a protein kinase of the STE20 family that regulates synapse formation and plasticity in the hippocampus. May be necessary for dendritic development and for the rapid cytoskeletal reorganization in dendritic spines associated with synaptic plasticity. Forms an activated complex with GTP-bound P21, CDC2 and RAC1 proteins. Missense and truncation mutations linked to nonsyndromic mental retardation type 30 (MRX30). Two alternatively spliced human isoforms have been reported. Note: This description may include information from UniProtKB.
Protein type: Protein kinase, Ser/Thr (non-receptor); Protein kinase, STE; EC 184.108.40.206; Kinase, protein; STE group; STE20 family; PAKA subfamily
Chromosomal Location of Human Ortholog: Xq23
Cellular Component: cytoplasm
Molecular Function: MAP kinase kinase activity; protein serine/threonine kinase activity; protein binding; Rho GTPase binding; metal ion binding; SH3 domain binding; ATP binding
Biological Process: regulation of actin filament polymerization; axonogenesis; activation of MAPK activity; MAPKKK cascade; synapse organization and biogenesis; dendrite development; protein amino acid phosphorylation
SS: 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.