Anti-Angiotensin II Type 1 Receptor (AT1)

Angiotensin II interacts with two types of G-protein coupled membrane receptors, AT1 (type 1) and AT2 (type 2). Major cardiovascular effects appear to be mediated through AT1. AT1 has three isoforms (rat AT1A 359aa, AT1B/AT III, 359aa, and AT1C, 177aa). Rat AT1 receptors are predicted to contain seven transmembrane domains. The N-terminus is predicted to be extracellular. The C-terminus is inside the membrane (cytoplasmic). The binding of angiotensin II with AT1 receptors activate a phosphatidylinositol-calcium second messenger system. AT1 receptors are expressed in the liver, kidney, aorta, lung, uterus, ovary, spleen, heart, adrenal and vascular smooth muscle. AT2 gene ( chromosome x) encodes 363 aa protein. It is highly expressed in myometrium with lower levels in adrenal and fallopian tube. It is also expressed at high levels in fetal kidney and intestine. Rat AT1 receptors are predicted to contain seven transmembrane domains. The N-terminus is predicted to be extracellular, while C-terminus inside the membrane (cytoplasmic). The binding of angiotensin II with AT1 receptors activate a phosphatidylinositol-calcium second messenger system. AT1 receptors are expressed in the liver, kidney, aorta, lung, uterus, ovary, spleen, heart, adrenal and vascular smooth muscle. AT2 gene (chromosome x) encodes 363aa protein. It is expressed at high levels in myometrium, fetal kidney and intestine. It is expressed at lower levels in adrenal and fallopian tube. Applications: Suitable for use in ELISA. Western Blot, though not tested, may potentially be used as an application. Other applications not tested. Recommended Dilution: Western Blot: 1:1000-1:5000 (ECL). Detected ~45kD band., ELISA: 1:10,000-1:100,000 using 50-100ng of A2295-07G Control peptide/well., Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.