Recombinant Mouse JAM-C Fc Chimera Protein, CF

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Product Details

Summary
Reactivity MuSpecies Glossary
Applications Bioactivity
Format
Carrier-Free

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Recombinant Mouse JAM-C Fc Chimera Protein, CF Summary

Details of Functionality
Measured by its ability to inhibit the adhesion of J45.01 human acute lymphoblastic leukemia T lymphocytes on immobilized JAM-2 (VE-JAM)/Fc Chimera. The ED50 for this effect is 0.1-0.5 µg/mL in the presence of 1 x 105 cells/well. Each well was coated with 100 µL of a 0.2 µg/mL solution of rhJAM-2 (VE-JAM)/Fc Chimera.
Source
Mouse myeloma cell line, NS0-derived mouse JAM-C protein
Mouse JAM-C
(Val32 - Asn241)
Accession # Q9D8B7
IEGRMD Human IgG1
(Pro100 - Lys330)
N-terminus C-terminus
Accession #
N-terminal Sequence
Val32
Structure / Form
Disulfide-linked homodimer
Protein/Peptide Type
Recombinant Proteins
Gene
Jam3
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Theoretical MW
50 kDa (monomer).
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
64 kDa, reducing conditions
Publications
Read Publications using
1213-J3 in the following applications:

Packaging, Storage & Formulations

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.
Buffer
Lyophilized from a 0.2 μm filtered solution in Tris-Citrate and NaCl.
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Reconstitution Instructions
Reconstitute at 100 μg/mL in sterile PBS.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Mouse JAM-C Fc Chimera Protein, CF

  • CD323
  • JAM-2
  • JAM3
  • JAMC
  • JAM-C
  • JAM-CFLJ14529
  • junctional adhesion molecule 3JAM-3
  • junctional adhesion molecule C

Background

The family of junctional adhesion molecules (JAM), comprised of at least three members, are type I transmembrane receptors belonging to the immunoglobulin (Ig) superfamily (1, 2). These proteins are localized in the tight junctions between endothelial cells or epithelial cells. Some family members are also found on blood leukocytes and platelets. Mouse JAM-C cDNA predicts a 310 amino acid (aa) residue  precursor protein with a putative 31 aa signal peptide, a 210 aa extracellular region containing two Ig domains, an 18 aa transmembrane domain and a 51 aa cytoplasmic domain containing a PDZ-binding motif and a PKC phosphorylation site (3). Mouse JAM-C shares 86% aa sequence identity with its human homologue. It also shares approximately 31% and 35% aa sequence homology with mouse JAM-A and JAM-B, respectively (2). Mouse JAM-C is highly expressed during embryogenesis. In adult tissues, mouse JAM-C is restricted to endothelial cells, lymph endothelial cells in the kidney, lymph node and Peyer’s patches where the protein can be localized to the high endothelial venules (3). Although human JAM-C is expressed on human platelets and a subset of leukocytes, mouse JAM-C expression was not detected on any mouse lymphocytes (4). In contrast to human JAM-C which show weak homotypic interactions, mouse JAM-C was reported to exhibit homotypic interactions (3). Mouse JAM-C has also been shown to have heterotypic interaction with JAM-B. It is likely that mouse JAM-C may play a role in lymphocyte transendothelial migration (4).

The nomenclature used for the JAM family proteins is confusing. VE-JAM has been referred to in the literature variously as JAM-B or JAM-C. Until further clarification, R&D Systems has adopted the nomenclature where both mouse and human VE-JAM are referred to as JAM-B.

  1. Chavakis, T. et al. (2003) Thromb. Haemost. 89:13.
  2. Aurrand-Lions, M. et al. (2001) Blood 98:3699.
  3. Aurrand-Lions, M. et al. (2001) J. Biol. Chem. 276:2733.
  4. Johnson-Leger, C. et al. (2002) Blood 100:25793.

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Publications for JAM-C (1213-J3)(3)

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Bioinformatics

Gene Symbol Jam3
Uniprot