p25 has a 5-10 fold longer half-life compared to p35 and lacks the membrane anchoring signal, which results in its constitutive activation and mislocalization of the CDK5:p25 complex to the cytoplasm and the nucleus (Patrick et al. 1999). As CDK5 deregulation triggers nuclear envelope dispersion (Chang et al. 2011), with timing being uncertain, all phosphorylation events catalyzed by the CDK5:p25 complex are shown to occur in the cytosol.
Dikkes, P, Patrick, GN, Nikolic, M, Zukerberg, L, Tsai, LH, de la Monte, S
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