Cell Signaling Technology

Product Pathways - Neuroscience

β-Amyloid (D12B2) Rabbit mAb #9888

Applications Reactivity Sensitivity MW (kDa) Isotype
W IHC-P H M Endogenous 5 Rabbit IgG

Applications Key:  W=Western Blotting  IHC-P=Immunohistochemistry (Paraffin)
Reactivity Key:  H=Human  M=Mouse
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.

Protocols

Specificity / Sensitivity

β-Amyloid (D12B2) Rabbit mAb recognizes endogenous levels of total β-amyloid (Aβ) peptide. The antibody detects several isoforms of Aβ, such as Aβ-37, Aβ-38, Aβ-39, Aβ-40, and Aβ-42. The antigen for this antibody is not 100% conserved in rat. However, the antibody detects mouse Aβ and the mouse and rat sequences surrounding the antigen are 100% identical.

Source / Purification

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

Western Blotting

Western Blotting

Western blot analysis of the indicated amounts of human Aβ-42 (left) and Aβ-40 (right) peptides using β-Amyloid (D12B2) Rabbit mAb.

Western Blotting

Western Blotting

Western blot analysis of human Aβ-37, Aβ-40, and Aβ-42 using β-Amyloid (D12B2) Rabbit mAb.

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded human Alzheimer's brain using β-Amyloid (D12B2) Rabbit mAb.


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 (AD) (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.

Application References

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For Research Use Only. Not For Use In Diagnostic Procedures.

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