Describe the signal transduction pathway for Two or Three of the following: a) ß-adrenergic (epinephrine) receptor b) Histamine receptor (hint: this is a Ga type receptor) c) Growth hormone receptor

Which of the following is not a true statement? A.) steroid and thyroid hormone signaling would be impaired if the plasma level of carrier proteins is not optimal. B.) Steroid and thyroid hormone-receptor complexes form dimers when they bind to the hormone-response elements on DNA C.) Epinephrine uses the adenylate cyclase and the phospholipase C second messenger systems D.) signaling by a peptide hormone would be impaired if a second messenger system is not functional in the target cell E.) signaling by a steroid hormone would be hindered if the adenylated cyclase second messenger system is not functional in the target cell.

The one i have to use to answer these questions are Prolactin please :)

Why might the GluR-B mutation prevent calcium from moving through the receptor?

Briefly explain the difference between a receptor antagonist and a receptor inverse agonist. Describe both the resulting receptor conformation as well as the signal transduction.

With protein kinase-mediated molecular switches, downstream target molecules are typically activated by ... a) being phosphorylated b) binding to ATP c) the action of a phosphataase d) hydrolysis of GTP e) binding to GTP

What do the cytoplasmic domain of a G protein-coupled receptor and the adaptor protein in the RTK pathway have in common?

Beta-blockers are used to treat cardiovascular disorders because they are antagonists at beta-adrenergic receptors. Within the cell this activity will be seen as? OA) Increased signaling via the G₁ protein B) Increased protein kinase A activity Decreased phospholipase C activity D) Decreased cAMP levels E) Increased inositol 1,4,5-trisphosphate levels

Why are the catecholamines listed for a variety of receptor pathways?

Describe the process and results of receptor-ligand binding.