EPHA4, GST-tag Recombinant

Catalog #

40193

$355 *

Size: 10 µg

Qty

Bulk/Custom

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Description

Human EPHA4 (Ephrin Receptor A4), also known as TYRO1, SEK, and HEK8, GenBank Accession No. NM_004438, a.a. 610-887, with N-terminal GST-tag, MW ~58 kDa, expressed in Sf9 insect cells via a baculovirus expression system.

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Synonyms

SEK, HEK8, TYRO1, EPHA-4

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Product Data Gallery

4-20% SDS-PAGE Coomassie Staining

Specific Activity

Product Info

Storage and Usage

Citations

Species

Human

Host Species/Expression System

Sf9 insect cells

Purity

≥90%

Format

Aqueous buffer solution

Formulation

50 mM Tris-HCl, pH 7.5, 150 mM NaCl, 10 mM glutathione, 0.1 mM EDTA, 0.25 mM DTT, 0.1 mM PMSF, 25% glycerol.

58 kDa

Amino Acids

610–887

Specific Activity

61 pmol/min/µg

Genbank #

NM_004438

UniProt #

P54764

Tag(s)

N-terminal GST-tag

Background

EPHA4 also known as EPH receptor A4, belongs to the ephrin receptor subfamily of protein-tyrosine kinases which have been implicated in mediating developmental events, particularly in the nervous system (1). The EPHA4 ligand ephrin-A3 is localized to the astrocytic processes that envelop the spine. Activation of EPHA4 by ephrin-A3 induces spinal retraction and reduces spine density and inhibits the interaction distorted spine shape and organization. EPHA4-null mice possess defects in the corticospinal tract and anterior commissure indicating a model in which an ephrin ligand on the axons senses EPHA4 on spinal cord cells surrounding the corticospinal tract (2).

References

1. Flanagan, J.G. et al: The ephrins and Eph receptors in neural development.". Annu. Rev. Neurosci. 1998;21: 309–45.
2. Dottori, M. et al: EphA4 (Sek1) receptor tyrosine kinase is required for the development of the corticospinal tract. Proc. Nat. Acad. Sci. 95: 13248-13253, 1998.

Storage/Stability

>6 months at -80°C.

Assay Conditions

Assay was done in Kinase buffer containing 0.2 mM DTT using Poly-(Glu4:Tyr)-biotin substrate (0.2 mg/ml) and 20 µM ATP. Reaction was done at 30°C for 40 min. Amount of ATP transferred was calculated using Kinase-Glo reagent (Promega).

Instructions for Use

Thaw on ice and gently mix prior to use. DO NOT VORTEX. Perform a quick spin before opening. Aliquot into small volumes and flash freeze for long term storage. Avoid multiple freeze/thaw cycles.

Applications

Useful for the study of enzyme kinetics, screening inhibitors, and selectivity profiling.

Shipping Temperature

-80°C

Warnings

Avoid freeze/thaw cycles

Scientific Category

Kinase/Receptor Tyrosine

Regulatory Status

Research Use Only

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EPHA4, GST-tag Recombinant

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