Receptor for thromboxane A2 (TXA2), a potent stimulator of platelet aggregation. The activity of this receptor is mediated by a G-protein that activates a phosphatidylinositol-calcium second messenger system. In the kidney, the binding of TXA2 to glomerular TP receptors causes intense vasoconstriction. Activates phospholipase C and adenylyl cyclase (By similarity). Interacts with RPGRIP1L. Interacts with RACK1; the interaction regulates TBXA2R cell surface expression (By similarity). Belongs to the G-protein coupled receptor 1 family.