EphA2, also known as Eck, Myk2, and Sek2, is a member of the Eph receptor tyrosine kinase family which binds Ephrins A1, 2, 3, 4, and 5 (1, 2, 3, 4). A and B class Eph proteins have a common structural organization. The human EphA2 cDNA encodes a 976 amino acid (aa) precursor including a 24 aa signal sequence, a 510 aa extracellular domain (ECD), a 24 aa transmembrane segment, and a 418 aa cytoplasmic domain. The ECD contains an N-terminal globular domain, a cysteine-rich domain, and two fibronectin type III domains (5). The cytoplasmic domain contains a juxtamembrane motif with two tyrosine residues, which are the major autophosphorylation sites, a kinase domain, and a sterile alpha motif (SAM) (5). The ECD of human EphA2 shares 90 - 94% aa sequence identity with mouse, bovine, and canine EphA2, and approximately 45% aa sequence identity with human EphA1, 3, 4, 5, 7, and 8. EphA2 becomes autophosphorylated following ligand binding (6, 7) and then interacts with SH2 domain-containing PI3-kinase to activate MAPK pathways (8, 9). Reverse signaling is also propagated through the Ephrin ligand. Transcription of EphA2 is dependent on the expression of E-Cadherin (10), and can be induced by p53 family transcription factors (11). EphA2 is upregulated in breast, prostate, and colon cancer vascular endothelium. Its ligand, EphrinA1, is expressed by the local tumor cells (12, 13). In some cases, EphA2 and EphrinA1 are expressed on the same blood vessels (14). EphA2 signaling cooperates with VEGF receptor signaling in promoting endothelial cell migration (13). The gene encoding human EphA2 maps to a region on chromosome 1 which is frequently deleted in neuroectodermal tumors (15).
Recombinant Human EphA2 Protein, CF
R&D Systems | Catalog # 3035-A2
Loading...
Key Product Details
- R&D Systems NS0-derived Recombinant Human EphA2 Protein (3035-A2)
- Quality control testing to verify active proteins with lot specific assays by in-house scientists
- All R&D Systems proteins are covered with a 100% guarantee
Source
NS0
Accession Number
Applications
Binding Activity
Loading...
Product Specifications
Source
Mouse myeloma cell line, NS0-derived human EphA2 protein
Gln25-Asn534, with a C-terminal 6-His tag
Gln25-Asn534, with a C-terminal 6-His tag
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
N-terminal Sequence Analysis
No results obtained: Gln25 predicted & Lys27
Predicted Molecular Mass
56.9 kDa
SDS-PAGE
70-75 kDa, reducing conditions
Activity
Measured by its binding ability in a functional ELISA.
Immobilized rhEphA2 at 2 µg/mL (100 µL/well) can bind rmEphrin-A1/Fc Chimera with a linear range of 0.078-5 ng/mL.
Immobilized rhEphA2 at 2 µg/mL (100 µL/well) can bind rmEphrin-A1/Fc Chimera with a linear range of 0.078-5 ng/mL.
Reviewed Applications
Read 3 reviews rated 4.7 using 3035-A2 in the following applications:
Formulation, Preparation, and Storage
3035-A2
| Formulation | Lyophilized from a 0.2 μm filtered solution in PBS. |
| Reconstitution | Reconstitute at 100 μg/mL in sterile PBS.
Loading...
|
| 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.
|
Calculators
Background: EphA2
References
- Poliakov, A. et al. (2004) Dev. Cell 7:465.
- Surawska, H. et al. (2004) Cytokine Growth Factor Rev. 15:419.
- Pasquale, E.B. (2005) Nat. Rev. Mol. Cell Biol. 6:462.
- Davy, A. and P. Soriano (2005) Dev. Dyn. 232:1.
- Bohme, B et al. (1993) Oncogene 8:2857.
- Pandey, A. et al. (1995) Science 268:567.
- Bartley, T.D. et al. (1994) Nature 368:558.
- Pandey, A. et al. (1994) J. Biol. Chem. 269:30154.
- Miao, H. et al. (2001) Nat. Cell Biol. 3:527.
- Orsulic, S. and R. Kemler (2000) J. Cell Sci. 113:1793.
- Dohn, M. et al. (2001) Oncogene 20:6503.
- Zelinski, D.P. et al. (2001) Cancer Res. 61:2301.
- Brantley, D.M. et al. (2002) Oncogene 21:7011.
- Ogawa, K. et al. (2000) Oncogene 19:6043.
- Sulman, E.P. et al. (1997) Genomics 40:371.
Alternate Names
Eck, Myk2, Sek2
Gene Symbol
EPHA2
UniProt
Additional EphA2 Products
Product Documents for Recombinant Human EphA2 Protein, CF
Certificate of Analysis
To download a Certificate of Analysis, please enter a lot or batch number in the search box below.
Note: Certificate of Analysis not available for kit components.
Product Specific Notices for Recombinant Human EphA2 Protein, CF
For research use only
Related Research Areas
Citations for Recombinant Human EphA2 Protein, CF
Powered by Bioz
Customer Reviews for Recombinant Human EphA2 Protein, CF (3)
4.7 out of 5
3 Customer Ratings
Have you used Recombinant Human EphA2 Protein, CF?
Submit a review and receive an Amazon gift card!
$25/€18/£15/$25CAN/¥2500 Yen for a review with an image
$10/€7/£6/$10CAN/¥1110 Yen for a review without an image
Submit a review
Customer Images
Showing
1
-
3 of
3 reviews
Showing All
Filter By:
-
Application: SDS-PAGE ControlVerified Customer | Posted 03/25/2025I used as control for western blot, and the recombinant protein works well
-
Application: Immunoassay StandardVerified Customer | Posted 07/05/2022works well as an ELISA standard
-
Application: Immunoassay StandardVerified Customer | Posted 01/29/2019
There are no reviews that match your criteria.