• Species Reactivity

  Human

• Specificity

  Detects human ESAM in direct ELISAs and Western blots. In direct ELISAs, approximately 5% cross‑reactivity with recombinant mouse ESAM is observed.

• Source

  Polyclonal Goat IgG

• Purification

  Antigen Affinity-purified

• Immunogen

  Mouse myeloma cell line NS0-derived recombinant human ESAM    
  Gln30-Ala247    
  Accession # Q96AP7

• Formulation

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

• Label

  Unconjugated

Applications

• Recommended    
  Concentration

  Sample

• Western Blot

  1 µg/mL

  See below

• 
  

• Flow Cytometry

  2.5 µg/10    ⁶ cells

  See below

• 
  

• Immunohistochemistry

  5-15 µg/mL

  Immersion fixed paraffin-embedded sections of human kidney and liver

• 
  

• 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.  are available in the Technical Information section on our website.

Data Examples

Preparation and Storage

• Reconstitution

  Reconstitute at 0.2 mg/mL in sterile PBS.

• Shipping

  The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C

• 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: ESAM

Endothelial cell-selective adhesion molecule (ESAM) is a 55 kDa type I transmembrane glycoprotein that belongs to the JAM family of immunoglobulin superfamily molecules (1, 2). Human ESAM is synthesized as a 390 amino acid (aa) protein composed of a 29 aa signal peptide, a 216 aa extracellular region, a putative 26 aa transmembrane segment, and a 119 aa cytoplasmic domain. The extracellular region contains one V-type and one C2-type Ig domain and is involved in homophilic adhesion (1). In the cytoplasmic domain, there is a docking site for the multifunctional adaptor protein MAGI-1 (3). The extracellular region of human ESAM shows 90%, 74%, 69% and 67% aa identity with monkey, canine, mouse and rat extracellular ESAM, respectively. ESAM is expressed on endothelial cells, activated platelets and megakaryocytes, and can be found associated with cell-to-cell junctions. Whether ESAM is restricted to a particular junctional type is not clear (1, 2). ESAM deficient mice have no defect in vascularization but do have reduced angiogenic potential. This may be due to a decreased migratory response to FGF-2 (4).

• References:

1. Hirata, K-I, et al. (2001) J. Biol. Chem. 276:16223.

2. Nasdala, I. et al. (2002) J. Biol. Chem. 277:16294.

3. Wegmann, F. et al. (2004) Exp. Cell Res. 300:121.

4. Ishida, T. et. al. (2003) J. Biol. Chem. 278:34598.

• Long Name:

  Endothelial Cell Adhesion Molecule

• Entrez Gene IDs:

  90952 (Human); 69524 (Mouse)

• Alternate Names:

  2310008D05Rik; endothelial cell adhesion molecule; endothelial cell-selective adhesion molecule; ESAM; HUEL (C4orf1)-interacting protein; LP4791 protein; W117m