Overview
Guanine Nucleotide Exchange Factors (GEFs) are essential proteins that facilitate signal transduction in cells. They play a major role in the regulation of cell functions by interacting with small GTPases, a family of proteins that act as molecular switches, controlling the transmission of signals from the outside of the cell to the interior. GEFs catalyze the exchange of guanine nucleotides on GTPases, initiating signal transduction and ultimately resulting in physiological changes. GEFs are involved in pathways that regulate a variety of cellular processes, including cytoskeletal dynamics, cell cycle progression, and apoptosis. As such, they are fundamentally important for the functioning of eukaryotic cells and have been linked to cancer, cardiovascular disease, and other disorders.