Human JAM-B/VE-JAM Antibody

Catalog #: MAB10742 Datasheet / COA / SDS

Catalog #	Availability	Size / Price	Qty
MAB10742-100
MAB10742-SP

Detection of JAM-B in HEK293 Human Cell Line Transfected with JAM-B and eGFP by Flow Cytometry.

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All JAM-B/VE-JAM Antibodies

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Summary Data Examples Preparation and Storage Reconstitution Calculator Background Product Datasheets Related Research Areas

Human JAM-B/VE-JAM Antibody Summary

Species Reactivity

Human

Specificity

Detects human JAM-B/VE-JAM in direct ELISAs.

Source

Monoclonal Mouse IgG_2B Clone # 988901

Purification

Protein A or G purified from hybridoma culture supernatant

Immunogen

Mouse myeloma cell line NS0-derived recombinant human JAM‑B/VE‑JAM
Phe29-Asn236
Accession # P57087

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Label

Unconjugated

Applications

Recommended Concentration

Sample

Flow Cytometry

0.25 µg/10⁶ cells

See below

CyTOF-ready

Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Flow Cytometry

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Detection of JAM-B in HEK293 Human Cell Line Transfected with JAM-B and eGFP by Flow Cytometry. HEK293 human embryonic kidney cell line transfected with either (A) human JAM-B or (B) irrelevant transfectants and eGFP was stained with Mouse Anti-Human JAM-B Monoclonal Antibody (Catalog # MAB10742) followed by APC-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # F0101B). Quadrant markers were set based on control antibody staining (Catalog # MAB0041). View our protocol for Staining Membrane-associated Proteins.

Reconstitution Calculator

Preparation and Storage

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store 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.
6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: JAM-B/VE-JAM

The family of juctional adhesion molecules (JAM), comprising 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. JAM-B, alternatively named vascular endothelial JAM (VE-JAM), is expressed prominently on high endothelial venules of lymphoid organs where it is localized to the intercellular boundaries of high endothelial cells. It is also expressed on the endothelium of a variety of non-lymphoid organs, especially the heart and placenta (3, 5). Human JAM-B cDNA predicts a 298 amino acid (aa) precursor protein with a putative 28 aa signal peptide, a 209 aa extracellular region containing two Ig domains, a 23 aa transmembrane domain and a 38 aa cytoplasmic domain containing a PDZ-binding motif and a PKC phosphorylation site. Human JAM-B shares approximately 79% aa sequence homology with its mouse homologue. It also shares approximately 35% aa sequence homology with human JAM-A or JAM-C. JAM-B exhibits homotypic interactions, as well as heterotypic interactions with JAM-C, but not JAM-A (4, 5, 7). It is also a ligand for the Integrin alpha ₄ beta ₁. However, the JAM-B/ alpha ₄ beta ₁ interaction is facilitated only after prior adhesion of JAM-B to JAM-C (6). Through its heterotypic interactions with JAM-C, JAM-B is an adhesive ligand for T, NK, and dendritic cells, and may play a role in regulating leukocyte transmigration (5).

The nomenclature used for the JAM family proteins is confusing. VE-JAM has been referred in the literature variously as JAM-B or JAM-3. Until further clarification, R&D Systems has adopted the nomenclature where both mouse and human VE-JAM are referred to as JAM-B.

References

Chavakis, T. et al. (2003) Thromb. Haemost. 89:13.
Aurand-Lions, M. et al. (2001) Blood 98:3699.
Palmeri, A. et al. (2000) J. Biol. Chem. 275:19139.
Cunnigham, S. et al. (2000) J. Biol. Chem. 275:34750.
Liang, T. et al. (2002) J. Immunol. 168:1618.
Cunningham, A. et al. (2002) J Biol. Chem. 277:27589.
Arrate, M. et al. (2001) J. Biol. Chem. 276:45826.

Long Name

Junctional Adhesion Molecule B

Entrez Gene IDs

58494 (Human); 67374 (Mouse)

Alternate Names

C21orf43; CD322 antigen; CD322; JAM2; JAMB; JAM-B; JAM-BJAM-IT/VE-JAM; junctional adhesion molecule 2JAM-2; junctional adhesion molecule B; PRO245; Vascular endothelial junction-associated molecule; VE-JAM; VE-JAMVEJAMCD322