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. 2009 Apr 2;3:27–44. doi: 10.2174/1874205X00903010027

Fig. (5).

Fig. (5)

Transmembrane amyloid precursor protein (APP). In normal conditions, α- and γ-secretase act on it, thus producing the non-toxic fragments sAPP-α and P3. In AD β- and γ-secretase take part, releasing a less soluble fragment (βA) that is subsequently polymerized and forms insoluble deposits. This phenomenon is decisive for the disease’s pathogeny.