The MDM2 ubiquitination signal in the DNA-binding domain of p53 forms a docking site for calcium calmodulin kinase superfamily members.
Craig AL, Chrystal JA, Fraser JA, Sphyris N, Lin Y, Harrison BJ, Scott MT, Dornreiter I, Hupp TR, Mol Cell Biol, 2007 May - link

The development of a CDK2-docking site peptide that inhibits p53 and sensitizes cells to death.
Ferguson M, Luciani MG, Finlan L, Rankin EM, Ibbotson S, Fersht A, Hupp TR, Cell Cycle, 2004 Jan - link

The C-terminal regulatory domain of p53 contains a functional docking site for cyclin A.
Luciani MG, Hutchins JR, Zheleva D, Hupp TR, J Mol Biol, 2000 Jul 14 - link