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Recombinant Cynomolgus VISTA/B7-H5/PD-1H His-tag Protein, CF

Catalog # 10473-B7 | R&D Systems, Inc. a Bio-Techne Brand
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10473-B7-100

Key Product Details

Source

HEK293

Accession #

Conjugate

Unconjugated

Applications

Bioactivity

Product Specifications

Source

Human embryonic kidney cell, HEK293-derived cynomolgus monkey VISTA/B7-H5/PD-1H protein
Phe33-Ala194, with a C-terminal 6-His tag

Purity

>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.

Endotoxin Level

<0.10 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Phe33

Predicted Molecular Mass

20 kDa

SDS-PAGE

35-45 kDa, under reducing conditions

Activity

Measured by its binding ability in a functional ELISA.
When Recombinant Human VSIG3 Fc Chimera (Catalog # 9229-VS) is represent at 0.5 µg/mL (100 µL/well), the concentration of Recombinant Cynomolgus Monkey VISTA/B7-H5/PD-1H His-tag (Catalog # 10473-B7) that produces a 50% optimal binding response is found to be 75-375 ng/mL.

Scientific Data Images for Recombinant Cynomolgus VISTA/B7-H5/PD-1H His-tag Protein, CF

Recombinant Cynomolgus VISTA/B7-H5/PD-1H His-tag Protein Binding Activity

Recombinant Cynomolgus VISTA/B7-H5/PD-1H His-tag Protein Binding Activity

When Recombinant Human VSIG3 Fc Chimera (Catalog # 9229-VS) is present at 0.5 µg/mL (100 µL/well), the concentration of Recombinant Cynomolgus Monkey VISTA/B7-H5/PD1-H His-tag (Catalog # 10473-B7) that produces a 50% optimal binding response is found to be 75-375 ng/mL.
Recombinant Cynomolgus VISTA/B7-H5/PD-1H His-tag Protein SDS-PAGE

Recombinant Cynomolgus VISTA/B7-H5/PD-1H His-tag Protein SDS-PAGE

2 μg/lane of Recombinant Cynomolgus Monkey VISTA/B7-H5/PD-1H His-tag Protein (Catalog # 10473-B7) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 35-45 kDa.

Formulation, Preparation and Storage

10473-B7
Formulation Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.
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.

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

V-type immunoglobulin domain-containing suppressor of T-cell activation (VISTA), also known as B7-H5, Platelet receptor Gi24, and SISP1, is a transmembrane glycoprotein with homology to B7 family of immune co‑stimulatory molecules (1, 2). Mature cynomolgus VISTA consists of an extracellular domain (ECD) with one V‑type Ig‑like domain, a transmembrane segment, and a cytoplasmic domain containing a Src homology 2 (SH2)-binding motif and three C-terminal SH3-binding regions (3). Within the ECD, cynomolgus VISTA shares 96% and 69% amino acid sequence identity with human and mouse VISTA, respectively. In human, the ECD can be shed by MT1‑MMP, leaving behind a fragment in the membrane (4). VISTA promotes both MT1‑MMP expression and the MT1‑MMP mediated activation of MMP2 (4). VISTA supports the differentiation of embryonic stem cells (ESC) and enhances BMP4 induced signaling in ESC but is also down‑regulated following BMP4 exposure (5, 6). VISTA can bind to BMP4 directly and is also capable of associating with the type I BMP receptor Activin RIB/ALK4 (5, 6). VISTA is expressed on the surface of naïve CD4+ T cells and regulatory T cells and functions as an immune checkpoint protein involved in the regulation of T cell activity (3, 7, 8). VISTA is up‑regulated in vivo on activated monocytes and dendritic cells and its overexpression results in reduced CD4+ and CD8+ T cell activation and proliferation and decreased IL2 and IFN-gamma production (6, 7). VISTA expression on tumor cells attenuates the anti‑tumor immune response and enables more rapid tumor progression (7). In contrast, VISTA limits disease progression in the autoimmune disease model EAE (7). VISTA has recently shown to interact with VSIG3 and PSGL1 (9, 10).

References

  1. Flajnik, M.F. et al. (2012) Immunogenetics 64:571.
  2. Wilcox, R.A. et al. (2012) Eur. J. Haematol. 88:465.
  3. Nowak EC et al. (2017) Immunol Rev. 276:66.
  4. Sakr, M.A. et al. (2010) Cancer Sci. 101:2368.
  5. Aloia, L. et al. (2010) J. Biol. Chem. 285:7776.
  6. Parisi, S. et al. (2012) FASEB J. 26:3957.
  7. Wang, L. et al. (2011) J. Exp. Med. 208:577.
  8. Mehta N et al. (2019) Cell Rep. 28:2509
  9. Wang J. et al. (2019) Immunology, 156:74.
  10. Johnston R.J. et al. (2019) Nature 574:565.

Alternate Names

4632428N05Rik, B7-H5, C10orf54, Dies1, Gi24, PD-1H, PD1H, SISP1, VSIR

Entrez Gene IDs

64115 (Human); 74048 (Mouse); 690899 (Rat); 102116468 (Cynomolgus Monkey)

Gene Symbol

VSIR

UniProt

Additional VISTA/B7-H5/PD-1H Products

Product Documents for Recombinant Cynomolgus VISTA/B7-H5/PD-1H His-tag Protein, CF

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Recombinant Cynomolgus VISTA/B7-H5/PD-1H His-tag Protein, CF

For research use only

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