Ras GTPases

Ras GTPases are proteins that act like molecular switches within cells, helping to control important processes such as cell growth, division, and movement. They alternate between an active state when bound to a molecule called GTP and an inactive state when bound to GDP. When active, Ras proteins send signals that can lead to cell proliferation or other responses. Proper regulation of Ras activity is essential for normal cell function, and mutations that keep Ras in an active state are often linked to cancer development. They are key players in cell signaling pathways, ensuring cells respond appropriately to their environment.