Calcium-Calmodulin-Dependent Protein Kinases/chemistry; Cytoskeletal Proteins/chemistry; Membrane Proteins/chemistry; Signal Transduction; Trans-Activators; Alzheimer Disease/metabolism; Amino Acid Motifs; Amino Acid Sequence; Amyloid beta-Peptides/chemistry; Apoptosis; Binding Sites; Blotting, Western; Cell Death; Cell Line; Cell Nucleus/metabolism; Cytoskeletal Proteins/metabolism; Cytoskeletal Proteins/physiology; Cytosol/metabolism; DNA, Complementary/metabolism; Genetic Vectors; Glycogen Synthase Kinase 3; Glycogen Synthase Kinases; Humans; Luciferases/metabolism; Membrane Proteins/genetics; Membrane Proteins/physiology; Microscopy, Fluorescence; Models, Molecular; Molecular Sequence Data; Mutagenesis, Site-Directed; Mutation; Peptide Fragments/chemistry; Phosphorylation; Precipitin Tests; Presenilin-1; Protein Binding; Protein Structure, Tertiary; Sequence Homology, Amino Acid; Serine/chemistry; Transfection; beta Catenin