Bradykinin increases vascular permeability, dilates blood vessels, contracts non-vascular smooth muscle, and causes pain. This product detects a receptor for bradykinin. The receptor is associated with G proteins that activate a phosphatidylinositol-calcium second messenger system.

Bradykinin B2 receptor expression has been reported in blood, brain, eye, kidney, liver, lung,prostate, skin, small intestine, synovium, uterus, and vessel. ESTs have been isolated from colon, connective tissue, heart, heart/melanocyte/uterus, kidney, lung, placenta, and thyroid libraries.