The K protein domain that recruits the interleukin 1-responsive K protein kinase lies adjacent to a cluster of c-Src and Vav SH3-binding sites. Implications that K protein acts as a docking platform.
Van Seuningen I, Ostrowski J, Bustelo XR, Sleath PR, Bomsztyk K, J Biol Chem, 1995 Nov 10 - link