Recombinant Human EphA7 Fc Chimera Protein, CF Summary
Details of Functionality
Measured by its binding ability in a functional ELISA.
When Recombinant Human (rh) EphA7 Fc Chimera is coated at 2 μg/mL (100 μL/well), the concentration of biotinylayed rhEphrin-A4 Fc Chimera that produces 50% of the optimal binding response is found to be approximately 1.5 ‑ 6 ng/mL.
Source
Mouse myeloma cell line, NS0-derived human EphA7 protein
Ala30 & Gln28, predicted, not obtained, sequencing might be blocked
Structure / Form
Disulfide-linked homodimer
Protein/Peptide Type
Recombinant Proteins
Gene
EPHA7
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.
Applications/Dilutions
Dilutions
Bioactivity
Theoretical MW
85.7 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
95-105 kDa, reducing conditions
Publications
Read Publications using 6756-A7 in the following applications:
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.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS.
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Reconstitution Instructions
Reconstitute at 100 μg/mL in PBS.
Notes
This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.
Alternate Names for Recombinant Human EphA7 Fc Chimera Protein, CF
Cek11
Ebk
EC 2.7.10
EC 2.7.10.1
Ehk3
EHK-3
EK11
EPH homology kinase 3
Eph homology kinase-3
EPH receptor A7
EphA7
EPH-like kinase 11
ephrin type-A receptor 7
Hek11
Mdk1
receptor protein-tyrosine kinase HEK11
tyrosine-protein kinase receptor EHK-3
Background
EphA7, also known as Mdk1, Hek11, Ehk3, Ebk, and Cek11, is a 115 ‑ 120 kDa glycosylated member of the Eph family of transmembrane receptor tyrosine kinases (1, 2). The A and B classes of Eph proteins are distinguished by Ephrin ligand binding preference but have a common structural organization. EphA7 preferentially binds to and is activated by Ephrin‑A1, ‑A2, ‑A3, ‑A4, and ‑A5 (3 ‑ 6). Eph‑Ephrin interactions are widely involved in the regulation of cell migration, tissue morphogenesis, and cancer progression. The 532 amino acid (aa) extracellular domain (ECD) of human EphA7 contains an N‑terminal Ephrin binding region, a cysteine‑rich region, and two fibronectin type III domains (FnIII). The 421 aa cytoplasmic domain contains the tyrosine kinase domain and a sterile alpha motif (SAM) (7). Within the ECD, human EphA7 shares 98% aa sequence identity with mouse and rat EphA7. Alternate splicing generates secreted isoforms of human EphA7 that are truncated either before or following the first FnIII domain (7, 8). In mouse, EphA7 is expressed in discrete regions of the developing and adult neocortex (4, 9 ‑ 12), Purkinje layer of the cerebellum (10), limbic system (4, 9, 11, 12), visual and auditory systems (10, 11, 13), and the peripheral sensory nervous system (10, 11). EphA7 functions as a repulsive guidance molecule during the targeting of retinal axons to the superior colliculus and of neocortical axons to the thalamus (4, 9, 13). EphA7 is also expressed in mesenchymal cells along routes of axon innervation during limb development (14). EphA7 ligands are expressed in a complementary pattern during embryogenesis (3, 9, 13, 14). EphA7 is selectively expressed in early stages of the B cell lineage, and a 50 kDa secreted form is produced by mature peripheral B and T cells (6, 15). This isoform is also expressed in human lung carcinoma (8). EphA7 can be up or down‑regulated in a variety of human cancers (6, 16, 17).
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