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  2. Cytokines and Growth Factors Receptor Proteins Enzymes & Regulators Biotinylated Proteins
  3. Ephrin/Eph Family Receptor Tyrosine Kinases Protein Tyrosine Kinases
  4. Eph Receptors
  5. EphA2
  6. EphA2 Protein, Human (Biotinylated, HEK293, His-Avi)

EphA2 Protein, Human (Biotinylated, HEK293, His-Avi)

Cat. No.: HY-P72992
Data Sheet Handling Instructions Technical Support

The EphA2 protein is an important member of the ephrin receptor subfamily that mediates developmental events, particularly in the nervous system. It has a single kinase domain and an extracellular region that binds ephrin-A ligands. EphA2 Protein, Human (Biotinylated, HEK293, His-Avi) is the recombinant human-derived EphA2 protein, expressed by HEK293 , with C-6*His, C-Avi labeled tag. The total length of EphA2 Protein, Human (Biotinylated, HEK293, His-Avi) is 511 a.a., with molecular weight of ~59.4 kDa.

For research use only. We do not sell to patients.

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20 μg USD 286 In-stock
100 μg USD 800 In-stock
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  • Biological Activity

  • Technical Parameters

  • Properties

  • Documentation

Description

The EphA2 protein is an important member of the ephrin receptor subfamily that mediates developmental events, particularly in the nervous system. It has a single kinase domain and an extracellular region that binds ephrin-A ligands. EphA2 Protein, Human (Biotinylated, HEK293, His-Avi) is the recombinant human-derived EphA2 protein, expressed by HEK293 , with C-6*His, C-Avi labeled tag. The total length of EphA2 Protein, Human (Biotinylated, HEK293, His-Avi) is 511 a.a., with molecular weight of ~59.4 kDa.

Background

EphA2 Protein, a member of the ephrin receptor subfamily within the protein-tyrosine kinase family, plays a crucial role in mediating developmental events, particularly within the nervous system. Featuring a single kinase domain and an extracellular region with a Cys-rich domain and 2 fibronectin type III repeats, EPH receptors are involved in binding ephrin-A and ephrin-B ligands. EphA2 specifically binds ephrin-A ligands and displays broad expression across various tissues, including esophagus (RPKM 37.8), urinary bladder (RPKM 18.3), and 21 other tissues. Additionally, mutations in this gene are associated with certain genetically-related cataract disorders, highlighting its significance in both developmental processes and ocular health.

Biological Activity

Measured by its binding ability in a functional ELISA. Immobilized EFNA1-hFc at 10 μg/mL (100 μL/well) can bind Biotinylated EphA2 Protein, Human (HEK293, His-Avi) and the EC50 is 20-40 ng/mL.

Species

Human

Source

HEK293

Tag

C-6*His;C-Avi

Accession

NP_004422.2 (A24-N534)

Gene ID
Molecular Construction
N-term
EphA2 (A24-N534)
Accession # NP_004422.2
Avi-His
C-term
Synonyms
Ephrin type-A receptor 2; Epithelial cell kinase; EPHA2; ECK
AA Sequence

LKTYVDPHTYEDPNQAVLKFTTEIHPSCVTRQKVIGAGEFGEVYKGMLKTSSGKKEVPVAIKTLKAGYTEKQRVDFLGEAGIMGQFSHHNIIRLEGVISKYKPMMIITEYMENGALDKFLREKDGEFSVLQLVGMLRGIAAGMKYLANMNYVHRDLAARNILVNSNLVCKVSDFGLSRVLEDDPEATYTTSGGKIPIRWTAPEAISYRKFTSASDVWSFGIVMWEVMTYGERPYWELSNHEVMKAINDGFRLPTPMDCPSAIYQLMMQCWQQERARRPKFADIVSILDKLIRAPDSLKTLADFDPRVSIRLPSTSGSEGVPFRTVSEWLESIKMQQYTEHFMAAGYTAIEKVVQMTNDDIKRIGVRLPGHQKRIAYSLLGLKDQVNTVGIPI

Molecular Weight

Approximately 59.4 kDa

Purity

Greater than 95% as determined by reducing SDS-PAGE.

Appearance

Lyophilized powder.

Formulation

Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Reconstitution

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O.

Storage & Stability

Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Shipping

Room temperature in continental US; may vary elsewhere.

Documentation
Help & FAQs
  • How should lyophilized recombinant proteins be reconstituted and stored?

    1. Before opening the cap, centrifuge the vial at 13000 rpm for 20-30 seconds. This step will ensure that any lyophilized powder that may have adhered to the cap or walls is collected at the bottom of the vial, minimizing the risk of product loss. 2. Taking 10 μg as an example, first add 20 μL of reconstituted solution provided by MCE and use a pipette to gently resuspend the lyophilized protein until it is fully dissolved.. (For most proteins, the reconstitution solution we provide is sterile water. If a diluent other than water is required, it will be indicated in the product's Certificate of Analysis (COA).). 3. Add an additional 80 μL of buffer/culture medium containing carrier protein (either 0.1% BSA, 5% HSA, 10% FBS, or 5% trehalose), and then use a pipette to gently mix until uniform. The final concentration is should not be lower than 100 μg/mL. 4. Aliquot at least 20 μL per tube. 5. After aliquoting, store it frozen at a temperature ranging from -20ºC to -80ºC, and it can be preserved for 3 to 6 months.

  • How should solution-form recombinant proteins be stored?

    1. The product can be stored in its original form and diluted as needed upon use. 2. Alternatively, dilute with a buffer/culture medium containing a carrier protein (either 0.1% BSA, 5% HSA, 10% FBS, or 5% alginate), mix well by pipetting, and ensure that

  • Why is it necessary to add carrier proteins?

    Carrier proteins are commonly added to enhance the stability of recombinant proteins, preventing them from adhering to the walls of the container during freezing or thawing processes. Plastic tubes have a certain adsorptive capacity for proteins, which may lead to difficulty in separating the protein from the tube walls, resulting in a decrease in the actual concentration of the protein in the solution and thus affecting its activity. To minimize such losses, it is recommended to add a commonly used carrier protein solution prior to the long-term storage of recombinant protein products.

  • Carrier protein types and options?

    In cases where the carrier protein is not expected to influence the experimental outcomes, an appropriate carrier protein, such as 0.1% BSA (Bovine Serum Albumin), 5% HSA (Human Serum Albumin), 10% FBS (Fetal Bovine Serum), or 5% trehalose, can be incorpo

  • Reconstitution Calculator

  • Dilution Calculator

  • Specific Activity Calculator

The reconstitution calculator equation

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
= ÷

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

The specific activity calculator equation

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)
Unit/mg = 106 ÷ ng/mL

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Inquiry Information

Product Name:
EphA2 Protein, Human (Biotinylated, HEK293, His-Avi)
Cat. No.:
HY-P72992
Quantity:
MCE Japan Authorized Agent: