JAM-2/JAM-B Protein, Mouse, Recombinant (hFc Tag)

• Background:

  Junctional adhesion molecule B (JAM-B), also known as Junctional adhesion molecule 2 (JAM2), Vascular endothelial junction-associated molecule (VE-JAM), and CD322, is a single-pass type I membrane protein that belongs to the immunoglobulin superfamily. It is prominently expressed on high endothelial venules. expression to be restricted to the high endothelial venule of tonsil and lymph nodes. The localization to the endothelium of arterioles in and around inflammatory and tumor foci. JAM-B can function as an adhesive ligand for the T cell line J45 and can interact with GM-CSF/IL-4-derived peripheral blood dendritic cells, circulating CD56 (+) NK cells, circulating CD56 (+) CD3 (+) NK/T cells, and circulating CD56 (+) CD3 (+) CD8 (+) cytolytic T cells. JAM-2 is expressed on high endothelial venules (HEVs) in human tonsil and on a subset of human leukocytes, suggesting that JAM-2 plays a central role in the regulation of transendothelial migration. It binds to very late activation antigen (VLA) -4, a leucocyte integrin that contributes to rolling and firm adhesion of lymphocytes to endothelial cells through binding to vascular cell adhesion molecule (VCAM) -1. JAM-B appears to contribute to leukocyte extravasation by facilitating not only transmigration but also rolling and adhesion. JAM-B acts as an adhesive ligand for interacting with a variety of immune cell types and may play a role in lymphocyte homing to secondary lymphoid organs.

• Synonyms:

  1110002N23Rik Protein, Mouse; 2410030G21Rik Protein, Mouse; 2410167M24Rik Protein, Mouse; JAM-2 Protein, Mouse; JAM-B Protein, Mouse; Jcam2 Protein, Mouse; VE-JAM Protein, Mouse

• Gene Name:

  Junctional adhesion molecule 2

• Expression System:

  HEK293 Cells

• Tag:

  C-hFc

• Endotoxin:

  < 1.0 EU per μg of the protein as determined by the LAL method.

• Purity:

  > 70 % as determined by SDS-PAGE.

• Activity:

  Measured by the ability of the immobilized protein to support the adhesion of Jurkat human leukemic T cells. When 8 x 10E4 cells/well are added to JAM2-coated plates (0.2 μg/ml and 100 μl/well), approximately 40-55% will adhere specifically after 60 minutes at 37°C.

• Form:

  Lyophilized

• Buffer:

  Lyophilized from sterile PBS, pH 7.4. Please contact us for any concerns or special requirements. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.

• Function:

  CD Molecule proteins

• Molecular Weight:

  The secreted recombinant mouse JAM-2/Fc is a disulfide-linked homodimeric protein. The reduced monomer comprises 449 amino acids and has a predicted molecular mass of 50.3 kDa. rm JAM-2/Fc monomer migrates as an approximately 65 kDa band in SDS-PAGE under reducing conditions.

• Storage Conditions:

  In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise. Stable for 1 year at -20°C or below from date of shipment. For maximum recovery of product, centrifuge the original vial after thawing and opening the cap. For long-term storage, aliquot and store at -20°C or below. Avoid repeated freeze-thaw cycles.

• Symbol:

  JAM2

• Species:

  Mouse

• Protein ID:

  NP_076333.3

• Overview:

  A DNA sequence encoding the mouse JAM-2 (NP_076333.3) extracellular domain (Met 1-Asn 236) was fused with the Fc region of human IgG1 at the C-terminus.

• AA Sequence:

  Met1-Asn236

• Protein ID Link:

  https://www.ncbi.nlm.nih.gov/protein/NP_076333.3