CDK5, activated by binding to p25, phosphorylates CDC25A protein tyrosine phosphatase at serine residues S40, S116 and S261. CDC25A mainly localizes to the nucleus in neurons and CDK5-mediated phosphorylation does not change its localization. Once activated by CDK5, CDC25A promotes activation of CDK1, CDK2 and CDK4 (Chang et al. 2012).
Chang, KH, Vincent, F, Shah, K
protein serine/threonine kinase activity of CDK5:p25 [nucleoplasm]
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