JAM-A Antibody (M.Ab.F11)



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JAM-A Antibody (M.Ab.F11) Summary

The antibody reacts with the JAM-1 antigen.
Junctional adhesion molecule-1 (JAM-1) also known as the human platelet F11-Receptor (F11R) is a cell adhesion molecule (CAM). JAM-1 is a member of the immunoglobulin superfamily found on the surface of human platelets and at intercellular junctions of endothelial cells and epithelial cells. JAM-1 belongs together with JAM-2 and JAM-3 to a family of adhesion proteins with a V-C2 immunoglobulin domain organization. JAM plays an important role in tight junctions where it is involved in cell-to-cell adhesion through homophilic interaction. It codistributes with other tight junction components as ZO-1, 7H6 antigen, cingulin and occludin. JAM-1 plays a role in platelet aggregation, secretion, adhesion, spreading. In the platelet F11R/Jam-1 is a membrane protein involved in 2 distinct processes initiated on the platelet surface. Antibody-induced platelet aggregation and secretion both dependent on FcgammaRII and GPIIb/IIIa integrin, a process that may be involved in pathophysiological processes associated with certain thrombocytopenias. Antibody mediated platelet adhesion independent from FcgammaRII or fibrinogen receptor and that appears to play a role in physiological processes associated with platelet adhesion and aggregation. A physiological role for the F11R/Jam-1 protein was demonstrated by its phosphorylation after the stimulation of platelets by thrombin and collagen. A pathophysiological role for the F11R/Jam-1 was revealed by demonstrating the presence of F11R/Jam-1 antibodies in patients with thrombocytopenia. Adhesion of platelets through the F11R resulted in events characteristic of the action of cell adhesion molecules (CAMs). Recent data suggests a role for F11R/Jam-1 in the adhesion of platelets to cytokine-inflamed endothelial cells and thus in thrombosis and atherosclerosis induced in non-denuded blood vessels by inflammatory processes.
Protein A or G purified
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Packaging, Storage & Formulations

Store at 4C. Do not freeze.
PBS, containing 0.1% bovine serum albumin.
No Preservative
Please see the vial label for concentration. If unlisted please contact technical services.
Protein A or G purified


Application Notes
The antibody can be used for flow cytometry, Western blotting and immuno precipitation. Furthermore the antibody is useful for functional studies. The antibody directly stimulates the aggregation and granule secretion of human platelets.For flow cytometry and Western blotting dilutions to be used depend on detection system applied. It is recommended that users test the reagent and determine their own optimal dilutions. The typical starting working dilution is 1:10.

Reactivity Notes



Junctional Adhesion Molecules (JAMs) are components and regulators of the well-characterized epithelial and endothelial tight junction. JAM is selectively concentrated at intercellular junctions of endothelial and epithelial cells of different origins. Microscopy shows that JAM codistributes with tight junction components at the apical region of the intercellular cleft. A mAb directed to JAM (BV11) was found to inhibit spontaneous and chemokine-induced monocyte transmigration through an endothelial cell monolayer in vitro. Systemic treatment of mice with BV11 mAb blocked monocyte infiltration upon chemokine administration in subcutaneous air pouches (1). The human protein shares a highly conserved structure and sequence with the murine protein. However it is distinct in that it is constitutively expressed on circulating neutrophils, monocytes, platelets and lymphocyte subsets (2).


This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Gene Symbol F11R

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