a protein kinase of the STE20 family that regulates cell motility and morphology. Critical RhoGTPase effector that regulates cytoskeleton reorganization, the JNK MAPK pathway, and nuclear signaling. Binding of Rac/cdc42 to the PBD of PAK1 causes autophosphorylation and conformational change. Phosphorylated and activated by PDK. Note: This description may include information from UniProtKB.
Protein type: Protein kinase, STE; Kinase, protein; EC 188.8.131.52; Protein kinase, Ser/Thr (non-receptor); STE group; STE20 family; PAKA subfamily
Molecular Function: collagen binding; protein serine/threonine kinase activity; protein binding; protein kinase binding; ATP binding; protein kinase activity; receptor signaling protein serine/threonine kinase activity
Biological Process: positive regulation of JNK activity; axon guidance; exocytosis; wound healing; apoptosis; protein amino acid autophosphorylation; positive regulation of estrogen receptor signaling pathway; protein amino acid phosphorylation; receptor clustering; T cell receptor signaling pathway; positive regulation of stress fiber formation; ephrin receptor signaling pathway; dendrite development; neuromuscular junction development; MAPKKK cascade; positive regulation of peptidyl-serine phosphorylation; branching morphogenesis of a tube; cellular response to insulin stimulus; actin cytoskeleton reorganization; T cell costimulation; response to hypoxia; innate immune response; positive regulation of protein amino acid phosphorylation; mitotic cell cycle; vascular endothelial growth factor receptor signaling pathway; neurite morphogenesis
LTP: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.