• Product name
  • Description
    Rabbit polyclonal to Nicastrin
  • Host species
  • Tested applications
    Suitable for: ICC/IF, IHC-P, WBmore details
  • Species reactivity
    Reacts with: Mouse, Rat, Human
  • Immunogen

    Synthetic 18 amino acid peptide from near the center of human Nicastrin.

  • Positive control
    • Mouse brain tissue lysate.



Our Abpromise guarantee covers the use of ab45425 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
ICC/IF Use a concentration of 20 µg/ml.
IHC-P Use a concentration of 2.5 µg/ml.
WB Use a concentration of 0.5 - 1 µg/ml. Detects a band of approximately 78 kDa (predicted molecular weight: 78 kDa).


  • Function
    Essential subunit of the gamma-secretase complex, an endoprotease complex that catalyzes the intramembrane cleavage of integral membrane proteins such as Notch receptors and APP (beta-amyloid precursor protein). It probably represents a stabilizing cofactor required for the assembly of the gamma-secretase complex.
  • Tissue specificity
    Widely expressed.
  • Sequence similarities
    Belongs to the nicastrin family.
  • Cellular localization
    Membrane. Melanosome. Identified by mass spectrometry in melanosome fractions from stage I to stage IV.
  • Information by UniProt
  • Database links
  • Alternative names
    • Anterior pharynx defective 2 antibody
    • APH 2 antibody
    • APH2 antibody
    • ATAG1874 antibody
    • KIAA0253 antibody
    • Ncstn antibody
    • NCT antibody
    • NICA_HUMAN antibody
    • Nicastrin antibody
    • RP11 517F10.1 antibody
    • RP11517F101 antibody
    see all


  • Lane 1 : Anti-Nicastrin antibody (ab45425) at 0.5 µg/ml
    Lane 2 : Anti-Nicastrin antibody (ab45425) at 1 µg/ml

    All lanes : Mouse brain tissue lysate

    Lysates/proteins at 15 µg per lane.

    All lanes : anti-rabbit HRP at 1/10000 dilution

    Predicted band size: 78 kDa
    Observed band size: 78 kDa
    Additional bands at: 54 kDa, 58 kDa, 95 kDa. We are unsure as to the identity of these extra bands.

  • Immunohistochemistry (Formalin-fixed paraffin embedded sections) of mouse brain tissue labeling Nicastrin with Anti-Nicastrin antibody (ab45425) at 20μg/ml.
  • ab45425 at 2.5 µg/ml staining Nicastrin in human brain tissue section by Immunohistochemistry (Formalin/ PFA fixed paraffin-embedded tissue sections).

  • Immunofluorescence of Nicastrin in Human Brain cells using ab45425 at 20 ug/ml.

  • ab45425 staining Nicastrin in Human breast carcinoma tissue sections by Immunohistochemistry (IHC-P - paraformaldehyde-fixed, paraffin-embedded sections). Tissue was fixed with formaldehyde and blocked with 1% BSA for 10 minutes at; antigen retrieval was by heat mediation in a citrate buffer. Samples were incubated with primary antibody (1/2500 in TBS/BSA/azide) for 16 hours at 21°C. A Biotin-conjugated Goat anti-rabbit IgG polyclonal (1/250) was used as the secondary antibody.

    See Abreview


This product has been referenced in:
  • D'Souza Y  et al. Characterization of Aldh2 (-/-) mice as an age-related model of cognitive impairment and Alzheimer's disease. Mol Brain 8:27 (2015). WB, Dot blot ; Mouse . Read more (PubMed: 25910195) »
See 1 Publication for this product

Customer reviews and Q&As

1-3 of 3 Abreviews or Q&A

Abcam guarantees this product to work in the species/application used in this Abreview.
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
Human Tissue sections (Breast carcinoma)
Breast carcinoma
Antigen retrieval step
Heat mediated - Buffer/Enzyme Used: Citric acid
Blocking step
BSA as blocking agent for 10 minute(s) · Concentration: 1%

Mr. Carl Hobbs

Verified customer

Submitted Feb 25 2013


Thank you for contacting us yesterday in regards to the Anti-Nicastrin antibody (ab45425) and Anti-PEN2 antibody (ab109619).

As discussed over the phone, I have requested further information regarding the immunogen used to raise the two antibodies. Unfortunately the exact immunogen sequence of these antibodies is proprietary, however I can say that theanti-Nicastrin antibody (ab45425) has been raised against an 18 amino acidsynthetic peptide taken from within the region 351-400 ofhumanNicastrin (NP_056146).

As stated on the datasheet of the anti-PEN2 antibody (ab109619), this antibody has been raised against a 13 amino acid peptide taken from the N-terminus of the protein. Unfortunately I cannot provide any further information at this time as it is proprietary information.

However, in each case, if you could let me know the regions of your mutations and what you are trying to understand (the likelihood of cross reactivity?) I can pass this on and provide you with some further answers.

I look forward to receiving your reply.

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Thank you for your patience. I have received a reply from the originator of ab45425 (Nicastrin antibody). The immunogenic peptide sequence is proprietary information but they have performed a sequence alignment for you. Based on the alignment results, we know it is unlikely that this product will react with Dictyostelium discoideum and we do not recommend using ab45425 with this species. Please don't hesitate to contact us again if you have further questions.

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