The National Salvation Front (NSF) has nominated Nasserist figure Hamdeen Sabbahi, Lawyers Syndicate leader Sameh Ashour and Wafd Party boss El-Sayed El-Badawi to enter dialogue with Egypt's new government during the post-Morsi transitional period.
The three are also tasked with opening dialogue channels with the presidency to foster cooperation and understanding.
The NSF is Egypt's main coalition of liberal and leftist groups. One of its key leaders, Mohamed ElBaradei, was appointed vice president for international affairs by interim President Adly Mansour.
Egypt's new Prime Minister Hazem El-Beblawi is putting the finishing touches to a cabinet that he says will be finalised by mid-week.