• Product name
  • Description
    Rabbit polyclonal to Otx2
  • Host species
  • Specificity
    Reacts specifically with 31 kDa Otx2 protein.
  • Tested applications
    Suitable for: IHC-P, WBmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Rat
  • Immunogen

    Synthetic peptide derived from the N terminal domain of human Otx2

  • Positive control
    • This antibody gave a positive siganl in OTX2 Overexpression Lysate.



Our Abpromise guarantee covers the use of ab76748 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 1/50 - 1/200.
WB 1/100 - 1/1000. Detects a band of approximately 37 kDa (predicted molecular weight: 32 kDa).Can be blocked with Otx2 peptide (ab156847).


  • Function
    Probably plays a role in the development of the brain and the sense organs. Can bind to the BCD target sequence (BTS): 5'-TCTAATCCC-3'.
  • Tissue specificity
    Expressed in brain.
  • Involvement in disease
    Defects in OTX2 are the cause of microphthalmia syndromic type 5 (MCOPS5) [MIM:610125]. Microphthalmia is a clinically heterogeneous disorder of eye formation, ranging from small size of a single eye to complete bilateral absence of ocular tissues. Up to 80% of cases of microphthalia occur in association with syndromes that include non-ocular abnormalities. MCOPS5 patients manifest unilateral or bilateral microphthalmia/clinical anophthalmia and variable additional features including coloboma, microcornea, cataract, retinal dystrophy, hypoplasia or agenesis of the optic nerve, agenesis of the corpus callosum, developmental delay, joint laxity, hypotonia, and seizures.
  • Sequence similarities
    Belongs to the paired homeobox family. Bicoid subfamily.
    Contains 1 homeobox DNA-binding domain.
  • Developmental stage
  • Cellular localization
  • Information by UniProt
  • Database links
  • Alternative names
    • CPHD6 antibody
    • Homeobox protein OTX2 antibody
    • MCOPS 5 antibody
    • MCOPS5 antibody
    • MGC45000 antibody
    • Orthodenticle 2 antibody
    • Orthodenticle homeobox 2 antibody
    • Orthodenticle homolog 2 (Drosophila) antibody
    • Orthodenticle homolog 2 antibody
    • Orthodenticle2 antibody
    • Otx 2 antibody
    • otx2 antibody
    • OTX2_HUMAN antibody
    see all


  • All lanes : Anti-Otx2 antibody (ab76748) at 1 µg/ml

    Lane 1 : OTX1 Recombinant Protein
    at 0.1 µg
    Lane 2 : OTX2 Overexpression Lysate at 20 µg

    All lanes : Goat Anti-Rabbit IgG H&L (HRP) preadsorbed (ab97080) at 1/5000 dilution

    Developed using the ECL technique.

    Performed under reducing conditions.

    Predicted band size: 32 kDa
    Observed band size: 37 kDa (why is the actual band size different from the predicted?)

    Exposure time: 8 minutes

    Otx1 Recombinant Protein was used as a negative control. This blot was produced using a 10% Bis-tris gel under the MOPS buffer system. The gel was run at 200V for 50 minutes before being transferred onto a Nitrocellulose membrane at 30V for 70 minutes. The membrane was then blocked for an hour using 5% Bovine Serum Albumin before being incubated with ab76748 overnight at 4°C. Antibody binding was detected using an anti-rabbit antibody conjugated to HRP, and visualised using ECL development solution.


This product has been referenced in:
  • Japp AS  et al. High-resolution genomic analysis does not qualify atypical plexus papilloma as a separate entity among choroid plexus tumors. J Neuropathol Exp Neurol 74:110-20 (2015). Read more (PubMed: 25575132) »

See 1 Publication for this product

Customer reviews and Q&As

We have added the specific blocking peptide used to produce ab76748 to the catalog. A link for the blocking peptide is given below:
ab156847: https://www.abcam.com/otx2-peptide-ab156847.html

Our blocking protocol is given through the ...

Read More
Abcam has not validated the combination of species/application used in this Abreview.
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
Mouse Tissue sections (Brain/Pituitary)
Antigen retrieval step
Heat mediated - Buffer/Enzyme Used: Citric Acid
Yes - Triton
Blocking step
BSA as blocking agent for 2 hour(s) and 0 minute(s) · Concentration: 3% · Temperature: 23°C

Abcam user community

Verified customer

Submitted Jun 14 2012

Thank you for contacting us.
I'm sorry to hear that the customer has trouble with this antibody.

The information that was provided by the customer is very helpful to us and I am happy to arrange for a free of charge replacement with ab21...

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I am very pleased to hear you would like to accept our offer and test ab76748 in mouse in IHC-P. This code will give you: 1 free primary antibody before the expiration date. To redeem this offer, please submit an Abreview formouse inIHC-Pand include th...

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Thank you for confirming these details and for your cooperation. The details provided enable us to closely monitor the quality of our products. I am sorry this product did not perform as stated on the datasheet and for the inconvenience this has cau...

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Thank you for getting back to me with these questions.

I have been under the assumption that you havwe been using ab21190 for your experiments, have you been using ab92515 as well?Based on sequence homology ab92515 will recognize both protei...

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Thank you for contacting us.

The immunogen for ab92515 shares 100% identity with OTX1, so cross reactivity is predicted.

I hope this information is helpful to you. Please do not hesitate to contact us if you need any mor...

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Thank you for contacting us.

I am sorry that you have found this product unsatisfactory following its recent target refinement. As we discussed on the phone the sequence for ab21990 is shared by both OTX1 and OTX2. It was because of this tha...

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