EphA4 Protein, Rhesus, Recombinant (hFc Tag)

Product Specifications

Background

EPH receptor A4 (ephrin type-A receptor 4), also known as EphA4, belongs to the ephrin receptor subfamily of the protein-tyrosine kinase family which 16 known receptors (14 found in mammals) are involved: EPHA1, EPHA2, EPHA3, EPHA4, EPHA5, EPHA6, EPHA7, EPHA8, EPHA9, EPHA10, EPHB1, EPHB2, EPHB3, EPHB4, EPHB5, EPHB6. The Eph family of receptor tyrosine kinases (comprising EphA and EphB receptors) has been implicated in synapse formation and the regulation of synaptic function and plasticity6. EphA4 is enriched on dendritic spines of pyramidal neurons in the adult mouse hippocampus, and ephrin-A3 is localized on astrocytic processes that envelop spines. Eph receptor mediated signaling, which is triggered by ephrins7, probably modifies the properties of synapses during synaptic activation and remodeling. Ephrin receptors are components of cell signalling pathways involved in animal growth and development, forming the largest sub-family of receptor tyrosine kinases (RTKs) . The extracellular domain of an EphA4 interacts with ephrin ligands, which may be tethered to neighbouring cells. Ligand-mediated activation of Ephs induces various important downstream effects and Eph receptors have been studied for their potential roles in the development of cancer.

Overview

A DNA sequence encoding the rhesus EPHA4 (NP_001247799.1) (Met1-Thr547) was expressed, fused with the Fc region of human IgG1 at the C-terminus.

Gene Name

EPH receptor A4

Expression System

HEK293 Cells

Tag

C-hFc

Endotoxin

< 1.0 EU per μg of the protein as determined by the LAL method.

Purity

> 96 % as determined by SDS-PAGE.

Activity

Measured by its binding ability in a functional ELISA.Immobilized Rhesus EPHA4 (Cat:PK53941M4) at 10 μg/mL (100 μl/well) can bind biotinylated Rhesus EFNA5-Fc (Cat:PK54035M4) . The ECof biotinylated Rhesus EFNA5-Fc is 14.4-33.6 ng/mL.

Form

Lyophilized

Buffer

Lyophilized from sterile PBS, pH 7.4. Please contact us for any concerns or special requirements. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.

Function

Kinase proteins, Growth Factor proteins, Receptor Proteins, Enzyme Proteins, Cytokine Proteins

Molecular Weight

The recombinant rhesus EPHA4 comprises 769 amino acids and has a calculated molecular mass of 85.4KDa.

Storage Conditions

In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise. Stable for 1 year at -20°C or below from date of shipment. For maximum recovery of product, centrifuge the original vial after thawing and opening the cap. For long-term storage, aliquot and store at -20°C or below. Avoid repeated freeze-thaw cycles.