Anti-APP Antibody, APP 643-695 CT fragment, clone 2.F2.19B4

ascites fluid, clone 2.F2.19B4, Chemicon®

APP, Jonas clone

Quality Level

biological source


antibody form

ascites fluid


2.F2.19B4, monoclonal

species reactivity

human, rat




immunohistochemistry: suitable (paraffin)
western blot: suitable



UniProt accession no.

shipped in

dry ice

Gene Information

human ... APP(351)


Reacts with intact full-length Alzheimer precursor protein (APP) and selectively with the cytoplasmic carboxyl fragment of APP 643-695. Epitope has reportedly been mapped in this paper


Epitope: APP 643-695 C-terminal fragment
Carboxyl fragment of APP 643-695 / Jonas.


Research Category
This Anti-APP Antibody, APP 643-695 C-terminal fragment, clone 2.F2.19B4 is validated for use in IH(P), WB for the detection of Alzheimer Precursor Protein.
Immunohistochemistry on paraffin sections: 10-20 μg/mL * See protocol below.

Western blot: 10 μg/mL

Optimal working dilutions must be determined by end user.



1) Prepare paraformaldehyde-fixed paraffin sections. Wash twice for 5 min in xylene to deparaffinize. Wash sections for 5 min in a descending series of alcohol solutions (100%, 96%, 90%, 80%, 70%, 50%, 30%).

2) Wash sections 3 times in distilled water.

3) Wash in TBS (50 mM Tris-HCl, 150 mM NaCl, pH 7.6). To block endogenous peroxidase wash with methanol containing 0.6% H2O2 (v/v) and 10 % horse serum (v/v) for 5 min at room temperature.

4) Wash sections for 5 min in TBS.

5) Incubate sections with MAB343 (diluted in TBS containing 10% horse serum (v/v)) overnight at +4°C or for 2 hours at 37°C in a humid chamber.

6) Wash sections 3 times in TBS for 5 min..

7) Detect with standard secondary antibody detection system (PAP, ABC, etc.).

8) Wash sections in TBS.

9) Embed sections and examine.
Research Sub Category
Neurodegenerative Diseases

Physical form


Storage and Stability

Maintain lyophilized material at +2–8°C for up to 12 months. After reconstitution maintain frozen at -20°C in undiluted aliquots for up to 6 months. Avoid repeated freeze/thaw cycles.

Analysis Note


Other Notes

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

Legal Information

CHEMICON is a registered trademark of Merck KGaA, Darmstadt, Germany


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.


10 - Combustible liquids

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Eun Mi Hwang et al.
Bioorganic & medicinal chemistry, 16(14), 6669-6674 (2008-06-21)
In order to access beta-secretase (BACE1), and enzyme strongly implicated in the cause of Alzheimer's disease, inhibitors must possess sufficient lipophilicity to traverse two lipid bilayers. Current drug candidates, which are almost totally peptide-derived, are thus inefficient because cell permeability...
Gregory D Van Vickle et al.
Biochemistry, 46(36), 10317-10327 (2007-08-21)
We investigated the morphology and biochemistry of the amyloid-beta (Abeta) peptides produced in TgCRND8 Tg mice carrying combined amyloid precursor protein (APP) Swedish (K670M/N671L) and Indiana (V717F) mutations. Histological analyses employing amyloid-specific staining and electron microscopy revealed that the TgCRND8...
Effects of peptides derived from BACE1 catalytic domain on APP processing.
Seung Woo Yeon, Yong-Jin Jeon, Eun Mi Hwang, Tae-Yong Kim
Peptides null
N Kitaguchi et al.
Nature, 331(6156), 530-532 (1988-02-11)
Alzheimer's disease is characterized by cerebral deposits of amyloid beta-protein (AP) as senile plaque core and vascular amyloid, and a complementary DNA encoding a precursor of this protein (APP) has been cloned from human brain. From a cDNA library of...
Evidence for a nonsecretory, acidic degradation pathway for amyloid precursor protein in 293 cells. Identification of a novel, 22-kDa, beta-peptide-containing intermediate.
Knops, J, et al.
The Journal of Biological Chemistry, 267, 16022-16024 (1992)

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