References
The association between the active GTP-bound form of CDC42 and the PBD domain of PAK1,2,3,4 promotes PAK1,2,3,4 autophosphorylation
PMID:16204230
PMID:9744077
PMID:10461188
PMID:11950587
All 4 kinases PAK1,2,3,4 are capable of promoting JNK signaling activation that leads to cytoskeletal rearrangement and cell motility.