Recombinant Human VSIG3 Fc Chimera Protein, CF

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Recombinant Human VSIG3 Fc Chimera Protein, CF Bioactivity
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Recombinant Human VSIG3 Fc Chimera Protein, CF Summary

>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.
Measured by its ability to inhibit anti-CD3 antibody induced IL-17 secretion by human peripheral blood mononuclear cells (PBMC). The ED50 for this effect is 1-6 μg/mL.
Mouse myeloma cell line, NS0-derived human VSIG3 protein
Human VSIG3
Accession # BAC07546
N-terminus C-terminus
Accession #
N-terminal Sequence
Structure / Form
Disulfide-linked homodimer
Predicted Molecular Mass
50 kDa
56-69 kDa, reducing conditions

Product Datasheets


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.

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Bioactivity Recombinant Human VSIG3 Fc Chimera Protein, CF Bioactivity View Larger

Recombinant Human VSIG3 Fc Chimera (Catalog # 9229-VS)inhibits anti-CD3 antibody induced IL-17 secretion in human PBMC. TheED50 for this effect is 1-6 μg/mL.

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Background: VSIG3

VSIG3, also known as IGSF11, BT-IgSF, and CLMP, is an approximately 50 kDa transmembrane adhesion protein (1). Mature human VSIG3 consists of a 219 amino acid (aa) extracellular domain (ECD) that contains two tandem Ig-like domains, a 21 aa transmembrane segment, and a 169 aa cytoplasmic domain (2). Within the ECD, human VSIG3 shares 95% aa sequence identity with mouse and rat VSIG3. Alternative splicing generates additional isoforms with a substituted signal peptide that may also have a deletion in the second Ig-like domain (3). VSIG3 is expressed on epithelial and endothelial cells, neurons and glial cells, and platelets (2-4). It localizes to epithelial tight junctions and mediates homophilic in trans cell adhesion (3-5). VSIG3 also localizes to neuronal postsynaptic densisties where it recruits the GluA1 and GluA2 subunits of AMPA receptors and supports excitatory synaptic transmission (6). The short isoform can be up-regulated in gastric cancer (7). In zebrafish, VSIG3 is expressed in melanophores and their precursors and plays a role in the development and patterning of pigment cells (8).

  1. Schreiber, J. et al. (2014) Adv. Neurobiol. 8:21.
  2. Suzu, S. et al. (2002) Biochem. Biophys. Res. Commun. 296:1215.
  3. Katoh, M. and M. Katoh (2003) Int. J. Oncol. 23:525.
  4. Raschperger, E. et al. (2004) J. Biol. Chem. 279:796.
  5. Harada, H. et al. (2005) J. Cell. Physiol. 204:919.
  6. Jang, S. et al. (2016) Nat. Neurosci. 19:84.
  7. Watanabe, T. et al. (2005) Cancer Sci. 96:498.
  8. Eom, D.S. et al. (2012) PLoS Genet. 8:e1002899.
Long Name
V-Set and Immunoglobulin Domain Containing 3
Entrez Gene IDs
152404 (Human); 207683 (Mouse); 303926 (Rat); 102146257 (Cynomolgus Monkey)
Alternate Names
Brain and testis-specific immunoglobulin superfamily protein; BTIGSF; BT-IgSF; cancer/testis antigen 119; CT119; CXADR like 1; CXADRL1; IGSF11; Igsf13; immunoglobulin superfamily member 11; immunoglobulin superfamily, member 11; MGC35227; V-set and immunoglobulin domain containing 3; V-set and immunoglobulin domain-containing protein 3; VSIG3; VSIG3brain and testis-specific immunoglobin superfamily protein


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Recombinant Human VSIG3 Fc Chimera Protein, CF
By Anonymous on 05/22/2018
Application: Binding assay/Protein-protein interaction

0.5 ug VSIG3-hIgG1 (IGSF11) or hIgG1 were added to cells expressing hVISTA or a negative control. Binding was assessed using an anti-human 488 secondary antibody.