• Product name
  • Description
    Rabbit polyclonal to DLK-1
  • Host species
  • Tested applications
    Suitable for: IHC-P, WBmore details
  • Species reactivity
    Reacts with: Mouse, Human
    Predicted to work with: Rat, Cow
  • Immunogen

    Synthetic peptide corresponding to Human DLK-1 aa 350 to the C-terminus (C terminal) conjugated to keyhole limpet haemocyanin.
    (Peptide available as ab23442)

  • Positive control
    • This antibody gave a positive signal in E18.5 Mouse Muscle Wild Type Tissue Lysate.



Our Abpromise guarantee covers the use of ab21682 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
IHC-P 1/150. Perform heat mediated antigen retrieval via the microwave method before commencing with IHC staining protocol.
WB 1/2000. Detects a band of approximately 45,48 kDa (predicted molecular weight: 41 kDa).

Abcam recommends using milk as the blocking agent. Abcam welcomes customer feedback and would appreciate any comments regarding this product.


  • Function
    May have a role in neuroendocrine differentiation.
  • Tissue specificity
    Found within the stromal cells in close contact to the vascular structure of placental villi, yolk sac, fetal liver, adrenal cortex and pancreas and in the beta cells of the islets of Langerhans in the adult pancreas. Found also in some forms of neuroendocrine lung tumor tissue.
  • Sequence similarities
    Contains 6 EGF-like domains.
  • Post-translational
    N- and O-glycosylated.
  • Cellular localization
  • Information by UniProt
  • Database links
  • Alternative names
    • Adipocyte differentiation inhibitor protein antibody
    • Brevideltin antibody
    • Delta like 1 homolog antibody
    • Delta like homolog antibody
    • Delta like protein antibody
    • Delta1 antibody
    • DLK 1 antibody
    • DLK antibody
    • DLK-1 antibody
    • DLK1 antibody
    • DLK1_HUMAN antibody
    • FA 1 antibody
    • FA1 antibody
    • Fetal antigen 1 antibody
    • pG2 antibody
    • Preadipocyte factor 1 antibody
    • Pref 1 antibody
    • Pref antibody
    • Pref1 antibody
    • Protein delta homolog 1 antibody
    • Secredeltin antibody
    • ZOG antibody
    see all


  • Image courtesy of Human Protein Atlas

    ab21682 staining DLK-1 in human bone marrow within the haemopoietic tissue and not the adipocytes. Paraffin embedded human bone marrow was incubated with ab21682 (1/150 dilution) for 30 mins at room temperature. Antigen retrieval was performed by heat induction in citrate buffer pH 6.

    ab21682 was tested in a tissue microarray (TMA) containing a wide range of normal and cancer tissues as well as a cell microarray consisting of a range of commonly used, well characterised human cell lines. Further results for this antibody can be found at www.proteinatlas.org.

  • All lanes : Anti-DLK-1 antibody (ab21682) at 1/2000 dilution ((5% Milk blocking))

    Lane 1 : E18.5 Mouse Muscle Wild Type Tissue Lysate
    Lane 2 : E18.5 Mouse Muscle DLK1 Knockout Tissue Lysate

    Lysates/proteins at 5 µg per lane.

    All lanes : Goat polyclonal to Rabbit IgG - H&L - Pre-Adsorbed (HRP) at 1/5000 dilution

    Developed using the ECL technique.

    Performed under reducing conditions.

    Predicted band size: 41 kDa
    Observed band size: 45,48 kDa (why is the actual band size different from the predicted?)
    Additional bands at: 15 kDa (possible cleavage fragment), 55 kDa. We are unsure as to the identity of these extra bands.

    Exposure time: 3 minutes

    This blot was produced using an 8% Tris-glycine gel under the Tris-glycine buffer system. The gel was run at 120V for 1 hour 15 minutes before being transferred onto a Nitrocellulose membrane at 30V for 70 minutes. The membrane was then blocked for an hour using 5% Milk before being incubated with ab21682 overnight at 4°C. Antibody binding was detected using an anti-rabbit antibody conjugated to HRP, and visualised using ECL development solution ab133406.


    Abcam recommends using milk as the blocking agent. Abcam welcomes customer feedback and would appreciate any comments regarding this product and the data presented above.

  • Immohistochemical analysis of formaldehyde-fixed paraffin-embedded human placental tissue sections, labelling DLK-1 with ab21682 at a dilution of 1/1000 incubated for 20 minutes at 25°C. Blocking was with hydrogen peroxide at 3% incubated for 10 minutes at 25°C. The secondary used was a gekko ant-rabbit polyclonal HRP conjugate used undiluted.

    See Abreview


This product has been referenced in:
  • Suffee N  et al. Atrial natriuretic peptide regulates adipose tissue accumulation in adult atria. Proc Natl Acad Sci U S A 114:E771-E780 (2017). Read more (PubMed: 28096344) »
  • Zhang Y  et al. Irisin Inhibits Atherosclerosis by Promoting Endothelial Proliferation Through microRNA126-5p. J Am Heart Assoc 5:N/A (2016). WB ; Human . Read more (PubMed: 27671318) »

See all 13 Publications for this product

Customer reviews and Q&As

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
Human Tissue sections (placenta)
Antigen retrieval step
Heat mediated - Buffer/Enzyme Used: citrate, pH6, 100C, 20 min
Blocking step
H2O2 as blocking agent for 10 minute(s) · Concentration: 3% · Temperature: 25°C

Abcam user community

Verified customer

Submitted Aug 19 2015

Immunocytochemistry/ Immunofluorescence
Mouse Cell (neurons)
Yes - 0.2% Tween 20
Blocking step
Serum as blocking agent for 30 minute(s) · Concentration: 10% · Temperature: 24°C

Abcam user community

Verified customer

Submitted Apr 23 2014

Muchas gracias por tu paciencia.

Lamento la espera. Mis compañeros del laboratorio me han confirmado que este anticuerpo solo lo han testado en células MES en inmunocitoquímica, y en WB en lisados de MEL-1, F9 y Mouse EG....

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Je suis ravie que vous souhaitiez participer a notre offre et tester ab21682 en cytométrie de flux. Le code de réduction correspondant est xx . Ce code de réduction est utilisable sous 120 jours et pour l’achat d’un autre anticorps primaire.
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Thank you for these precisions.
We are still working on your complaint for ab21682 (anti-DLK1) and we will come back to you as soon as possible.
As requested, I have issued a free of charge replacement with the order number *******.
To che...

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Thank you very much for your email and your patience.
In regards to the first issue, with the purification of ab110363, I had contacted the laboratory. There is nothing special with this clone. The only thing which might could explain the result i...

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Thank you for calling Abcam last night.

I have spoken to my colleagues about your wish to return the 2 vials of ab21682. Since they were purchased more than 2 weeks ago, we cannot accept them as a return, I am sorry about that. I understand t...

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Thank you for contacting us regarding this possibility. I have contacted the lab regarding the possibility that this product is recognizing the extracellular domain. I’m afraid we have no testing data to show the specificity for the intracellu...

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Immunocytochemistry/ Immunofluorescence
Mouse Cell (Embryonic stem cell-derived hepatocyte precursors)
Embryonic stem cell-derived hepatocyte precursors
Blocking step
BSA as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 5% · Temperature: 20°C

Dr. Irina Drobinskaya

Verified customer

Submitted Feb 12 2009


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