PAK5（p21 (RAC1) activated kinase 5），癌症关联基因，基因ID：57144，这个基因编码的蛋白质是ser/thr蛋白激酶pak家族的成员。pak家族成员是rac/cdc42gtpase的效应者，参与调控细胞骨架动力学、增殖和细胞存活信号。该激酶包含一个cdc42/rac1相互作用结合（crib）基序，并且在gtp存在下已被证明与cdc42结合。这种激酶主要在大脑中表达。它能促进轴突的生长，从而在轴突的发育中发挥作用。这种激酶与微管网络有关，并诱导微管稳定。这种激酶的亚细胞定位在细胞周期进程中受到严格的调控。已经描述了编码相同蛋白质的选择性剪接转录变体。[由RefSeq提供，2008年7月]The protein encoded by this gene is a member of the PAK family of Ser/Thr protein kinases. PAK family members are known to be effectors of Rac/Cdc42 GTPases， which have been implicated in the regulation of cytoskeletal dynamics， proliferation， and cell survival signaling. This kinase contains a CDC42/Rac1 interactive binding (CRIB) motif， and has been shown to bind CDC42 in the presence of GTP. This kinase is predominantly expressed in brain. It is capable of promoting neurite outgrowth， and thus may play a role in neurite development. This kinase is associated with microtubule networks and induces microtubule stabilization. Th。