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Mouse EphA2 Antibody

R&D Systems, part of Bio-Techne | Catalog # AF639

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AF639-SP
AF639

Key Product Details

Species Reactivity

Validated:

Mouse

Cited:

Human, Mouse, Transgenic Mouse

Applications

Validated:

Immunohistochemistry, Western Blot

Cited:

Immunohistochemistry, Immunohistochemistry-Paraffin, Immunohistochemistry-Frozen, Western Blot

Label

Unconjugated

Antibody Source

Polyclonal Goat IgG

Product Specifications

Immunogen

Mouse myeloma cell line NS0-derived recombinant mouse EphA2
Ala22-Ala535
Accession # AAA82113

Specificity

Detects mouse EphA2 in direct ELISAs and Western blots. In direct ELISAs, approximately 10% cross-reactivity with recombinant human (rh) EphA2 is observed, and less than 1% cross‑reactivity with rhEphA1, recombinant mouse (rm) EphA3, rmEphA4, rmEphA6, rmEphA7, rmEphA8, and recombinant rat EphA5 is observed.

Clonality

Polyclonal

Host

Goat

Isotype

IgG

Scientific Data Images for Mouse EphA2 Antibody

Detection of EphA2 by Western Blot

Detection of EphA2 by Western Blot

EPHA2 is critical for EFN ligand responses in mESCs.a Average protein copy number per cell determined for receptor kinases in mESCs, using quantitative whole-cell proteomics. Data are presented as mean ± SD (n = 3). b Workflow for quantification of EPH–EFN interactions in mESCs by EFN ligand affinity purification mass spectrometry. c Proof-of-principle identification of EPH–EFN interactions by EFN ligand affinity purification. EPHA2 levels were determined by immunoblotting. d Coomassie staining of EFNA1/B1 affinity purification from mESCs. EFNA1, EFNB1 and EPHA2 proteins are indicated. (*) = non-specific band. e Mass-spectrometry analysis of 75–130-kDa region of the Coomassie stained EFNA1/EFNB1 affinity purification shown in (d). Total spectral counts recovered for each EPH receptor family member are indicated. f EFNA1/B1 affinity purification from intact Epha2+/+ and pooled Epha2−/− mESCs. Phosphotyrosine (pTyr), EPHA2 and ERK1/2 levels were determined by immunoblotting. Note that the pTyr signal is specific for EPHA2, and is not detected in the absence of EFN ligand. g EPHA2 was immunoprecipitated from Epha2+/+ and Epha2−/− mESCs, and pTyr, EPHA2, EFNA1 and ERK1/2 levels determined by immunoblotting. hEpha2+/+ mESCs were stimulated with EFNA1-expressing Epha2−/− mESCs for 15 or 40 min. EPHA2 was immunoprecipitated, and pTyr and EPHA2 levels determined by immunoblotting. Source data are provided as a Source Data file. Image collected and cropped by CiteAb from the following open publication (https://pubmed.ncbi.nlm.nih.gov/32170114), licensed under a CC-BY license. Not internally tested by R&D Systems.

Applications for Mouse EphA2 Antibody

Application
Recommended Usage

Immunohistochemistry

5-15 µg/mL
Sample: Immersion fixed frozen sections of mouse embryo (E11)

Western Blot

0.1 µg/mL
Sample: Recombinant Mouse EphA2 Fc Chimera (Catalog # 639-A2)

Formulation, Preparation, and Storage

Purification

Antigen Affinity-purified

Reconstitution

Reconstitute at 0.2 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.

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Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

Stability & Storage

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.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: EphA2

EphA2, also known as Eck, Myk2, and Sek2 (1), is a member of the Eph receptor family which binds members of the ephrin ligand family. There are two classes of receptors, designated A and B. Both the A and B class receptors have an extracellular region consisting of a globular domain, a cysteine-rich domain, and two fibronectin type III domains. This is followed by the transmembrane region and cytoplasmic region. The cytoplasmic region contains a juxtamembrane motif with two tyrosine residues, which are the major autophosphorylation sites, a kinase domain, and a conserved sterile alpha motif (SAM) in the carboxy tail which contains one conserved tyrosine residue. Activation of kinase activity occurs after ligand recognition and binding. EphA2 has been shown to bind ephrin-A3, ephrin-A1, ephrin-A5, ephrin-A4, and ephrin-A2 (2, 3). The extracellular domains of mouse and human EphA2 share greater than 92% amino acid identity. Only membrane-bound or Fc‑clustered ligands are capable of activating the receptor in vitro. While soluble monomeric ligands bind the receptor, they do not induce receptor autophosphorylation and activation (2). In vivo, the ligands and receptors display reciprocal expression (3). It has been found that nearly all receptors and ligands are expressed in developing and adult neural tissue (3). The Eph/ephrin families also appear to play a role in angiogenesis (3).

References

  1. Eph Nomenclature Committee [letter] (1997) Cell 90:403.
  2. Flanagan, J.G. and P. Vanderhaegen (1998) Annu. Rev. Neurosci. 21:309.
  3. Pasquale, E.B. (1997) Curr. Opin. Cell. Biol. 9:608.

Alternate Names

Eck, Myk2, Sek2

Entrez Gene IDs

1969 (Human); 13836 (Mouse)

Gene Symbol

EPHA2

UniProt

Additional EphA2 Products

Product Documents for Mouse EphA2 Antibody

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 Mouse EphA2 Antibody

For research use only

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