Abstract
The majority of familial Alzheimer’s disease (AD) cases are linked to mutations of the presenilin 1 and 2 (PS1, PS2) genes on chromosomes 14 and 1, respectively (1-3). PS1 and PS2 are about 67% identical in amino acid sequence. Based on hydrophobicity analysis, the presenilins are predicted to have multiple transmembrane domains. Structural analysis (see Chapter 19}) suggest that presenilins are 6-8 transmembrane proteins which are located in the endoplasmic reticulum (ER) and Golgi. The N- and C-termini and the large hydrophilic loop region are oriented to the cytoplasm (4,5). More than 40 AD-causing mutations have been identified in PS1, whereas only two mutations have been identified in PS2. The disease-causing mutations span most domains of the protein, with clusters of mutations in the second transmembrane domain and the large hydrophilic loop region Fig. 1).
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Hartmann, H., Yankner, B.A. (2000). Normal Proteolytic Processing of the Presenilins. In: Hooper, N.M. (eds) Alzheimer's Disease. Methods in Molecular Medicine™, vol 32. Humana Press. https://doi.org/10.1385/1-59259-195-7:297
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DOI: https://doi.org/10.1385/1-59259-195-7:297
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