Interacting JNK-docking sites in MKK7 promote binding and activation of JNK mitogen-activated protein kinases.
Ho DT, Bardwell AJ, Grewal S, Iverson C, Bardwell L, J Biol Chem, 2006 May 12 - link

A docking site in MKK4 mediates high affinity binding to JNK MAPKs and competes with similar docking sites in JNK substrates.
Ho DT, Bardwell AJ, Abdollahi M, Bardwell L, J Biol Chem, 2003 Aug 29 - link