• Product name

    Anti-Endostatin/COL18A1 antibody [1837.46]
    See all Endostatin/COL18A1 primary antibodies
  • Description

    Mouse monoclonal [1837.46] to Endostatin/COL18A1
  • Host species

  • Specificity

    The clone number has been updated from (4i37) to (1837.46) both clone numbers name the same antibody clone.
  • Tested applications

    Suitable for: WB, IHC-Fr, IHC-Pmore details
  • Species reactivity

    Reacts with: Mouse, Human
    Predicted to work with: Rat
  • Immunogen

    Recombinant full length protein corresponding to Mouse Endostatin/COL18A1.

  • Positive control

    • 3T3 cell lysates with 50ng added recombinant human Endostatin/COL18A1.
  • General notes

     This product was previously labelled as Endostatin




Our Abpromise guarantee covers the use of ab64569 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
WB 1/500 - 1/2000. Detects a band of approximately 22 kDa (predicted molecular weight: 22 kDa). An unidentifed protein is also weakly detected at 54kDa.
IHC-Fr Use at an assay dependent dilution.
IHC-P Use at an assay dependent dilution.


  • Function

    COLA18A probably plays a major role in determining the retinal structure as well as in the closure of the neural tube.
    Endostatin potently inhibits endothelial cell proliferation and angiogenesis. May inhibit angiogenesis by binding to the heparan sulfate proteoglycans involved in growth factor signaling.
  • Tissue specificity

    Present in multiple organs with highest levels in liver, lung and kidney.
  • Involvement in disease

    Defects in COL18A1 are a cause of Knobloch syndrome (KNO) [MIM:267750]. KNO is an autosomal recessive disorder defined by the occurrence of high myopia, vitreoretinal degeneration with retinal detachment, macular abnormalities and occipital encephalocele.
  • Sequence similarities

    Belongs to the multiplexin collagen family.
    Contains 1 FZ (frizzled) domain.
    Contains 1 TSP N-terminal (TSPN) domain.
  • Post-translational

    Prolines at the third position of the tripeptide repeating unit (G-X-Y) are hydroxylated in some or all of the chains.
  • Cellular localization

    Secreted > extracellular space > extracellular matrix.
  • Information by UniProt
  • Database links

  • Alternative names

    • Alpha 1 collagen type 18 (XVIII)(COL18A1) antibody
    • Alpha 1 type XVIII collagen antibody
    • Antiangiogenic agent antibody
    • COIA1_HUMAN antibody
    • COL15A1 antibody
    • Col18a1 antibody
    • Collagen alpha 1(XV) chain antibody
    • Collagen alpha 1(XVIII) chain antibody
    • Collagen alpha-1(XV) chain antibody
    • Collagen type XV proteoglycan antibody
    • Collagen type XVIII alpha 1 antibody
    • Collagen XV, alpha 1 polypeptide antibody
    • Collagen, type XV, alpha 1 antibody
    • Endostatin antibody
    • Endostatin XV antibody
    • FLJ27325 antibody
    • FLJ34914 antibody
    • FLJ38566 antibody
    • KNO antibody
    • KNO1 antibody
    • KS antibody
    • MGC74745 antibody
    • Multi functional protein MFP antibody
    • OTTHUMP00000021782 antibody
    • OTTHUMP00000115472 antibody
    • OTTHUMP00000115473 antibody
    see all


This product has been referenced in:

  • Ai J  et al. Generation of an anti-angiogenic endothelial progenitor cell line via endostatin gene transfer. Mol Med Rep 17:5814-5820 (2018). Read more (PubMed: 29484399) »
  • Wang Z  et al. ß-elemene enhances anticancer bone neoplasms efficacy of paclitaxel through regulation of GPR124 in bone neoplasms cells. Oncol Lett 16:2143-2150 (2018). Read more (PubMed: 30008912) »
See all 12 Publications for this product

Customer reviews and Q&As

1-4 of 4 Abreviews or Q&A


Thank you for contacting us.

This antibody has not been tested for crossreactivity against other CDAFs, such as restin, arrestin, canstatin, or tumstatin.

I hope this information is nevertheless helpful to you. Please do not hesitate to contact us if you need any more advice or information.

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Thank you for your reply.

In testing, I can confirm that ab64569 Anti-Endostatin antibody [4i37]has been used successfully in IHCon human colon tissue (endothethial cells). These should be a good positive control. The negative control usedwas the same sample without the primary antibody.

We do have human colon tissue slides available. I can recommend to review the datasheet for further information:

ab4327 Colon (human) normal tissue slides
https://www.abcam.com/index.html?datasheet=4327 (or use the following: https://www.abcam.com/index.html?datasheet=4327).

I hope this will be helpful to you. If you have any further questions, please do not hesitate to contact me.

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Thank you for your enquiry.

I am pleased to provide the following information and protocol for you for ab64569.

I can confirm this antibody has been tested in mouse kidney and heart, and human kidney. I am sorry it has regrettably not been tested in liver samples, including rat liver,as far as we are aware.

Here is an IHC protocol for this antibody. Please note this is a guideline only and so further individual optimization may be required.

1. Cut tissues from microarrays and deparaffinize in xylene and rehydrate in graded alcohols and water.

2. Block endogenous peroxidase by soaking in 3% H2O2.

3. For antigen retrieval, microwave slides in citrate buffer for 15 min

4. A blocking step is carried out before overnight incubation at 4°C with primary antibody at a 1:50-1:100 dilution.

5. After extensive washing, incubate the sections at room temperature for 10 min with biotinylated anti-mouse immunoglobulin antibody and subsequently with streptavidin-biotin (HRP) complex.

6. Visualize reaction products immersing slides in 3,3'-diaminobenzidine tetrahydrochloride. Counterstaining is performed with hematoxylin.

I notice you mention products rather than product, however, this is the only product code provided (ab64569Endostatin antibody [4i37]). If you require any information regarding other antibodies, please do not hesitate to let meknow the product codes and what you require, and I'll be happy to help.

I hope this will be helpful to you. If you have any further questions, please do not hesitate to contact us.

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I am very pleased to hear you would like to accept our offer and test ab64569 in rat. This code will give you: 1 free primary antibody before the expiration date. To redeem this offer, please submit an Abreview for rat and include this code in the “Additional Comments” section so we know the Abreview is for this promotion. For more information on how to submit an Abreview, please visit the site: www.abcam.com/Abreviews.

Remember, we publish both positive and negative Abreviews on our datasheets so please submit the results of your tests. The code will be active once the Abreview has been submitted and can be redeemed in one of the following ways: 1) Call to place your order and mention the code to our customer service department; 2) Include the code in your fax order; 3) Place your order on the web and enter the promotional code.

Any feedback that you can provide will be greatly appreciated, whether positive or negative. If you have any further questions, please do not hesitate to contact us. We look forward to receiving your Abreview and wish you luck with your research.

The terms and conditions applicable to this offer can be found here: www.abcam.com/collaborationdiscount.

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