like immune co‑stimulatory molecules (1, 2). Mature human Gi24 contains a 162 amino acid (aa) extracellular domain (ECD) with one V‑type Ig‑like domain, a 21 aa transmembrane segment, and a 96 aa cytoplasmic domain. Within the ECD, human Gi24 shares 70% and 67% aa sequence identity with mouse and rat Gi24, respectively (3). The 30 kDa ECD can be shed by MT1‑MMP, with a 25‑30 kDa fragment remaining in the membrane (3). Gi24 promotes both MT1‑MMP expression and the MT1‑MMP mediated activation of MMP‑2 (3). Gi24 supports the differentiation of embryonic stem cells (ESC) and enhances BMP‑4 induced signaling in ESC, but is also down‑regulated following BMP‑4 exposure (4, 5). It binds to BMP‑4 directly, and also associates with the type I BMP receptor Activin RIB/ALK‑4 (4, 5). Gi24 is expressed on the surface of naïve CD4+ T cells and regulatory T cells (6). It is up‑regulated in vivo on activated monocytes and dendritic cells (5). Gi24 inhibits CD4+ and CD8+ T cell proliferation, and their production of IL‑2 and IFN‑ gamma (6). Its expression on tumor cells attenuates the anti‑tumor immune response and enables more rapid tumor progression (6). In contrast, Gi24 limits disease progression in the autoimmune disease model EAE (6).

References
  1. Flajnik, M.F. et al. (2012) Immunogenetics 64:571.
  2. Wilcox, R.A. et al. (2012) Eur. J. Haematol. 88:465.
  3. Sakr, M.A. et al. (2010) Cancer Sci. 101:2368.
  4. Aloia, L. et al. (2010) J. Biol. Chem. 285:7776.
  5. Parisi, S. et al. (2012) FASEB J. 26:3957.
  6. Wang, L. et al. (2011) J. Exp. Med. 208:577.
Entrez Gene IDs
64115 (Human); 74048 (Mouse); 690899 (Rat); 102116468 (Cynomolgus Monkey)
Alternate Names
4632428N05Rik; B7H5; B7-H5; C10orf54; chromosome 10 open reading frame 54; Dies1; Gi24; PD1H; PD-1H; platelet receptor Gi24; PP2135; SISP1; stress induced secreted protein 1; VISTA; VSIR

Citation for Recombinant Human VISTA/B7-H5/PD-1H Fc Chimera Protein, CF

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

1 Citation: Showing 1 - 1

  1. VSIG-3 as a ligand of VISTA inhibits human T-cell function.
    Authors: Wang J, Wu G, Manick B, Hernandez V, Renelt M, Erickson C, Guan J, Singh R, Rollins S, Solorz A, Bi M, Li J, Grabowski D, Dirkx J, Tracy C, Stuart T, Ellinghuysen C, Desmond D, Foster C, Kalabokis V
    Immunology, 0;156(1):74-85.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay

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Recombinant Human VISTA/B7-H5/PD-1H Fc Chimera Protein, CF
By Anonymous on 01/21/2016
Application: In vitro bioactivity in cell culture