Protein/Peptide Hormones and Regulators

Protein/peptide hormones are typically generated as pro-hormones that are secreted into the circulatory system following specific stimuli, and exert their effects in an endocrine manner. These hormones generally act through receptors on the plasma membrane which activate second messenger protein cascades and impact a myriad of biological processes. R&D Systems offers a wide range of related products which are involved in glucose homeostasis (glucagon, insulin), the growth hormone (GH)/insulin-like growth factor (IGF) pathway, erythropoiesis (erythropoietin), vasoconstriction (endothelin), pain signaling (substance P), reproduction (follicle stimulating hormone (FSH, relaxin, prolactin), and more.