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29729
APP (E5X2B) Rabbit mAb
Primary Antibodies
Monoclonal Antibody

APP (E5X2B) Rabbit mAb #29729

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  1. IF
Immunofluorescence Image 1: APP (E5X2B) Rabbit mAb

Confocal immunofluorescent analysis of mouse hippocampus from wild-type (left) or the 5XFAD mouse model of Alzheimer's disease (right) using APP (E5X2B) Rabbit mAb (green) and GFAP (GA5) Mouse mAb (Alexa Fluor® 647 Conjugate) #3657 (red). Samples were mounted in ProLong® Gold Antifade Reagent with DAPI #8961 (blue).

Immunofluorescence Image 2: APP (E5X2B) Rabbit mAb

Confocal immunofluorescent analysis of mouse cortex from the 5XFAD mouse model of Alzheimer's disease using APP (E5X2B) Rabbit mAb (green) and GFAP (GA5) Mouse mAb (Alexa Fluor® 647 Conjugate) #3657 (red). Samples were mounted in ProLong® Gold Antifade Reagent with DAPI #8961 (blue).

Immunofluorescence Image 1: APP (E5X2B) Rabbit mAb

Confocal immunofluorescent analysis of A549 cells expressing either a non-targeting shRNA (left, positive) or shAPP (right, negative) using APP (E5X2B) Rabbit mAb (green) and Rab5 (E6N8S) Mouse mAb #46449 (red). Samples were mounted in ProLong® Gold Antifade Reagent with DAPI #8961 (blue).

To Purchase # 29729S
Product # Size Price Inventory
29729S
100 µl

Supporting Data

REACTIVITY H
SENSITIVITY Endogenous
MW (kDa) 9, 100-140
Source/Isotype Rabbit IgG

Application Key:

  • W-Western
  • IP-Immunoprecipitation
  • IHC-Immunohistochemistry
  • ChIP-Chromatin Immunoprecipitation
  • IF-Immunofluorescence
  • F-Flow Cytometry
  • E-P-ELISA-Peptide

Species Cross-Reactivity Key:

  • H-Human
  • M-Mouse
  • R-Rat
  • Hm-Hamster
  • Mk-Monkey
  • Mi-Mink
  • C-Chicken
  • Dm-D. melanogaster
  • X-Xenopus
  • Z-Zebrafish
  • B-Bovine
  • Dg-Dog
  • Pg-Pig
  • Sc-S. cerevisiae
  • Ce-C. elegans
  • Hr-Horse
  • All-All Species Expected

Product Usage Information

Application Dilution
Immunofluorescence (Frozen) 1:100 - 1:200
Immunofluorescence (Immunocytochemistry) 1:100 - 1:200

Storage

Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.

Protocol

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Immunofluorescence (Frozen)

A. Solutions and Reagents

NOTE: Prepare solutions with reverse osmosis deionized (RODI) or equivalent grade water.

  1. 20X Phosphate Buffered Saline (PBS): (9808) To prepare 1L 1X PBS: add 50 ml 20X PBS to 950 ml dH2O, mix. Adjust pH to 8.0.
  2. Formaldehyde: 16%, methanol free, Polysciences, Inc. (cat# 18814), use fresh and store opened vials at 4°C in dark, dilute in 1X PBS for use.
  3. Blocking Buffer: (1X PBS / 5% normal serum / 0.3% Triton™ X-100): To prepare 10 ml, add 0.5 ml normal serum from the same species as the secondary antibody (e.g., Normal Goat Serum (#5425) to 9.5 ml 1X PBS) and mix well. While stirring, add 30 µl Triton™ X-100.
  4. Antibody Dilution Buffer: (1X PBS / 1% BSA / 0.3% Triton™ X-100): To prepare 10 ml, add 30 µl Triton™ X-100 to 10 ml 1X PBS. Mix well then add 0.1 g BSA (#9998), mix.
  5. Recommended Fluorochrome-conjugated Anti-Rabbit secondary antibodies:

    NOTE: When using any primary or fluorochrome-conjugated secondary antibody for the first time, titrate the antibody to determine which dilution allows for the strongest specific signal with the least background for your sample.

  6. Prolong® Gold AntiFade Reagent (#9071), Prolong® Gold AntiFade Reagent with DAPI (#8961).

B. Specimen Preparation - Frozen/Cryostat Sections (IF-F)

  1. For fixed frozen tissue proceed with Immunostaining (Section C).
  2. For fresh, unfixed frozen tissue, please fix immediately, as follows:
    1. Cover sections with 4% formaldehyde dilute in 1X PBS.

      NOTE: Formaldehyde is toxic, use only in fume hood.

    2. Allow sections to fix for 15 minutes at room temperature.
    3. Aspirate liquid, rinse three times in 1X PBS for 5 minutes each.
    4. Proceed with Immunostaining (Section C).

C. Immunostaining

NOTE: All subsequent incubations should be carried out at room temperature unless otherwise noted in a humid light-tight box or covered dish/plate to prevent drying and fluorochrome fading.

  1. Block specimen in Blocking Buffer for 60 min.
  2. While blocking, prepare primary antibody by diluting as indicated on protocol on product webpage in Antibody Dilution Buffer.
  3. Aspirate blocking solution, apply diluted primary antibody.
  4. Incubate overnight at 4°C.
  5. Rinse three times in 1X PBS for 5 min each.
  6. Incubate specimen in fluorochrome-conjugated secondary antibody diluted in Antibody Dilution Buffer for 1–2 hr at room temperature in the dark.
  7. Rinse three times in 1X PBS for 5 min each.
  8. Coverslip slides with Prolong® Gold Antifade Reagent (#9071) or Prolong® Gold Antifade Reagent with DAPI (#8961).
  9. For best results, allow mountant to cure overnight at room temperature. For long-term storage, store slides flat at 4°C protected from light.

posted November 2006

revised July 2016

Protocol Id: 151

Immunofluorescence (Immunocytochemistry)

A. Solutions and Reagents

Achieve higher quality immunofluorescent images using the efficient and cost-effective, pre-made reagents in our #12727 Immunofluorescence Application Solutions Kit

NOTE: Prepare solutions with reverse osmosis deionized (RODI) or equivalent grade water.

  1. 20X Phosphate Buffered Saline (PBS): (9808) To prepare 1L 1X PBS: add 50 ml 20X PBS to 950 ml dH2O, mix. Adjust pH to 8.0.
  2. Formaldehyde: 16%, methanol free, Polysciences, Inc. (cat# 18814), use fresh and store opened vials at 4°C in dark, dilute in 1X PBS for use.
  3. Blocking Buffer (1X PBS / 5% normal serum / 0.3% Triton™ X-100): To prepare 10 ml, add 0.5 ml normal serum from the same species as the secondary antibody (e.g., Normal Goat Serum (#5425)) and 0.5 mL 20X PBS to 9.0 mL dH2O, mix well. While stirring, add 30 µl Triton™ X-100.
  4. Antibody Dilution Buffer (1X PBS / 1% BSA / 0.3% Triton X-100): To prepare 10 ml, add 30 µl Triton™ X-100 to 10 ml 1X PBS. Mix well then add 0.1 g BSA (9998), mix.
  5. Recommended Fluorochrome-conjugated Anti-Rabbit secondary antibodies:

  6. Prolong® Gold AntiFade Reagent (#9071), Prolong® Gold AntiFade Reagent with DAPI (#8961).

B. Specimen Preparation - Cultured Cell Lines (IF-IC)

NOTE: Cells should be grown, treated, fixed and stained directly in multi-well plates, chamber slides or on coverslips.

  1. Aspirate liquid, then cover cells to a depth of 2–3 mm with 4% formaldehyde diluted in 1X PBS.

    NOTE: Formaldehyde is toxic, use only in a fume hood.

  2. Allow cells to fix for 15 min at room temperature.
  3. Aspirate fixative, rinse three times in 1X PBS for 5 min each.
  4. Proceed with Immunostaining (Section C).

C. Immunostaining

NOTE: All subsequent incubations should be carried out at room temperature unless otherwise noted in a humid light-tight box or covered dish/plate to prevent drying and fluorochrome fading.

  1. Block specimen in Blocking Buffer for 60 min.
  2. While blocking, prepare primary antibody by diluting as indicated on product webpage in Antibody Dilution Buffer.
  3. Aspirate blocking solution, apply diluted primary antibody.
  4. Incubate overnight at 4°C.
  5. Rinse three times in 1X PBS for 5 min each.
  6. Incubate specimen in fluorochrome-conjugated secondary antibody diluted in Antibody Dilution Buffer for 1–2 hr at room temperature in the dark.
  7. Rinse three times in 1X PBS for 5 min each.
  8. Coverslip slides with Prolong® Gold Antifade Reagent (#9071) or Prolong® Gold Antifade Reagent with DAPI (#8961).
  9. For best results, allow mountant to cure overnight at room temperature. For long-term storage, store slides flat at 4°C protected from light.

posted November 2006

revised November 2013

Protocol Id: 24

Specificity / Sensitivity

APP (E5X2B) Rabbit mAb recognizes endogenous levels of total APP protein. The antigen sequence of this product is 100% homologous to the corresponding mouse sequence, however no signal was seen in wild type mouse brain, potentially due to sensitivity.

Species Reactivity:

Human

Species predicted to react based on 100% sequence homology:

Mouse

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues near the carboxy terminus of human APP protein.

Background

Amyloid β (Aβ) precursor protein (APP) is a 100-140 kDa transmembrane glycoprotein that exists as several isoforms (1). The amino acid sequence of APP contains the amyloid domain, which can be released by a two-step proteolytic cleavage (1). The extracellular deposition and accumulation of the released Aβ fragments form the main components of amyloid plaques in Alzheimer's disease (1). APP can be phosphorylated at several sites, which may affect the proteolytic processing and secretion of this protein (2-5). Phosphorylation at Thr668 (a position corresponding to the APP695 isoform) by cyclin-dependent kinase is cell-cycle dependent and peaks during G2/M phase (4). APP phosphorylated at Thr668 exists in adult rat brain and correlates with cultured neuronal differentiation (5,6).

  1. Selkoe, D.J. (1996) J Biol Chem 271, 18295-8.
  2. Caporaso, G.L. et al. (1992) Proc Natl Acad Sci USA 89, 3055-9.
  3. Hung, A.Y. and Selkoe, D.J. (1994) EMBO J 13, 534-42.
  4. Suzuki, T. et al. (1994) EMBO J 13, 1114-22.
  5. Ando, K. et al. (1999) J Neurosci 19, 4421-7.
  6. Iijima, K. et al. (2000) J Neurochem 75, 1085-91.

Pathways & Proteins

Explore pathways + proteins related to this product.

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For Research Use Only. Not For Use In Diagnostic Procedures.
Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
Alexa Fluor is a registered trademark of Life Technologies Corporation.
ProLong is a registered trademark of Life Technologies Corporation.