"Enzyme"^^ . "Regulatory proteins that act as molecular switches. They control a wide range of biological processes including: receptor signaling, intracellular signal transduction pathways, and protein synthesis. Their activity is regulated by factors that control their ability to bind to and hydrolyze GTP to GDP. EC 3.6.1.-.MSH2001" . "C0086376"^^ . "Biologically Active Substance"^^ . "G Proteins are a family of small membrane-bound regulatory proteins that act as GTP/GDP-binding molecular switches controlling a wide range of biological processes including: transmembrane receptor signaling, intracellular signal transduction pathways, and protein synthesis. Their activity is regulated by factors that control their ability to bind to and hydrolyze GTP to GDP.NCI" . . . "C17458"^^ . "Guanine Nucleotide Binding ProteinSYNCI" . "G ProteinPTNCI" . "G Protein"^^ . "G Protein"^^ . "GTP-Binding ProteinSYNCI" . . "Amino Acid, Peptide, or Protein"^^ . "G_Protein"^^ . .