Sec7 domain

The Sec7 domain is a specialized part of certain proteins that helps transfer materials within a cell. It acts as a molecular switch, activating other proteins called Arf GTPases by promoting the exchange of GDP for GTP. This activation is crucial for processes like forming vesicles, which transport materials between different parts of the cell. Essentially, the Sec7 domain enables cells to organize internal traffic efficiently, maintaining proper function and communication within the cell's complex system.