EphB4 Antibody [Unconjugated]


Simple Western lane view shows lysates of HUVEC human umbilical vein endothelial cells, loaded at 0.2 mg/mL. A specific band was detected for EphB4 at approximately 127 kDa (as indicated) using 50 µg/mL of Goat ...read more
EphB4 was detected in immersion fixed paraffin-embedded sections of human kidney using 15 µg/mL Goat Anti-Human EphB4 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF3038) overnight at 4 °C. Tissue was ...read more
Genetic Strategies: Western blot shows lysates of HEK293T human embryonic kidney parental cell line and EphB4 knockout HEK293T cell line (KO). PVDF membrane was probed with 2 µg/mL of Goat Anti-Human ...read more
Western blot shows lysates of K562 human chronic myelogenous leukemia cell line, COLO 205 human colorectal adenocarcinoma cell line, ZR‑75 human breast cancer cell line, and HUVEC human umbilical vein ...read more
MCF‑7 human breast cancer cell line was stained with Goat Anti-Human EphB4 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF3038, filled histogram) or isotype control antibody (Catalog # AB-108-C, ...read more

Product Details

Reactivity HuSpecies Glossary
Applications WB, Simple Western, Flow, IHC, CyTOF-ready, KO
Validated by:

Genetic Strategies


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EphB4 Antibody [Unconjugated] Summary

Mouse myeloma cell line NS0-derived recombinant human EphB4
Accession # P54760
Detects human EphB4 in direct ELISAs and Western blots. In direct ELISAs, less than 10% cross-reactivity with recombinant mouse (rm) EphB4 is observed and less than 1% cross-reactivity with recombinant human (rh) EphA4, rhEphA3, rhEphB2, and rhEphB3 is observed.
Details of Functionality
ActivityAssaywCitation not found None None None None None
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.


  • Western Blot 2 ug/mL
  • Simple Western 50 ug/mL
  • Flow Cytometry 0.25 ug/10^6 cells
  • Immunohistochemistry 5-15 ug/mL
  • CyTOF-ready
  • Knockout Validated
EphB4 Knockout 293T Cell Lysate
Read Publications using
AF3038 in the following applications:

Packaging, Storage & Formulations

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.
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
No Preservative
Reconstitution Instructions
Reconstitute at 0.2 mg/mL in sterile PBS.


This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for EphB4 Antibody [Unconjugated]

  • EC 2.7.10
  • EC
  • EPH receptor B4
  • EphB4
  • ephrin type-B receptor 4
  • hepatoma transmembrane kinase
  • Htk
  • HTKephrin receptor EphB4
  • Mdk2
  • Myk1
  • soluble EPHB4 variant 1
  • soluble EPHB4 variant 2
  • soluble EPHB4 variant 3
  • Tyro11
  • Tyrosine-protein kinase receptor HTK
  • Tyrosine-protein kinase TYRO11


EphB4, also known as Htk, Myk1, Tyro11, and Mdk2, is a member of the Eph receptor tyrosine kinase family and binds Ephrin-B2. The A and B class Eph proteins have a common structural organization (1-4). The human EphB4 cDNA encodes a 987 amino acid (aa) precursor that includes a 15 aa signal sequence, a 524 aa extracellular domain (ECD), a 21 aa transmembrane segment, and a 427 aa cytoplasmic domain (5). The ECD contains an N-terminal globular domain, a cysteine-rich domain, and two fibronectin type III domains. The cytoplasmic domain contains a juxtamembrane motif with two tyrosine residues which are the major autophosphorylation sites, a kinase domain, and a conserved sterile alpha motif (SAM) (5). Activation of kinase activity occurs after membrane-bound or clustered ligand recognition and binding. The ECD of human EphB4 shares 89% aa sequence identity with mouse EphB4 and 42-45% aa sequence identity with human EphB1, 2, and 3. EphB4 is expressed preferentially on venous endothelial cells (EC) and inhibits cell-cell adhesion, chemotaxis, and angiogenesis. Opposing effects are induced by signaling through Ephrin-B2 expressed on arterial EC: adhesion, endothelial cell migration, and vessel sprouting (6). EphB4 singaling contributes to new vascularization by guiding venous EC away from Ephrin-B2 expressing EC. Ephrin-B2 signaling induces arterial EC to migrate towards nascent EphB4 expressing vessels (6). The combination of forward signaling through EphB4 and reverse signaling through Ephrin-B2 promotes in vivo mammary tumor growth and
tumor-associated angiogenesis (7). EphB4 promotes the differentiation of megakaryocytic and erythroid progenitors but not granulocytic or monocytic progenitors (8, 9).

  1. Poliakov, A. et al. (2004) Dev. Cell 7:465.
  2. Surawska, H. et al. (2004) Cytokine Growth Factor Rev. 15:419.
  3. Pasquale, E.B. (2005) Nat. Rev. Mol. Cell Biol. 6:462.
  4. Davy, A. and P. Soriano (2005) Dev. Dyn. 232:1.
  5. Bennett, B.D. et al. (1994) J. Biol. Chem. 269:14211.
  6. Fuller, T. et al. (2003) J. Cell Sci. 116:2461.
  7. Noren, N.K. et al. (2004) Proc. Natl. Acad. Sci. USA 101:5583.
  8. Wang, Z. et al. (2002) Blood 99:2740.
  9. Inada, T. et al. (1997) Blood 89:2757.


This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Publications for EphB4 Antibody (AF3038)(6)

We have publications tested in 1 confirmed species: Human.

We have publications tested in 5 applications: ICC, IHC, IHC-Fr, Immunoprecipitation, Western Blot.

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Showing Publications 1 - 6 of 6.
Publications using AF3038 Applications Species
Downregulation of proinflammatory cytokines in HTLV-1-infected T cells by Resveratrol J Exp Clin Cancer Res, 2016;35(1):118. 2016 [PMID: 27448598] (Immunoprecipitation, Human) Immunoprecipitation Human
EPHB4 kinase-inactivating mutations cause autosomal dominant lymphatic-related hydrops fetalis J Clin Invest, 2016;0(0):. 2016 [PMID: 27400125] (Immunoprecipitation, Human) Immunoprecipitation Human
Boyer-Di Ponio J, El-Ayoubi F, Glacial F, Ganeshamoorthy K, Driancourt C, Godet M, Perriere N, Guillevic O, Couraud P, Uzan G Instruction of circulating endothelial progenitors in vitro towards specialized blood-brain barrier and arterial phenotypes. PLoS ONE, 2014;9(1):e84179. 2014 [PMID: 24392113] (ICC, Human) ICC Human
Suzuki M, Abe A, Imagama S, Nomura Y, Tanizaki R, Minami Y, Hayakawa F, Ito Y, Katsumi A, Yamamoto K, Emi N, Kiyoi H, Naoe T BCR-ABL-independent and RAS / MAPK pathway-dependent form of imatinib resistance in Ph-positive acute lymphoblastic leukemia cell line with activation of EphB4. Eur. J. Haematol., 2010;84(3):229-38. 2010 [PMID: 20002159] (Western Blot, Human) Western Blot Human
He S, Kumar SR, Zhou P, Krasnoperov V, Ryan SJ, Gill PS, Hinton DR Soluble EphB4 inhibition of PDGF-induced RPE migration in vitro. Invest. Ophthalmol. Vis. Sci., 2010;51(1):543-52. 2010 [PMID: 19696168] (IHC-Fr, Human) IHC-Fr Human
Kwan Tat S, Pelletier JP, Amiable N, Boileau C, Lajeunesse D, Duval N, Martel-Pelletier J Activation of the receptor EphB4 by its specific ligand ephrin B2 in human osteoarthritic subchondral bone osteoblasts. Arthritis Rheum., 2008;58(12):3820-30. 2008 [PMID: 19035475] (IHC, Human) IHC Human

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Control Lysate(s)

Secondary Antibodies


Isotype Controls

Other Available Formats

Biotin BAF3038

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Gene Symbol EPHB4
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