Posttranslational modifications of α-tubulin in alzheimer disease
2015
Background
In Alzheimer disease (AD), hyperphosphorylation of tau proteins results in microtubule destabilization and cytoskeletal abnormalities. Our prior ultra-morphometric studies documented a clear reduction in microtubules in pyramidal neurons in AD compared to controls, however, this reduction did not coincide with the presence of paired helical filaments. The latter suggests the presence of compensatory mechanism(s) that stabilize microtubule dynamics despite the loss of tau binding and stabilization. Microtubules are composed of tubulin dimers which are subject to posttranslational modifications that affect the stability and function of microtubules.
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