Biotin anti-β-Amyloid, x-42 Antibody (Previously Covance catalog# SIG-39170)

Pricing & Availability
1-11-3 (See other available formats)
Regulatory Status
Other Names
Amyloid beta A4 protein, preA4, protease nexin-II, peptidase nexin-II, beta-amyloid peptide, alzheimer disease amyloid protein, cerebral vascular amyloid peptide, APP, Amyloid Precursor Protein
Covance Catalog# SIG-39170
Rabbit IgG
Ave. Rating
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Product Citations
Positive staining of Clone 1-11-3 on formalin-fixed paraffin-embedded Human Alzheimer's Brain at 10 µg/mL.
  • 1-11-3_Biotin_beta-Amyloid_x-42_Antibody_IHC_030315
    Positive staining of Clone 1-11-3 on formalin-fixed paraffin-embedded Human Alzheimer's Brain at 10 µg/mL.
Cat # Size Price Save
812103 50 µL ¥102,740

Amyloid beta (Aβ or Amyloid beta) denotes peptides of 36-43 amino acids in length that are crucially involved in Alzheimer's disease as the main component of the amyloid plaques found in the brains of Alzheimer patients. The peptides result from the amyloid precursor protein (APP), which is cut by certain enzymes to yield Aβ. Aβ molecules can aggregate to form oligomers (known as "seeds") which are believed to be able to induce other Aβ molecules to also take the misfolded oligomeric form, leading to a chain reaction akin to a prion infection. The seeds or the resulting amyloid plaques are toxic to nerve cells. The other protein implicated in Alzheimer's disease, tau protein, also forms such prion-like misfolded oligomers, and there is some evidence that misfolded Aβ can induce tau to misfold.

Product Details
Technical data sheet

Product Details

Verified Reactivity
Antibody Type
Host Species
Phosphate-buffered solution.
The antibody was purified by affinity chromatography.
1 mg/ml
Storage & Handling
The antibody solution should be stored undiluted between 2°C and 8°C. Please note the storage condition for this antibody has been changed from -20°C to between 2°C and 8°C. You can also check your vial or your CoA to find the most accurate storage condition for this antibody.


Recommended Usage

Each lot of this antibody is quality control tested by ELISA assay.

The optimal working dilution should be determined for each specific assay condition.
ELISA: 1:10 (then 10-fold serial dilutions)
IHC: 1:100 - 1:200*

Tissue: Formalin-fixed Paraffin-embedded sections
Pretreatment: 70% Formic Acid
Primary Incubation: 24 hours at 4°C

Application Notes

This antibody is effective in Immunohistochemistry (IHC) and Enzyme-linked Immunosorbent Assay (ELISA).

*Positive control tissue: Human Alzheimer's Brain

This antibody is reactive to the C-terminus of beta amyloid and is specific for the isoform that ends at the 42nd amino acid.

AB_2564764 (BioLegend Cat. No. 812103)

Covered by US patents 5,675,063 and 7,429,487. Sold under license from Epitomics.

Antigen Details

Biology Area
Cell Biology, Neurodegeneration, Neuroscience, Protein Misfolding and Aggregation
Molecular Family
Gene ID
351 View all products for this Gene ID
View information about beta-Amyloid x-42 on

Related FAQs

How many biotin molecules are per antibody structure?
We don't routinely measure the number of biotins with our antibody products but the number of biotin molecules range from 3-6 molecules per antibody.
Go To Top Version: 2    Revision Date: 05/13/2016

For Research Use Only. Not for diagnostic or therapeutic use.


This product is supplied subject to the terms and conditions, including the limited license, located at ("Terms") and may be used only as provided in the Terms. Without limiting the foregoing, BioLegend products may not be used for any Commercial Purpose as defined in the Terms, resold in any form, used in manufacturing, or reverse engineered, sequenced, or otherwise studied or used to learn its design or composition without express written approval of BioLegend. Regardless of the information given in this document, user is solely responsible for determining any license requirements necessary for user’s intended use and assumes all risk and liability arising from use of the product. BioLegend is not responsible for patent infringement or any other risks or liabilities whatsoever resulting from the use of its products.


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This data display is provided for general comparisons between formats.
Your actual data may vary due to variations in samples, target cells, instruments and their settings, staining conditions, and other factors.
If you need assistance with selecting the best format contact our expert technical support team.


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