Recombinant Human ESAM Fc Chimera Protein, CF

Catalog #: 2688-EC Datasheet / COA / SDS

Catalog #	Availability	Size / Price	Qty
2688-EC-050

R&D Systems Recombinant Proteins and Enzymes

1 Image

Product Details

Supplemental Products

Reviews

Summary Product Datasheets Carrier Free Data Images Reconstitution Calculator Background Related Research Areas

Recombinant Human ESAM Fc Chimera Protein, CF Summary

Product Specifications

Purity

>95%, by SDS-PAGE under reducing conditions and visualized by silver stain

Endotoxin Level

<0.01 EU per 1 μg of the protein by the LAL method.

Activity

Measured by its ability to induce ERK phosphorylation in BaF3 mouse pro‑B cells transfected with human ESAM. Stimulation of 2.5 x 10⁵ serum-starved hESAM transfected BaF3 cells with 25 µg Recombinant Human ESAM Fc Chimera (Catalog # 2688-EC) for 30 minutes at 37° C leads to ERK phosphorylation.

Source

Mouse myeloma cell line, NS0-derived human ESAM protein

Human ESAM (Gln30 - Ala247) Accession # Q96AP7	IEGRMD	Human IgG₁ (Pro100 - Lys330)
N-terminus		C-terminus

Accession #

Q96AP7

N-terminal Sequence
Analysis

No results obtained: Gln30 predicted

Predicted Molecular Mass

50.3 kDa (monomer)

SDS-PAGE

67-75 kDa, reducing conditions

Product Datasheets

2688-EC

Product Datasheet

COA

SDS

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

2688-EC

Formulation	Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution	Reconstitute at 100 μg/mL in sterile PBS.
Shipping	The product is shipped at ambient temperature. Upon receipt, store it 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. 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Reconstitution Calculator

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

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.

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