G_{β 5} (N-20) Anticuerpo: sc-25025

G_{β 5} Background Information
Heterotrimeric G proteins function to relay information from cell surface receptors to intracellular effectors. Each of a very broad range of receptors specifically detects an extracellular stimulus (i.e. a photon, pheromone, odorant, hormone or neurotransmitter), while the effectors (e.g. adenyl cyclase), which act to generate one or more intracellular messengers, are less numerous. In mammals, G protein å, ∫ and © polypeptides are encoded by at least 16, 4 and 7 genes, respectively. Most interest in G proteins has been focused on their å subunits, since these proteins bind and hydrolyze GTP and most obviously regulate the activity of the best studied effectors. Evidence, however, has established an important regulatory role for the ∫© subunits. The G protein ∫ subunits are important regulators of G protein å subunits as well as of certain signal transduction receptors and effectors. In mammals, there are five different members of the ∫ subunit family. Both a long and a short form have been described for G∫ 5, which is also known as transducin ∫5.