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Recombinant human EPHB4 Protein, 1mg  

Recombinant human EPHB4 Protein, 1mg

Recombinant Human EPH Receptor B4 / EPHB4 Protein (rhEPHB4) Glu17-Ala539 was produced in human 293 cells (HEK293), His Tag

recombinant, human, protein EphB4, HTK, MYK1, TYRO11, Ephrin-type-B-receptor-4

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1 180,00 €

Ephrin type-B receptor 4(EPHB4) is also known as HTK, MYK1 and TYRO11,is a member of Eph family. The Eph family of receptors are divided into 2 groups based on the similarity of their extracellular domain sequences and their affinities for binding ephrin-A and ephrin-B ligands. Ephrin receptors make up the largest subgroup of the receptor tyrosine kinase (RTK) family. The protein encoded by EPHB4 binds to Ephrin-B2 and plays an essential role in vascular development. (1) EPHB4 and its ligand ephrin-B2 are specifically expressed on venous and arterial endothelial cells, respectively, and play an essential role in vascular development via bidirectional signals. The forward EPHB4 signaling inhibits cell adhesion, chemotaxis, angiogenesis and tumor growth. Incontrast, the reverse Ephrin-B2 signaling exerts the opposite effect. It has been reported that aberrant expression of EPHB4 is associated with prostate cancer and highly malignant breast cancers, accordingly, EPHB4 has potential application as a therapeutic candidate.

Recombinant Human EPH Receptor B4 / EPHB4 Protein (rhEPHB4) Glu17-Ala539 (NP_004435.3) was produced in human 293 cells (HEK293)

Molecular Characterization
This protein carries a polyhistidine tag at the C-terminus. The protein has a calculated MW of 57.8 kDa. The protein migrates as 65-75 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

Less than 1.0 EU per μg of the rhEPHB4 by the LAL method.

>97% as determined by SDS-PAGE.

Lyophilized from 0.22 μm filtered solution in PBS, pH 7.4. Normally Mannitol or Trehalose are added as protectants before lyophilization.

See Certificate of Analysis for details of reconstitution instruction and specific concentration.

Avoid repeated freeze-thaw cycles. No activity loss was observed after storage at:
In lyophilized state for 1 year (4°C-8°C); After reconstitution under sterile conditions for 1 month (4°C-8°C) or 3 months (-20°C to -70°C).

Measured by its binding ability in a functional ELISA. Immobilized rhEPHB4 at 2 μg/ml ( 100 μl/well ) can bind human EphrinB2 with a linear range of 0.8 - 85 ng/ml.


(1) Bennett, B.D. et al., 1994, J. Biol. Chem. 269: 14211-14218.
(2) Noren, N.K. et al., 2006, Nat. Cell. Biol. 8: 815-825.
(3) Xia, G. et al., 2005, Cancer Res. 65: 4623-4632.
(4) Kertesz, N. et al., 2006, Blood. 107: 2330-2338.