摘要: Neurofilament proteins and the neuron-specific microtubule-associated protein tau are phosphorylated in vivo at sites conforming to phosphorylation consensus motif of cell-cycle-control kinase, p34cdc2-cyclin. Abnormalities these associated with neurodegenerative disorders, such as amylotrophic lateral sclerosis Alzheimer's disease. A cdc2-like kinase composed cyclin-dependent 5 (cdk5) a brain-specific regulatory subunit is proposed be responsible for neuronal proteins.