Detection of ESAM in HUVEC Human Cells by Flow Cytometry.
HUVEC human umbilical vein endothelial cells were stained with Mouse Anti-Human ESAM Monoclonal Antibody (Catalog # MAB4204, filled histogram) or isotype control antibody (Catalog # MAB0041, open histogram), followed by Phycoerythrin-conjugated Anti-Mouse IgG F(ab')2 Secondary Antibody (Catalog # F0102B).
ESAM in HUVEC Human Cells.
ESAM was detected in immersion fixed HUVEC human umbilical vein endothelial cells using Mouse Anti-Human ESAM Monoclonal Antibody (Catalog # MAB4204) at 10 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (yellow; Catalog # NL007) and counterstained with DAPI (blue). View our protocol for Fluorescent ICC Staining of Cells on Coverslips.
Preparation and Storage
Reconstitute at 0.5 mg/mL in sterile PBS.
Reconstitution Buffer Available
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.
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).
Hirata, K-I. et al. (2001) J. Biol. Chem. 276:16223.
Nasdala, I. et al. (2002) J. Biol. Chem. 277:16294.
Wegmann, F. et al. (2004) Exp. Cell Res. 300:121.
Ishida, T. et. al. (2003) J. Biol. Chem. 278:34598.
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