Leukotriene B4 receptor 1 (LTB4R)

Receptor for extracellular ATP > UTP and ADP.

The activity of this receptor is mediated by G proteins that activate a phosphatidylinositol-calcium second messenger system.

May be the cardiac P2Y receptor involved in the regulation of cardiac muscle contraction through modulation of L-type calcium currents. Is a receptor for leukotriene B4, a potent chemoattractant involved in inflammation and immune reaction.