GTPase

This term is a specialized biochemical designation used almost exclusively in molecular biology and biochemistry. It describes a specific class of enzymes that act as molecular switches, cycling between an active GTP-bound state and an inactive GDP-bound state to control cellular signaling.

In technical literature, the term is frequently paired with specific protein families, such as the Ras superfamily. Because it describes a specific chemical function (the hydrolysis of GTP), it is used in a precise, clinical, or academic register and is never found in casual conversation.