put the steps of this transport pump in order na-k pump question 18 options: potassium triggers dephosphorylation of the pump which stabilizes the e1 confirmation. 2 potassium bind the e1 confirmation is open to the inside of the cell and has a high affinity for sodium 2 potassium ions are released inside the cell 3 sodium ions bind the e2 confirmation is open to the outside of the cell and has a high affinity for potassium. 3 sodium ions are released outside the cell. sodium triggers phosphorylation of the pump which stabilizes the e2 confirmation.