Enables integrin binding activity and protein kinase C binding activity. Involved in several processes, including integrin-mediated signaling pathway; positive regulation of T cell migration; and positive regulation of osteoblast proliferation. Acts upstream of or within several processes, including blood coagulation; positive regulation of cell-substrate adhesion; and regulation of cell migration. Located in several cellular components, including apical plasma membrane; external side of plasma membrane; and focal adhesion. Part of alpha9-beta1 integrin-ADAM8 complex and alphav-beta3 integrin-PKCalpha complex. Is active in glutamatergic synapse and synaptic membrane. Is expressed in several structures, including bone; brain; early conceptus; genitourinary system; and gut. Used to study Glanzmann's thrombasthenia and platelet-type bleeding disorder 16. Human ortholog(s) of this gene implicated in several diseases, including autoimmune thrombocytopenic purpura; blood platelet disease (multiple); end stage renal disease; myocardial infarction; and non-arteritic anterior ischemic optic neuropathy. Orthologous to human ITGB3 (integrin subunit beta 3).