GPR30, also known as G-protein coupled estrogen receptor 1, Chemoattractant receptor-like 2, Flow-induced endothelial G-protein coupled receptor 1 (FEG-1), G-protein coupled receptor 30, GPCR-BR, IL8-related receptor DRY12, Lymphocyte-derived G-protein coupled receptor (LYGPR), or Membrane estrogen receptor (mER), and encoded by the gene GPER/CEPR/CMKRL2/DRY12/GPR30,is the common receptor for estrogen. GPR30 binds estrogen, resulting in intracellular calcium mobilization and synthesis of phosphatidylinositol (3,4,5)-trisphosphate in the nucleus, and therefore GPR30 is part of the rapid non-genomic signaling events widely observed when cells interact with estrogen. GPR30 is a cell membrane bound protein found in the Golgi apparatus, endoplasmic reticulum and plasma membrane. GPR30 is ubiquitously expressed, but is most abundant in placenta. In brain regions, GPR30 is expressed as a 2.8 kb transcript in basal forebrain, frontal cortex, thalamus, hippocampus, caudate and putamen.