Choice of Plk1 docking partners during mitosis and cytokinesis is controlled by the activation state of Cdk1.
Neef R, Gruneberg U, Kopajtich R, Li X, Nigg EA, Sillje H, Barr FA, Nat Cell Biol, 2007 Apr - link

Plk1 docking to GRASP65 phosphorylated by Cdk1 suggests a mechanism for Golgi checkpoint signalling.
Preisinger C, Korner R, Wind M, Lehmann WD, Kopajtich R, Barr FA, EMBO J, 2005 Feb 23 - link