• Product name
    Anti-VEGF Receptor 2 antibody
    See all VEGF Receptor 2 primary antibodies
  • Description
    Rabbit polyclonal to VEGF Receptor 2
  • Host species
  • Specificity
    The polyclonal antibody will detect native and recombinant human VEGFR2/KDR in ELISA experiments and on the surface or solubilized from different human cell types.
  • Tested applications
    Suitable for: Sandwich ELISA, ELISA, WB, Flow Cyt, IHC-Fr, IP, Neutralisingmore details
  • Species reactivity
    Reacts with: Mouse, Rat, Human
  • Immunogen

    Recombinant fragment corresponding to Human VEGF Receptor 2. Highly pure recombinant human soluble extracellular domain of KDR (110 kDa) (D1-D7).


Our Abpromise guarantee covers the use of ab11939 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
Sandwich ELISA Use a concentration of 0.5 µg/ml. Can be paired for Sandwich ELISA with Mouse monoclonal [mV1001.3m-h] to VEGF Receptor 2 (ab42228).

For sandwich ELISA, use this antibody as Detection at 0.5µg/ml with ab42228 as Capture.

ELISA Use a concentration of 5 - 15 µg/ml.
WB Use a concentration of 1 - 5 µg/ml. Predicted molecular weight: 151 kDa.
Flow Cyt Use a concentration of 1 - 5 µg/ml.

ab171870 - Rabbit polyclonal IgG, is suitable for use as an isotype control with this antibody.


IHC-Fr Use at an assay dependent concentration.
IP Use at 1-2 µg/mg of lysate.
Neutralising Use a concentration of 20 - 25 µg/ml. PubMed: 17991870


  • Function
    Receptor for VEGF or VEGFC. Has a tyrosine-protein kinase activity. The VEGF-kinase ligand/receptor signaling system plays a key role in vascular development and regulation of vascular permeability. In case of HIV-1 infection, the interaction with extracellular viral Tat protein seems to enhance angiogenesis in Kaposi's sarcoma lesions.
  • Involvement in disease
    Defects in KDR are associated with susceptibility to hemangioma capillary infantile (HCI) [MIM:602089]. HCI are benign, highly proliferative lesions involving aberrant localized growth of capillary endothelium. They are the most common tumor of infancy, occurring in up to 10% of all births. Hemangiomas tend to appear shortly after birth and show rapid neonatal growth for up to 12 months characterized by endothelial hypercellularity and increased numbers of mast cells. This phase is followed by slow involution at a rate of about 10% per year and replacement by fibrofatty stroma.
  • Sequence similarities
    Belongs to the protein kinase superfamily. Tyr protein kinase family. CSF-1/PDGF receptor subfamily.
    Contains 7 Ig-like C2-type (immunoglobulin-like) domains.
    Contains 1 protein kinase domain.
  • Post-translational
    Phosphorylated. Dephosphorylated by PTPRB. Dephosphorylated by PTPRJ at Tyr-951, Tyr-996, Tyr-1054, Tyr-1059, Tyr-1175 and Tyr-1214.
  • Cellular localization
  • Information by UniProt
  • Database links
  • Alternative names
    • CD309 antibody
    • CD309 antigen antibody
    • EC antibody
    • Fetal liver kinase 1 antibody
    • FLK-1 antibody
    • FLK1 antibody
    • FLK1, mouse, homolog of antibody
    • Kdr antibody
    • Kinase insert domain receptor (a type III receptor tyrosine kinase) antibody
    • Kinase insert domain receptor antibody
    • KRD1 antibody
    • Ly73 antibody
    • Protein tyrosine kinase receptor FLK1 antibody
    • Protein-tyrosine kinase receptor flk-1 antibody
    • soluble VEGFR2 antibody
    • Tyrosine kinase growth factor receptor antibody
    • Vascular endothelial growth factor receptor 2 antibody
    • VEGFR 2 antibody
    • VEGFR antibody
    • VEGFR-2 antibody
    • VEGFR2 antibody
    • VGFR2_HUMAN antibody
    see all


  • All lanes : Anti-VEGF Receptor 2 antibody (ab11939)

    Lane 1 : recombinant human soluble VEGFR-2
    Lane 2 : recombinant native VEGFR-2

    All lanes : anti-rabbit AP-conjugated antibody

    Predicted band size: 151 kDa

    Samples were loaded in 10% SDS-PAGE under reducing conditions.

  • Flow Cytometry analysis of primary human dermal lymphatic endothelial cells (HDLEC) labelling VEGF Receptor 2 with ab11939.

  • Flow Cytometry analysis of primary human umbilical vein endothelial cells (HUVEC) labelling VEGF Receptor 2 with ab11939.

  • Immunohistochemistry (Frozen sections) analysis of human spleen tissue sections labelling VEGF Receptor 2 with ab11939.

  • Immunohistochemistry (Frozen sections) analysis of human spleen tissue sections labelling VEGF Receptor 2 with ab11939.

  • Standard curve for VEGF Receptor 2 (Analyte: ab54347); dilution range 1pg/ml to 1µg/ml using Capture Antibody Mouse monoclonal [mV1001.3m-h] to VEGF Receptor 2 (ab42228) at 5µg/ml and Detector Antibody Rabbit polyclonal to VEGF Receptor 2 (ab11939) at 0.5µg/ml.


This product has been referenced in:
  • Zhao F  et al. Propranolol suppresses HUVEC viability, migration, VEGF expression, and promotes apoptosis by downregulation of miR-4295. J Cell Biochem 120:6614-6623 (2019). Read more (PubMed: 30368887) »
  • He M  et al. Effects of HGF and KGF gene silencing on vascular endothelial growth factor and its receptors in rat ultraviolet radiation-induced corneal neovascularization. Int J Mol Med 43:1888-1899 (2019). Read more (PubMed: 30816491) »
See all 21 Publications for this product

Customer reviews and Q&As

1-4 of 4 Abreviews or Q&A


We have located the order associated with this purchase of ab11939 .It was purchased in May, 2008, which is well beyond the 6 month guarantee period we offer on all our products.

Is it possible that over the years, others in your lab have used the antibody, which could account for the low volume?

I hope this is helpful. Please contact us again if you have any further questions.

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Thanks for following up with me regarding the PO number for ab11939.

Unfortunately I have not found this number to correspond to any orders in our system. Also I have searched our last 2 years of orders for ab11939 and not found any from UC Riverside.

Does the PO information you found regarding this order have an associated order date?


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Thank you for your email. Ab11939 has been tested for application in WB and IP with human samples, and our policy is that we guarantee that the product will work as stated on the online datasheet. If not, and the product has been purchased in the past 90 days, we will offer a replacement or refund. In order to investigate this, it would be very helpful if you could provide details regarding the protocol that was used. Also, please indicate the batch number (located on the vial) or the Abcam order number or purchase order number that was used. Thank you, and have a nice weekend.

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Thank you for your email. Yes, ab23734 has been tested for application in both IP and Western blotting. Our policy at Abcam is that if an antibody does not work as specified on the datasheet, we will offer a replacement or reimbursement. For ab11939, the antibody is guaranteed to work in IP with human samples. Often it is possible to make suggestions that help resolve problems. We will happily offer technical support and in the event that a product is not functioning in the applications cited on the product data sheet (and the problem has been reported within 90 days of purchase), and if it appears that the antibody is at fault, a credit note/refund will be offered. If you would like some technical support I enclose a link to a questionnaire which will help you put your protocol information together very easily so we can look into the details of the experiment and provide some help. https://www.abcam.com/index.html?section=ip&pageconfig=technical&intAbID=11939&mode=questionaire

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