The protein, which has a greater tendency to allow potassium to flow into a cell rather than out of a cell, is controlled by G-proteins and is found associated with the sulfonylurea receptor (SUR) to constitute the ATP-sensitive K+ channel.
The protein promotes potassium entry into cells more than its exit, being regulated by G-proteins and associated with the sulfonylurea receptor (SUR), which together make up the ATP-sensitive K+ channel.