GTP-binding proteins

GTP-binding proteins are molecules inside cells that act like switches to control various functions. They can attach to a molecule called GTP (guanine triphosphate), which activates them, allowing them to carry out specific tasks such as cell signaling, movement, or dividing. When they release GTP and bind GDP (guanine diphosphate), they become inactive, turning the process off. These proteins are essential for proper cellular operation, regulating processes by turning signals on and off at the right times. Examples include the Ras and Rab proteins, which are critical for communication within cells and transporting materials.