Enables Toll-like receptor 2 binding activity; identical protein binding activity; and phosphatidylinositol-4,5-bisphosphate binding activity. Involved in several processes, including positive regulation of B cell proliferation; positive regulation of NF-kappaB transcription factor activity; and regulation of cytokine production. Acts upstream of or within several processes, including I-kappaB kinase/NF-kappaB signaling; myeloid cell differentiation; and response to bacterium. Located in endocytic vesicle and ruffle membrane. Is expressed in testis. Human ortholog(s) of this gene implicated in malaria and tuberculosis. Orthologous to human TIRAP (TIR domain containing adaptor protein). [provided by Alliance of Genome Resources, Apr 2022]