Rac2 - Rac family small GTPase 2

Enables GTPase activity and protein kinase regulator activity. Involved in positive regulation of lamellipodium assembly; regulation of leukocyte activation; and regulation of leukocyte chemotaxis. Acts upstream of or within several processes, including G protein-coupled receptor signaling pathway; actin cytoskeleton organization; and cell projection assembly. Located in cytoplasm; membrane; and nuclear envelope. Is expressed in heart. Used to study immunodeficiency 73b with defective neutrophil chemotaxis and lymphopenia. Human ortholog(s) of this gene implicated in immunodeficiency 73a with defective neutrophil chemotaxis and leukocytosis; immunodeficiency 73b with defective neutrophil chemotaxis and lymphopenia; and immunodeficiency 73c with defective neutrophil chemotaxis and hypogammaglobulinemia. Orthologous to human RAC2 (Rac family small GTPase 2). [provided by Alliance of Genome Resources, Apr 2022]